[{"doi":"10.1063/5.0219300","main_file_link":[{"open_access":"1","url":" https://doi.org/10.1063/5.0219300"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2025-04-02T16:14:31Z","article_type":"original","intvolume":"       136","year":"2024","title":"Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals","publication_identifier":{"issn":["0021-8979","1089-7550"]},"author":[{"full_name":"Ratzenberger, Julius","first_name":"Julius","last_name":"Ratzenberger"},{"full_name":"Kiseleva, Iuliia","last_name":"Kiseleva","first_name":"Iuliia"},{"full_name":"Koppitz, Boris","last_name":"Koppitz","first_name":"Boris"},{"first_name":"Elke","last_name":"Beyreuther","full_name":"Beyreuther, Elke"},{"first_name":"Manuel","last_name":"Zahn","full_name":"Zahn, Manuel"},{"full_name":"Gössel, Joshua","first_name":"Joshua","last_name":"Gössel"},{"first_name":"Peter A.","last_name":"Hegarty","full_name":"Hegarty, Peter A."},{"full_name":"Amber, Zeeshan H.","first_name":"Zeeshan H.","last_name":"Amber"},{"full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","first_name":"Michael","last_name":"Rüsing","id":"22501"},{"last_name":"Eng","first_name":"Lukas M.","full_name":"Eng, Lukas M."}],"type":"journal_article","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"date_created":"2025-04-02T16:12:29Z","abstract":[{"text":"Ferroelectric domain walls (DWs) are promising structures for assembling future nano-electronic circuit elements on a larger scale since reporting domain wall currents of up to 1 mA per single DW. One key requirement hereto is their reproducible manufacturing by gaining preparative control over domain size and domain wall conductivity (DWC). To date, most works on DWC have focused on exploring the fundamental electrical properties of individual DWs within single-shot experiments, with an emphasis on quantifying the origins of DWC. Very few reports exist when it comes to comparing the DWC properties between two separate DWs, and literally nothing exists where issues of reproducibility in DWC devices have been addressed. To fill this gap while facing the challenge of finding guidelines for achieving predictable DWC performance, we report on a procedure that allows us to reproducibly prepare single hexagonal domains of a predefined diameter into uniaxial ferroelectric lithium niobate single crystals of 200 and 300 μm thickness, respectively. We show that the domain diameter can be controlled with an uncertainty of a few percent. As-grown DWs are then subjected to a standard procedure of current-limited high-voltage DWC enhancement, and they repetitively reach a DWC increase of six orders of magnitude. While all resulting DWs show significantly enhanced DWC values, their individual current–voltage (I–V) characteristics exhibit different shapes, which can be explained by variations in their 3D real structure reflecting local heterogeneities by defects, DW pinning, and surface-near DW inclination.","lang":"eng"}],"issue":"10","publication":"Journal of Applied Physics","user_id":"22501","volume":136,"page":"104302","_id":"59273","publisher":"AIP Publishing","status":"public","oa":"1","quality_controlled":"1","citation":{"chicago":"Ratzenberger, Julius, Iuliia Kiseleva, Boris Koppitz, Elke Beyreuther, Manuel Zahn, Joshua Gössel, Peter A. Hegarty, Zeeshan H. Amber, Michael Rüsing, and Lukas M. Eng. “Toward the Reproducible Fabrication of Conductive Ferroelectric Domain Walls into Lithium Niobate Bulk Single Crystals.” <i>Journal of Applied Physics</i> 136, no. 10 (2024): 104302. <a href=\"https://doi.org/10.1063/5.0219300\">https://doi.org/10.1063/5.0219300</a>.","short":"J. Ratzenberger, I. Kiseleva, B. Koppitz, E. Beyreuther, M. Zahn, J. Gössel, P.A. Hegarty, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied Physics 136 (2024) 104302.","apa":"Ratzenberger, J., Kiseleva, I., Koppitz, B., Beyreuther, E., Zahn, M., Gössel, J., Hegarty, P. A., Amber, Z. H., Rüsing, M., &#38; Eng, L. M. (2024). Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals. <i>Journal of Applied Physics</i>, <i>136</i>(10), 104302. <a href=\"https://doi.org/10.1063/5.0219300\">https://doi.org/10.1063/5.0219300</a>","ieee":"J. Ratzenberger <i>et al.</i>, “Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals,” <i>Journal of Applied Physics</i>, vol. 136, no. 10, p. 104302, 2024, doi: <a href=\"https://doi.org/10.1063/5.0219300\">10.1063/5.0219300</a>.","ama":"Ratzenberger J, Kiseleva I, Koppitz B, et al. Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals. <i>Journal of Applied Physics</i>. 2024;136(10):104302. doi:<a href=\"https://doi.org/10.1063/5.0219300\">10.1063/5.0219300</a>","bibtex":"@article{Ratzenberger_Kiseleva_Koppitz_Beyreuther_Zahn_Gössel_Hegarty_Amber_Rüsing_Eng_2024, title={Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals}, volume={136}, DOI={<a href=\"https://doi.org/10.1063/5.0219300\">10.1063/5.0219300</a>}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Ratzenberger, Julius and Kiseleva, Iuliia and Koppitz, Boris and Beyreuther, Elke and Zahn, Manuel and Gössel, Joshua and Hegarty, Peter A. and Amber, Zeeshan H. and Rüsing, Michael and Eng, Lukas M.}, year={2024}, pages={104302} }","mla":"Ratzenberger, Julius, et al. “Toward the Reproducible Fabrication of Conductive Ferroelectric Domain Walls into Lithium Niobate Bulk Single Crystals.” <i>Journal of Applied Physics</i>, vol. 136, no. 10, AIP Publishing, 2024, p. 104302, doi:<a href=\"https://doi.org/10.1063/5.0219300\">10.1063/5.0219300</a>."}},{"citation":{"mla":"Lee, Cherrie S. J., et al. “Impact of Ion Exchange on Vibrational Modes in Rb-Doped KTiOPO4: A Raman Spectroscopy Study on the Interplay between Ion Exchange and Polarization Switching.” <i>Physical Review B</i>, vol. 110, no. 21, 214115, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevb.110.214115\">10.1103/physrevb.110.214115</a>.","bibtex":"@article{Lee_Canalias_Buschbeck_Koppitz_Hempel_Amber_Eng_Rüsing_2024, title={Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching}, volume={110}, DOI={<a href=\"https://doi.org/10.1103/physrevb.110.214115\">10.1103/physrevb.110.214115</a>}, number={21214115}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Lee, Cherrie S. J. and Canalias, Carlota and Buschbeck, Robin and Koppitz, Boris and Hempel, Franz and Amber, Zeeshan and Eng, Lukas M. and Rüsing, Michael}, year={2024} }","ama":"Lee CSJ, Canalias C, Buschbeck R, et al. Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching. <i>Physical Review B</i>. 2024;110(21). doi:<a href=\"https://doi.org/10.1103/physrevb.110.214115\">10.1103/physrevb.110.214115</a>","ieee":"C. S. J. Lee <i>et al.</i>, “Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching,” <i>Physical Review B</i>, vol. 110, no. 21, Art. no. 214115, 2024, doi: <a href=\"https://doi.org/10.1103/physrevb.110.214115\">10.1103/physrevb.110.214115</a>.","apa":"Lee, C. S. J., Canalias, C., Buschbeck, R., Koppitz, B., Hempel, F., Amber, Z., Eng, L. M., &#38; Rüsing, M. (2024). Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching. <i>Physical Review B</i>, <i>110</i>(21), Article 214115. <a href=\"https://doi.org/10.1103/physrevb.110.214115\">https://doi.org/10.1103/physrevb.110.214115</a>","short":"C.S.J. Lee, C. Canalias, R. Buschbeck, B. Koppitz, F. Hempel, Z. Amber, L.M. Eng, M. Rüsing, Physical Review B 110 (2024).","chicago":"Lee, Cherrie S. J., Carlota Canalias, Robin Buschbeck, Boris Koppitz, Franz Hempel, Zeeshan Amber, Lukas M. Eng, and Michael Rüsing. “Impact of Ion Exchange on Vibrational Modes in Rb-Doped KTiOPO4: A Raman Spectroscopy Study on the Interplay between Ion Exchange and Polarization Switching.” <i>Physical Review B</i> 110, no. 21 (2024). <a href=\"https://doi.org/10.1103/physrevb.110.214115\">https://doi.org/10.1103/physrevb.110.214115</a>."},"volume":110,"user_id":"22501","publisher":"American Physical Society (APS)","_id":"59274","status":"public","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"type":"journal_article","date_created":"2025-04-02T16:14:44Z","abstract":[{"text":"Recently, ion exchange (IE) has been used to periodically modify the coercive field (Ec) of the crystal prior to periodic poling, to fabricate fine-pitch domain structures in Rb-doped KTiOPO4 (RKTP). Here, we use micro-Raman spectroscopy to understand the impact of IE on the vibrational modes related to the Rb/K lattice sites, TiO octahedra, and PO4 tetrahedra, which all form the basis of the RKTP crystal structure. We analyze the Raman spectra of three different RKTP samples: (1) a RKTP sample that shows a poled domain grating only, (2) a RKTP sample that has an Ec grating only, and (3) a RKTP sample that has both an Ec and a domain grating of the nominally same spacing. This allows us to determine the impact of IE on the vibrational modes of RKTP. We characterize the changes in the lower Raman peaks related to the alkali-metal ions, as well as observe lattice modifications induced by the incorporation of Rb+ that extend further into the crystal bulk than the expected IE depth. Moreover, the influence of IE on the domain walls is also manifested in their Raman peak shift. We discuss our results in terms of the deformation of the PO4and TiO groups. Our results highlight the intricate impact of IE on the crystal structure and how it facilitates periodic poling, paving the way for further development of the Ec-engineering technique.","lang":"eng"}],"issue":"21","publication":"Physical Review B","doi":"10.1103/physrevb.110.214115","language":[{"iso":"eng"}],"article_number":"214115","article_type":"original","intvolume":"       110","publication_status":"published","date_updated":"2025-04-02T16:18:34Z","author":[{"full_name":"Lee, Cherrie S. J.","last_name":"Lee","first_name":"Cherrie S. J."},{"first_name":"Carlota","last_name":"Canalias","full_name":"Canalias, Carlota"},{"full_name":"Buschbeck, Robin","first_name":"Robin","last_name":"Buschbeck"},{"full_name":"Koppitz, Boris","last_name":"Koppitz","first_name":"Boris"},{"first_name":"Franz","last_name":"Hempel","full_name":"Hempel, Franz"},{"first_name":"Zeeshan","last_name":"Amber","full_name":"Amber, Zeeshan"},{"full_name":"Eng, Lukas M.","first_name":"Lukas M.","last_name":"Eng"},{"first_name":"Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","full_name":"Rüsing, Michael","id":"22501"}],"publication_identifier":{"issn":["2469-9950","2469-9969"]},"year":"2024","title":"Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching"},{"quality_controlled":"1","abstract":[{"lang":"eng","text":"Studying and understanding many‐body interactions, particularly electron‐boson interactions, is essential for a deeper elucidation of fundamental physical phenomena and the development of novel material functionalities. Here, this aspect is explored in the weak itinerant ferromagnet LaCo2P2 by means of momentum‐resolved photoelectron spectroscopy (ARPES) and first‐principles calculations. The detailed ARPES patterns enable to unveil bulk and surface bands, spin splittings due to Rashba and exchange interactions, as well as the evolution of bands with temperature, which altogether creates a solid foundation for theoretical studies. The latter has allowed to establish the impact of electron‐boson interactions on the electronic structure, that are reflected in its strong renormalization driven by electron‐magnon interaction and the emergence of distinctive kinks of surface and bulk electron bands due to significant electron‐phonon coupling. Our results highlight the distinct impact of electron‐boson interactions on the electronic structure, particularly on the itinerant d states. Similar electronic states are observed in the isostructural iron pnictides, where electron‐boson interactions play a crucial role in the emergence of superconductivity. It is believed that further studies of material systems involving both magnetically active d‐ and f‐sublattices will reveal more advanced phenomena in the bulk and at distinct surfaces, driven by a combination of factors including Rashba and Kondo effects, exchange magnetism, and electron‐boson interactions."}],"publication":"Advanced Physics Research","citation":{"ama":"Usachov DYu, Ali K, Poelchen G, et al. Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2. <i>Advanced Physics Research</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1002/apxr.202400137\">10.1002/apxr.202400137</a>","bibtex":"@article{Usachov_Ali_Poelchen_Mende_Schulz_Peters_Bokai_Sklyadneva_Stolyarov_Chulkov_et al._2024, title={Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2}, DOI={<a href=\"https://doi.org/10.1002/apxr.202400137\">10.1002/apxr.202400137</a>}, journal={Advanced Physics Research}, publisher={Wiley}, author={Usachov, D. Yu. and Ali, K. and Poelchen, G. and Mende, M. and Schulz, S. and Peters, M. and Bokai, K. and Sklyadneva, I. Yu. and Stolyarov, V. and Chulkov, E. V. and et al.}, year={2024} }","mla":"Usachov, D. Yu., et al. “Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2.” <i>Advanced Physics Research</i>, Wiley, 2024, doi:<a href=\"https://doi.org/10.1002/apxr.202400137\">10.1002/apxr.202400137</a>.","short":"D.Yu. Usachov, K. Ali, G. Poelchen, M. Mende, S. Schulz, M. Peters, K. Bokai, I.Yu. Sklyadneva, V. Stolyarov, E.V. Chulkov, K. Kliemt, S. Paischer, P.A. Buczek, R. Heid, F. Hempel, M. Rüsing, A. Ernst, C. Krellner, S.V. Eremeev, D.V. Vyalikh, Advanced Physics Research (2024).","chicago":"Usachov, D. Yu., K. Ali, G. Poelchen, M. Mende, S. Schulz, M. Peters, K. Bokai, et al. “Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2.” <i>Advanced Physics Research</i>, 2024. <a href=\"https://doi.org/10.1002/apxr.202400137\">https://doi.org/10.1002/apxr.202400137</a>.","apa":"Usachov, D. Yu., Ali, K., Poelchen, G., Mende, M., Schulz, S., Peters, M., Bokai, K., Sklyadneva, I. Yu., Stolyarov, V., Chulkov, E. V., Kliemt, K., Paischer, S., Buczek, P. A., Heid, R., Hempel, F., Rüsing, M., Ernst, A., Krellner, C., Eremeev, S. V., &#38; Vyalikh, D. V. (2024). Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2. <i>Advanced Physics Research</i>. <a href=\"https://doi.org/10.1002/apxr.202400137\">https://doi.org/10.1002/apxr.202400137</a>","ieee":"D. Yu. Usachov <i>et al.</i>, “Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2,” <i>Advanced Physics Research</i>, 2024, doi: <a href=\"https://doi.org/10.1002/apxr.202400137\">10.1002/apxr.202400137</a>."},"type":"journal_article","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"date_created":"2025-04-02T16:18:56Z","publication_status":"published","date_updated":"2025-04-02T16:20:41Z","status":"public","year":"2024","title":"Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2","author":[{"last_name":"Usachov","first_name":"D. Yu.","full_name":"Usachov, D. Yu."},{"last_name":"Ali","first_name":"K.","full_name":"Ali, K."},{"first_name":"G.","last_name":"Poelchen","full_name":"Poelchen, G."},{"first_name":"M.","last_name":"Mende","full_name":"Mende, M."},{"first_name":"S.","last_name":"Schulz","full_name":"Schulz, S."},{"last_name":"Peters","first_name":"M.","full_name":"Peters, M."},{"full_name":"Bokai, K.","last_name":"Bokai","first_name":"K."},{"full_name":"Sklyadneva, I. Yu.","first_name":"I. Yu.","last_name":"Sklyadneva"},{"last_name":"Stolyarov","first_name":"V.","full_name":"Stolyarov, V."},{"full_name":"Chulkov, E. V.","first_name":"E. V.","last_name":"Chulkov"},{"first_name":"K.","last_name":"Kliemt","full_name":"Kliemt, K."},{"first_name":"S.","last_name":"Paischer","full_name":"Paischer, S."},{"last_name":"Buczek","first_name":"P. A.","full_name":"Buczek, P. A."},{"last_name":"Heid","first_name":"R.","full_name":"Heid, R."},{"full_name":"Hempel, F.","first_name":"F.","last_name":"Hempel"},{"full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael","id":"22501"},{"last_name":"Ernst","first_name":"A.","full_name":"Ernst, A."},{"first_name":"C.","last_name":"Krellner","full_name":"Krellner, C."},{"full_name":"Eremeev, S. V.","first_name":"S. V.","last_name":"Eremeev"},{"full_name":"Vyalikh, D. V.","last_name":"Vyalikh","first_name":"D. V."}],"publication_identifier":{"issn":["2751-1200","2751-1200"]},"user_id":"22501","doi":"10.1002/apxr.202400137","_id":"59275","publisher":"Wiley","language":[{"iso":"eng"}]},{"date_created":"2024-07-01T21:00:43Z","department":[{"_id":"15"},{"_id":"169"},{"_id":"288"},{"_id":"623"}],"keyword":["Ferroelectrics","lithium niobate","piezoresponse force microscopy"],"type":"journal_article","publication":"Journal of Applied Physics","issue":"22","abstract":[{"lang":"eng","text":"Piezoresponse force microscopy (PFM) is one of the most widespread methods for investigating and visualizing ferroelectric domain structures down to the nanometer length scale. PFM makes use of the direct coupling of the piezoelectric response to the crystal lattice, and hence, it is most often applied to spatially map the three-dimensional (3D) near-surface domain distribution of any polar or ferroic sample. Nonetheless, since most samples investigated by PFM are at least semiconducting or fully insulating, the electric ac field emerging from the conductive scanning force microscopy (SFM) tip penetrates the sample and, hence, may also couple to polar features that are deeply buried into the bulk of the sample under investigation. Thus, in the work presented here, we experimentally and theoretically explore the contrast and depth resolution capabilities of PFM, by analyzing the dependence of several key parameters. These key parameters include the depth of the buried feature, i.e., here a domain wall (DW), as well as PFM-relevant technical parameters such as the tip radius, the PFM drive voltage and frequency, and the signal-to-noise ratio. The theoretical predictions are experimentally verified using x-cut periodically poled lithium niobate single crystals that are specially prepared into wedge-shaped samples, in order to allow the buried feature, here the DW, to be “positioned” at any depth into the bulk. This inspection essentially contributes to the fundamental understanding in PFM contrast analysis and to the reconstruction of 3D domain structures down to a 1 μm-penetration depth into the sample."}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1063/5.0206784","open_access":"1"}],"doi":"10.1063/5.0206784","publication_identifier":{"issn":["0021-8979","1089-7550"]},"author":[{"last_name":"Roeper","first_name":"Matthias","full_name":"Roeper, Matthias"},{"first_name":"Samuel D.","last_name":"Seddon","full_name":"Seddon, Samuel D."},{"last_name":"Amber","first_name":"Zeeshan H.","full_name":"Amber, Zeeshan H."},{"id":"22501","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael","full_name":"Rüsing, Michael"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."}],"title":"Depth resolution in piezoresponse force microscopy","year":"2024","article_type":"original","intvolume":"       135","publication_status":"published","date_updated":"2025-04-03T12:35:34Z","oa":"1","citation":{"apa":"Roeper, M., Seddon, S. D., Amber, Z. H., Rüsing, M., &#38; Eng, L. M. (2024). Depth resolution in piezoresponse force microscopy. <i>Journal of Applied Physics</i>, <i>135</i>(22). <a href=\"https://doi.org/10.1063/5.0206784\">https://doi.org/10.1063/5.0206784</a>","ieee":"M. Roeper, S. D. Seddon, Z. H. Amber, M. Rüsing, and L. M. Eng, “Depth resolution in piezoresponse force microscopy,” <i>Journal of Applied Physics</i>, vol. 135, no. 22, 2024, doi: <a href=\"https://doi.org/10.1063/5.0206784\">10.1063/5.0206784</a>.","short":"M. Roeper, S.D. Seddon, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied Physics 135 (2024).","chicago":"Roeper, Matthias, Samuel D. Seddon, Zeeshan H. Amber, Michael Rüsing, and Lukas M. Eng. “Depth Resolution in Piezoresponse Force Microscopy.” <i>Journal of Applied Physics</i> 135, no. 22 (2024). <a href=\"https://doi.org/10.1063/5.0206784\">https://doi.org/10.1063/5.0206784</a>.","mla":"Roeper, Matthias, et al. “Depth Resolution in Piezoresponse Force Microscopy.” <i>Journal of Applied Physics</i>, vol. 135, no. 22, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0206784\">10.1063/5.0206784</a>.","ama":"Roeper M, Seddon SD, Amber ZH, Rüsing M, Eng LM. Depth resolution in piezoresponse force microscopy. <i>Journal of Applied Physics</i>. 2024;135(22). doi:<a href=\"https://doi.org/10.1063/5.0206784\">10.1063/5.0206784</a>","bibtex":"@article{Roeper_Seddon_Amber_Rüsing_Eng_2024, title={Depth resolution in piezoresponse force microscopy}, volume={135}, DOI={<a href=\"https://doi.org/10.1063/5.0206784\">10.1063/5.0206784</a>}, number={22}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Roeper, Matthias and Seddon, Samuel D. and Amber, Zeeshan H. and Rüsing, Michael and Eng, Lukas M.}, year={2024} }"},"quality_controlled":"1","_id":"54966","publisher":"AIP Publishing","volume":135,"user_id":"22501","status":"public"},{"author":[{"last_name":"Schwabe","first_name":"Tobias","full_name":"Schwabe, Tobias","id":"39217"},{"last_name":"Rüsing","orcid":"0000-0003-4682-4577","first_name":"Michael","full_name":"Rüsing, Michael","id":"22501"},{"first_name":"Niels","last_name":"Staal","full_name":"Staal, Niels"},{"full_name":"Schwengelbeck, Max","last_name":"Schwengelbeck","first_name":"Max"},{"id":"61375","full_name":"Bollmers, Laura","last_name":"Bollmers","first_name":"Laura"},{"last_name":"Padberg","first_name":"Laura","full_name":"Padberg, Laura","id":"40300"},{"id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof","last_name":"Eigner","full_name":"Eigner, Christof"},{"full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn","id":"26263"},{"orcid":"0000-0002-5950-6618 ","first_name":"J. Christoph","last_name":"Scheytt","full_name":"Scheytt, J. Christoph","id":"37144"}],"title":"Quantum photonic systems in CMOS compatible silicon nitride technology ","status":"public","year":"2024","date_updated":"2025-04-03T12:34:56Z","language":[{"iso":"eng"}],"_id":"59259","publisher":"Zenodo","doi":"10.5281/zenodo.15124929","user_id":"22501","citation":{"short":"T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg, C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology , Zenodo, 2024.","chicago":"Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph Scheytt. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo, 2024. <a href=\"https://doi.org/10.5281/zenodo.15124929\">https://doi.org/10.5281/zenodo.15124929</a>.","ieee":"T. Schwabe <i>et al.</i>, <i>Quantum photonic systems in CMOS compatible silicon nitride technology </i>. Zenodo, 2024.","apa":"Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg, L., Eigner, C., Silberhorn, C., &#38; Scheytt, J. C. (2024). <i>Quantum photonic systems in CMOS compatible silicon nitride technology </i>. Zenodo. <a href=\"https://doi.org/10.5281/zenodo.15124929\">https://doi.org/10.5281/zenodo.15124929</a>","bibtex":"@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024, title={Quantum photonic systems in CMOS compatible silicon nitride technology }, DOI={<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>}, publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }","ama":"Schwabe T, Rüsing M, Staal N, et al. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>","mla":"Schwabe, Tobias, et al. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>."},"date_created":"2025-04-02T11:24:23Z","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"type":"misc"},{"status":"public","volume":13,"user_id":"22501","_id":"47997","funded_apc":"1","publisher":"MDPI AG","project":[{"name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","grant_number":"231447078","_id":"168"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","grant_number":"PROFILNRW-2020-067","_id":"266"}],"quality_controlled":"1","citation":{"short":"S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).","chicago":"Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i> 13, no. 10 (2023). <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>.","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., &#38; Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>, <i>13</i>(10), Article 1423. <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>","ieee":"S. Neufeld <i>et al.</i>, “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” <i>Crystals</i>, vol. 13, no. 10, Art. no. 1423, 2023, doi: <a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>. 2023;13(10). doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>","bibtex":"@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023, title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family}, volume={13}, DOI={<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>}, number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing, Michael}, year={2023} }","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i>, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>."},"oa":"1","intvolume":"        13","publication_status":"published","date_updated":"2023-10-11T09:15:58Z","publication_identifier":{"issn":["2073-4352"]},"author":[{"full_name":"Neufeld, Sergej","last_name":"Neufeld","first_name":"Sergej"},{"full_name":"Gerstmann, Uwe","last_name":"Gerstmann","first_name":"Uwe","orcid":"0000-0002-4476-223X","id":"171"},{"first_name":"Laura","last_name":"Padberg","full_name":"Padberg, Laura","id":"40300"},{"full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof","id":"13244"},{"full_name":"Berth, Gerhard","last_name":"Berth","first_name":"Gerhard","id":"53"},{"full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn","id":"26263"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."},{"full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","first_name":"Wolf Gero","id":"468"},{"full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael","id":"22501"}],"title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","year":"2023","doi":"10.3390/cryst13101423","language":[{"iso":"eng"}],"article_number":"1423","main_file_link":[{"open_access":"1","url":"https://doi.org/10.3390/cryst13101423"}],"abstract":[{"lang":"eng","text":"The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising material group for applications in quantum and nonlinear optics. The fabrication of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric domain structures, requires a profound understanding of the material properties and crystal structure. In this regard, Raman spectroscopy offers the possibility to study and visualize domain structures, strain, defects, and the local stoichiometry, which are all factors impacting device performance. However, the accurate interpretation of Raman spectra and their changes with respect to extrinsic and intrinsic defects requires a thorough assignment of the Raman modes to their respective crystal features, which to date is only partly conducted based on phenomenological modelling. To address this issue, we calculated the phonon spectra of potassium titanyl phosphate and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium titanyl arsenate (KTiOAsO4) based on density functional theory and compared them with experimental data. Overall, this allows us to assign various spectral features to eigenmodes of lattice substructures with improved detail compared to previous assignments. Nevertheless, the analysis also shows that not all features of the spectra can unambigiously be explained yet. A possible explanation might be that defects or long range fields not included in the modeling play a crucial rule for the resulting Raman spectrum. In conclusion, this work provides an improved foundation into the vibrational properties in the KTiOPO4 material family."}],"issue":"10","publication":"Crystals","department":[{"_id":"169"}],"keyword":["Inorganic Chemistry","Condensed Matter Physics","General Materials Science","General Chemical Engineering"],"type":"journal_article","date_created":"2023-10-11T09:10:53Z"},{"citation":{"bibtex":"@article{Stefszky_vom Bruch_Santandrea_Ricken_Quiring_Eigner_Herrmann_Silberhorn_2023, title={Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications}, volume={31}, DOI={<a href=\"https://doi.org/10.1364/oe.498423\">10.1364/oe.498423</a>}, number={2134903}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Stefszky, M. and vom Bruch, F. and Santandrea, M. and Ricken, R. and Quiring, V. and Eigner, C. and Herrmann, H and Silberhorn, C}, year={2023} }","ama":"Stefszky M, vom Bruch F, Santandrea M, et al. Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications. <i>Optics Express</i>. 2023;31(21). doi:<a href=\"https://doi.org/10.1364/oe.498423\">10.1364/oe.498423</a>","mla":"Stefszky, M., et al. “Lithium Niobate Waveguide Squeezer with Integrated Cavity Length Stabilisation for Network Applications.” <i>Optics Express</i>, vol. 31, no. 21, 34903, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.498423\">10.1364/oe.498423</a>.","short":"M. Stefszky, F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner, H. Herrmann, C. Silberhorn, Optics Express 31 (2023).","chicago":"Stefszky, M., F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner, H Herrmann, and C Silberhorn. “Lithium Niobate Waveguide Squeezer with Integrated Cavity Length Stabilisation for Network Applications.” <i>Optics Express</i> 31, no. 21 (2023). <a href=\"https://doi.org/10.1364/oe.498423\">https://doi.org/10.1364/oe.498423</a>.","ieee":"M. Stefszky <i>et al.</i>, “Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications,” <i>Optics Express</i>, vol. 31, no. 21, Art. no. 34903, 2023, doi: <a href=\"https://doi.org/10.1364/oe.498423\">10.1364/oe.498423</a>.","apa":"Stefszky, M., vom Bruch, F., Santandrea, M., Ricken, R., Quiring, V., Eigner, C., Herrmann, H., &#38; Silberhorn, C. (2023). Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications. <i>Optics Express</i>, <i>31</i>(21), Article 34903. <a href=\"https://doi.org/10.1364/oe.498423\">https://doi.org/10.1364/oe.498423</a>"},"status":"public","_id":"48349","publisher":"Optica Publishing Group","volume":31,"user_id":"42777","publication":"Optics Express","issue":"21","abstract":[{"lang":"eng","text":"<jats:p>We report a titanium indiffused waveguide resonator featuring an integrated electro-optic modulator for cavity length stabilisation that produces close to 5 dB of squeezed light at 1550 nm (2.4 dB directly measured). The resonator is locked on resonance for tens of minutes with 70 mW of SH light incident on the cavity, demonstrating that photorefraction can be mitigated. Squeezed light production concurrent with cavity length stabilisation utilising the integrated EOM is demonstrated. The device demonstrates the suitability of this platform for squeezed light generation in network applications, where stabilisation to the reference field is typically necessary.</jats:p>"}],"date_created":"2023-10-19T14:22:59Z","department":[{"_id":"288"},{"_id":"623"}],"keyword":["Atomic and Molecular Physics","and Optics"],"type":"journal_article","author":[{"last_name":"Stefszky","first_name":"M.","full_name":"Stefszky, M."},{"full_name":"vom Bruch, F.","first_name":"F.","last_name":"vom Bruch"},{"full_name":"Santandrea, M.","last_name":"Santandrea","first_name":"M."},{"full_name":"Ricken, R.","last_name":"Ricken","first_name":"R."},{"full_name":"Quiring, V.","last_name":"Quiring","first_name":"V."},{"full_name":"Eigner, C.","first_name":"C.","last_name":"Eigner"},{"first_name":"H","last_name":"Herrmann","full_name":"Herrmann, H"},{"full_name":"Silberhorn, C","first_name":"C","last_name":"Silberhorn"}],"publication_identifier":{"issn":["1094-4087"]},"title":"Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications","year":"2023","intvolume":"        31","date_updated":"2023-11-02T09:26:42Z","publication_status":"published","language":[{"iso":"eng"}],"article_number":"34903","doi":"10.1364/oe.498423"},{"type":"journal_article","keyword":["Atomic and Molecular Physics","and Optics"],"date_created":"2023-10-24T06:43:16Z","abstract":[{"lang":"eng","text":"<jats:p>Quantum photonic processing via electro-optic components typically requires electronic links across different operation environments, especially when interfacing cryogenic components such as superconducting single photon detectors with room-temperature control and readout electronics. However, readout and driving electronics can introduce detrimental parasitic effects. Here we show an all-optical control and readout of a superconducting nanowire single photon detector (SNSPD), completely electrically decoupled from room temperature electronics. We provide the operation power for the superconducting detector via a cryogenic photodiode, and readout single photon detection signals via a cryogenic electro-optic modulator in the same cryostat. This method opens the possibility for control and readout of superconducting circuits, and feedforward for photonic quantum computing.</jats:p>"}],"publication":"Optics Express","issue":"20","doi":"10.1364/oe.492035","article_number":"32717","language":[{"iso":"eng"}],"date_updated":"2023-11-27T08:43:33Z","publication_status":"published","intvolume":"        31","title":"All optical operation of a superconducting photonic interface","year":"2023","author":[{"id":"50819","last_name":"Thiele","orcid":"0000-0003-0663-5587","first_name":"Frederik","full_name":"Thiele, Frederik"},{"id":"83846","last_name":"Hummel","first_name":"Thomas","full_name":"Hummel, Thomas"},{"first_name":"Adam N.","last_name":"McCaughan","full_name":"McCaughan, Adam N."},{"full_name":"Brockmeier, Julian","first_name":"Julian","last_name":"Brockmeier","id":"44807"},{"id":"46170","full_name":"Protte, Maximilian","first_name":"Maximilian","last_name":"Protte"},{"last_name":"Quiring","first_name":"Victor","full_name":"Quiring, Victor"},{"id":"44373","first_name":"Sebastian","last_name":"Lengeling","full_name":"Lengeling, Sebastian"},{"id":"13244","full_name":"Eigner, Christof","first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine","id":"26263"},{"full_name":"Bartley, Tim","first_name":"Tim","last_name":"Bartley","id":"49683"}],"publication_identifier":{"issn":["1094-4087"]},"citation":{"ama":"Thiele F, Hummel T, McCaughan AN, et al. All optical operation of a superconducting photonic interface. <i>Optics Express</i>. 2023;31(20). doi:<a href=\"https://doi.org/10.1364/oe.492035\">10.1364/oe.492035</a>","bibtex":"@article{Thiele_Hummel_McCaughan_Brockmeier_Protte_Quiring_Lengeling_Eigner_Silberhorn_Bartley_2023, title={All optical operation of a superconducting photonic interface}, volume={31}, DOI={<a href=\"https://doi.org/10.1364/oe.492035\">10.1364/oe.492035</a>}, number={2032717}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Thiele, Frederik and Hummel, Thomas and McCaughan, Adam N. and Brockmeier, Julian and Protte, Maximilian and Quiring, Victor and Lengeling, Sebastian and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}, year={2023} }","mla":"Thiele, Frederik, et al. “All Optical Operation of a Superconducting Photonic Interface.” <i>Optics Express</i>, vol. 31, no. 20, 32717, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.492035\">10.1364/oe.492035</a>.","short":"F. Thiele, T. Hummel, A.N. McCaughan, J. Brockmeier, M. Protte, V. Quiring, S. Lengeling, C. Eigner, C. Silberhorn, T. Bartley, Optics Express 31 (2023).","chicago":"Thiele, Frederik, Thomas Hummel, Adam N. McCaughan, Julian Brockmeier, Maximilian Protte, Victor Quiring, Sebastian Lengeling, Christof Eigner, Christine Silberhorn, and Tim Bartley. “All Optical Operation of a Superconducting Photonic Interface.” <i>Optics Express</i> 31, no. 20 (2023). <a href=\"https://doi.org/10.1364/oe.492035\">https://doi.org/10.1364/oe.492035</a>.","apa":"Thiele, F., Hummel, T., McCaughan, A. N., Brockmeier, J., Protte, M., Quiring, V., Lengeling, S., Eigner, C., Silberhorn, C., &#38; Bartley, T. (2023). All optical operation of a superconducting photonic interface. <i>Optics Express</i>, <i>31</i>(20), Article 32717. <a href=\"https://doi.org/10.1364/oe.492035\">https://doi.org/10.1364/oe.492035</a>","ieee":"F. Thiele <i>et al.</i>, “All optical operation of a superconducting photonic interface,” <i>Optics Express</i>, vol. 31, no. 20, Art. no. 32717, 2023, doi: <a href=\"https://doi.org/10.1364/oe.492035\">10.1364/oe.492035</a>."},"user_id":"50819","volume":31,"publisher":"Optica Publishing Group","_id":"48399","status":"public"},{"status":"public","volume":13,"user_id":"16199","publisher":"MDPI AG","_id":"54852","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","grant_number":"231447078","_id":"53"}],"citation":{"ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>. 2023;13(10). doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>","bibtex":"@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023, title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family}, volume={13}, DOI={<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>}, number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing, Michael}, year={2023} }","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i>, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","short":"S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).","chicago":"Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i> 13, no. 10 (2023). <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>.","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., &#38; Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>, <i>13</i>(10), Article 1423. <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>","ieee":"S. Neufeld <i>et al.</i>, “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” <i>Crystals</i>, vol. 13, no. 10, Art. no. 1423, 2023, doi: <a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>."},"intvolume":"        13","publication_status":"published","date_updated":"2024-06-24T06:30:23Z","publication_identifier":{"issn":["2073-4352"]},"author":[{"full_name":"Neufeld, Sergej","last_name":"Neufeld","first_name":"Sergej"},{"full_name":"Gerstmann, Uwe","first_name":"Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","id":"171"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"id":"13244","first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof"},{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard","id":"53"},{"last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Eng, Lukas M.","last_name":"Eng","first_name":"Lukas M."},{"last_name":"Schmidt","first_name":"Wolf Gero","orcid":"0000-0002-2717-5076","full_name":"Schmidt, Wolf Gero","id":"468"},{"full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael","id":"22501"}],"year":"2023","title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","doi":"10.3390/cryst13101423","language":[{"iso":"eng"}],"article_number":"1423","abstract":[{"lang":"eng","text":"<jats:p>The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising material group for applications in quantum and nonlinear optics. The fabrication of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric domain structures, requires a profound understanding of the material properties and crystal structure. In this regard, Raman spectroscopy offers the possibility to study and visualize domain structures, strain, defects, and the local stoichiometry, which are all factors impacting device performance. However, the accurate interpretation of Raman spectra and their changes with respect to extrinsic and intrinsic defects requires a thorough assignment of the Raman modes to their respective crystal features, which to date is only partly conducted based on phenomenological modelling. To address this issue, we calculated the phonon spectra of potassium titanyl phosphate and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium titanyl arsenate (KTiOAsO4) based on density functional theory and compared them with experimental data. Overall, this allows us to assign various spectral features to eigenmodes of lattice substructures with improved detail compared to previous assignments. Nevertheless, the analysis also shows that not all features of the spectra can unambigiously be explained yet. A possible explanation might be that defects or long range fields not included in the modeling play a crucial rule for the resulting Raman spectrum. In conclusion, this work provides an improved foundation into the vibrational properties in the KTiOPO4 material family.</jats:p>"}],"issue":"10","publication":"Crystals","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"288"},{"_id":"230"},{"_id":"429"}],"type":"journal_article","date_created":"2024-06-24T06:15:00Z"},{"doi":"10.1103/physrevapplied.19.014072","language":[{"iso":"eng"}],"article_number":"014072","intvolume":"        19","date_updated":"2023-02-15T10:51:33Z","publication_status":"published","publication_identifier":{"issn":["2331-7019"]},"author":[{"first_name":"Carolin","last_name":"Lüders","full_name":"Lüders, Carolin"},{"last_name":"Gil-Lopez","first_name":"Jano","full_name":"Gil-Lopez, Jano"},{"full_name":"Allgaier, Markus","last_name":"Allgaier","first_name":"Markus"},{"full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","last_name":"Brecht","id":"27150"},{"first_name":"Marc","last_name":"Aßmann","full_name":"Aßmann, Marc"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Manfred","last_name":"Bayer","full_name":"Bayer, Manfred"}],"year":"2023","title":"Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras","department":[{"_id":"15"},{"_id":"623"}],"type":"journal_article","keyword":["General Physics and Astronomy"],"date_created":"2023-02-15T10:50:17Z","publication":"Physical Review Applied","issue":"1","volume":19,"user_id":"27150","_id":"42158","publisher":"American Physical Society (APS)","status":"public","project":[{"_id":"71","name":"TRR 142 - C01: TRR 142 - Subproject C01"}],"citation":{"mla":"Lüders, Carolin, et al. “Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras.” <i>Physical Review Applied</i>, vol. 19, no. 1, 014072, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">10.1103/physrevapplied.19.014072</a>.","ama":"Lüders C, Gil-Lopez J, Allgaier M, et al. Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras. <i>Physical Review Applied</i>. 2023;19(1). doi:<a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">10.1103/physrevapplied.19.014072</a>","bibtex":"@article{Lüders_Gil-Lopez_Allgaier_Brecht_Aßmann_Silberhorn_Bayer_2023, title={Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras}, volume={19}, DOI={<a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">10.1103/physrevapplied.19.014072</a>}, number={1014072}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Lüders, Carolin and Gil-Lopez, Jano and Allgaier, Markus and Brecht, Benjamin and Aßmann, Marc and Silberhorn, Christine and Bayer, Manfred}, year={2023} }","apa":"Lüders, C., Gil-Lopez, J., Allgaier, M., Brecht, B., Aßmann, M., Silberhorn, C., &#38; Bayer, M. (2023). Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras. <i>Physical Review Applied</i>, <i>19</i>(1), Article 014072. <a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">https://doi.org/10.1103/physrevapplied.19.014072</a>","ieee":"C. Lüders <i>et al.</i>, “Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras,” <i>Physical Review Applied</i>, vol. 19, no. 1, Art. no. 014072, 2023, doi: <a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">10.1103/physrevapplied.19.014072</a>.","short":"C. Lüders, J. Gil-Lopez, M. Allgaier, B. Brecht, M. Aßmann, C. Silberhorn, M. Bayer, Physical Review Applied 19 (2023).","chicago":"Lüders, Carolin, Jano Gil-Lopez, Markus Allgaier, Benjamin Brecht, Marc Aßmann, Christine Silberhorn, and Manfred Bayer. “Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras.” <i>Physical Review Applied</i> 19, no. 1 (2023). <a href=\"https://doi.org/10.1103/physrevapplied.19.014072\">https://doi.org/10.1103/physrevapplied.19.014072</a>."}},{"status":"public","page":"769-772","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","_id":"45485","user_id":"27150","volume":35,"citation":{"short":"S. Kruse, L. Serino, P.F. Folge, D. Echeverria Oviedo, A. Bhattacharjee, M. Stefszky, J.C. Scheytt, B. Brecht, C. Silberhorn, IEEE Photonics Technology Letters 35 (2023) 769–772.","chicago":"Kruse, Stephan, Laura Serino, Patrick Fabian Folge, Dana Echeverria Oviedo, Abhinandan Bhattacharjee, Michael Stefszky, J. Christoph Scheytt, Benjamin Brecht, and Christine Silberhorn. “A Pulsed Lidar System With Ultimate Quantum Range Accuracy.” <i>IEEE Photonics Technology Letters</i> 35, no. 14 (2023): 769–72. <a href=\"https://doi.org/10.1109/lpt.2023.3277515\">https://doi.org/10.1109/lpt.2023.3277515</a>.","apa":"Kruse, S., Serino, L., Folge, P. F., Echeverria Oviedo, D., Bhattacharjee, A., Stefszky, M., Scheytt, J. C., Brecht, B., &#38; Silberhorn, C. (2023). A Pulsed Lidar System With Ultimate Quantum Range Accuracy. <i>IEEE Photonics Technology Letters</i>, <i>35</i>(14), 769–772. <a href=\"https://doi.org/10.1109/lpt.2023.3277515\">https://doi.org/10.1109/lpt.2023.3277515</a>","ieee":"S. Kruse <i>et al.</i>, “A Pulsed Lidar System With Ultimate Quantum Range Accuracy,” <i>IEEE Photonics Technology Letters</i>, vol. 35, no. 14, pp. 769–772, 2023, doi: <a href=\"https://doi.org/10.1109/lpt.2023.3277515\">10.1109/lpt.2023.3277515</a>.","ama":"Kruse S, Serino L, Folge PF, et al. A Pulsed Lidar System With Ultimate Quantum Range Accuracy. <i>IEEE Photonics Technology Letters</i>. 2023;35(14):769-772. doi:<a href=\"https://doi.org/10.1109/lpt.2023.3277515\">10.1109/lpt.2023.3277515</a>","bibtex":"@article{Kruse_Serino_Folge_Echeverria Oviedo_Bhattacharjee_Stefszky_Scheytt_Brecht_Silberhorn_2023, title={A Pulsed Lidar System With Ultimate Quantum Range Accuracy}, volume={35}, DOI={<a href=\"https://doi.org/10.1109/lpt.2023.3277515\">10.1109/lpt.2023.3277515</a>}, number={14}, journal={IEEE Photonics Technology Letters}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Kruse, Stephan and Serino, Laura and Folge, Patrick Fabian and Echeverria Oviedo, Dana and Bhattacharjee, Abhinandan and Stefszky, Michael and Scheytt, J. Christoph and Brecht, Benjamin and Silberhorn, Christine}, year={2023}, pages={769–772} }","mla":"Kruse, Stephan, et al. “A Pulsed Lidar System With Ultimate Quantum Range Accuracy.” <i>IEEE Photonics Technology Letters</i>, vol. 35, no. 14, Institute of Electrical and Electronics Engineers (IEEE), 2023, pp. 769–72, doi:<a href=\"https://doi.org/10.1109/lpt.2023.3277515\">10.1109/lpt.2023.3277515</a>."},"title":"A Pulsed Lidar System With Ultimate Quantum Range Accuracy","year":"2023","publication_identifier":{"issn":["1041-1135","1941-0174"]},"author":[{"id":"38254","full_name":"Kruse, Stephan","last_name":"Kruse","first_name":"Stephan"},{"id":"88242","full_name":"Serino, Laura","last_name":"Serino","first_name":"Laura"},{"id":"88605","first_name":"Patrick Fabian","last_name":"Folge","full_name":"Folge, Patrick Fabian"},{"full_name":"Echeverria Oviedo, Dana","last_name":"Echeverria Oviedo","first_name":"Dana"},{"last_name":"Bhattacharjee","first_name":"Abhinandan","full_name":"Bhattacharjee, Abhinandan"},{"full_name":"Stefszky, Michael","first_name":"Michael","last_name":"Stefszky","id":"42777"},{"last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","first_name":"J. Christoph","full_name":"Scheytt, J. Christoph","id":"37144"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","full_name":"Brecht, Benjamin","id":"27150"},{"last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263"}],"date_updated":"2023-06-06T10:13:05Z","publication_status":"published","intvolume":"        35","language":[{"iso":"eng"}],"doi":"10.1109/lpt.2023.3277515","issue":"14","publication":"IEEE Photonics Technology Letters","date_created":"2023-06-06T10:09:05Z","keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"type":"journal_article","department":[{"_id":"15"},{"_id":"58"},{"_id":"623"},{"_id":"230"},{"_id":"288"}]},{"citation":{"short":"S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P. Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express 31 (2023).","chicago":"Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky, Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” <i>Optics Express</i> 31, no. 14 (2023). <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>.","ieee":"S. Babel <i>et al.</i>, “Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler,” <i>Optics Express</i>, vol. 31, no. 14, Art. no. 23140, 2023, doi: <a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>.","apa":"Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F., Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., &#38; Silberhorn, C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>, <i>31</i>(14), Article 23140. <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>","bibtex":"@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler}, volume={31}, DOI={<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>}, number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }","ama":"Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>. 2023;31(14). doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>","mla":"Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” <i>Optics Express</i>, vol. 31, no. 14, 23140, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>."},"_id":"45850","publisher":"Optica Publishing Group","user_id":"63231","volume":31,"status":"public","date_created":"2023-07-03T14:08:36Z","type":"journal_article","keyword":["Atomic and Molecular Physics","and Optics"],"department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}],"issue":"14","publication":"Optics Express","abstract":[{"lang":"eng","text":"Interference between single photons is key for many quantum optics experiments and applications in quantum technologies, such as quantum communication or computation. It is advantageous to operate the systems at telecommunication wavelengths and to integrate the setups for these applications in order to improve stability, compactness and scalability. A new promising material platform for integrated quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel (HOM) interference between telecom photons from an engineered parametric down-conversion source in an LNOI directional coupler. The coupler has been designed and fabricated in house and provides close to perfect balanced beam splitting. We obtain a raw HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and in good agreement with off-chip measurements. This lays the foundation for more sophisticated quantum experiments in LNOI."}],"article_number":"23140","language":[{"iso":"eng"}],"doi":"10.1364/oe.484126","title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","year":"2023","author":[{"id":"63231","full_name":"Babel, Silia","first_name":"Silia","orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel"},{"full_name":"Bollmers, Laura","first_name":"Laura","last_name":"Bollmers","id":"61375"},{"id":"59545","full_name":"Massaro, Marcello","last_name":"Massaro","first_name":"Marcello","orcid":"0000-0002-2539-7652"},{"id":"36389","last_name":"Luo","first_name":"Kai Hong","orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong"},{"id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael"},{"first_name":"Federico","last_name":"Pegoraro","full_name":"Pegoraro, Federico","id":"88928"},{"id":"68236","first_name":"Philip","last_name":"Held","full_name":"Held, Philip"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"id":"13244","last_name":"Eigner","first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof"},{"full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin","id":"27150"},{"full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura","id":"40300"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"publication_identifier":{"issn":["1094-4087"]},"date_updated":"2023-07-05T07:58:31Z","publication_status":"published","intvolume":"        31"},{"date_updated":"2023-07-25T10:58:05Z","publication_status":"published","intvolume":"        48","article_type":"original","year":"2023","title":"Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing","author":[{"full_name":"Domeneguetti, Renato","last_name":"Domeneguetti","first_name":"Renato"},{"last_name":"Stefszky","first_name":"Michael","full_name":"Stefszky, Michael","id":"42777"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Ulrik L.","last_name":"Andersen","full_name":"Andersen, Ulrik L."},{"first_name":"Jonas S.","last_name":"Neergaard-Nielsen","full_name":"Neergaard-Nielsen, Jonas S."},{"last_name":"Gehring","first_name":"Tobias","full_name":"Gehring, Tobias"}],"publication_identifier":{"issn":["0146-9592","1539-4794"]},"doi":"10.1364/ol.486654","article_number":"2999","language":[{"iso":"eng"}],"abstract":[{"text":"<jats:p>This work reports a fully guided setup for single-mode squeezing on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous-wave laser beam is delivered and the squeezed field is collected by single-mode fibers; up to −3.17(9) dB of useful squeezing is available in fibers. To showcase the usefulness of such a fiber-coupled device, we applied the generated squeezed light in a fiber-based phase sensing experiment, showing a quantum enhancement in the signal-to-noise ratio of 0.35 dB. Moreover, our investigation of the effect of photorefraction on the cavity resonance condition suggests that it causes system instabilities at high powers.</jats:p>","lang":"eng"}],"issue":"11","publication":"Optics Letters","type":"journal_article","keyword":["Atomic and Molecular Physics","and Optics"],"department":[{"_id":"230"},{"_id":"623"},{"_id":"288"}],"date_created":"2023-07-25T10:35:24Z","status":"public","user_id":"216","volume":48,"_id":"46138","publisher":"Optica Publishing Group","quality_controlled":"1","project":[{"_id":"218","name":"UNIQORN: UNIQORN - Affordable Quantum Communication for Everyone - EU Quantum Flagship Project"}],"citation":{"chicago":"Domeneguetti, Renato, Michael Stefszky, Harald Herrmann, Christine Silberhorn, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen, and Tobias Gehring. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” <i>Optics Letters</i> 48, no. 11 (2023). <a href=\"https://doi.org/10.1364/ol.486654\">https://doi.org/10.1364/ol.486654</a>.","short":"R. Domeneguetti, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, Optics Letters 48 (2023).","ieee":"R. Domeneguetti <i>et al.</i>, “Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing,” <i>Optics Letters</i>, vol. 48, no. 11, Art. no. 2999, 2023, doi: <a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>.","apa":"Domeneguetti, R., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., &#38; Gehring, T. (2023). Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. <i>Optics Letters</i>, <i>48</i>(11), Article 2999. <a href=\"https://doi.org/10.1364/ol.486654\">https://doi.org/10.1364/ol.486654</a>","bibtex":"@article{Domeneguetti_Stefszky_Herrmann_Silberhorn_Andersen_Neergaard-Nielsen_Gehring_2023, title={Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing}, volume={48}, DOI={<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>}, number={112999}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Domeneguetti, Renato and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas S. and Gehring, Tobias}, year={2023} }","ama":"Domeneguetti R, Stefszky M, Herrmann H, et al. Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. <i>Optics Letters</i>. 2023;48(11). doi:<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>","mla":"Domeneguetti, Renato, et al. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” <i>Optics Letters</i>, vol. 48, no. 11, 2999, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>."}},{"citation":{"short":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express 31 (2023).","chicago":"Kießler, Christian, Hauke Conradi, Moritz Kleinert, Viktor Quiring, Harald Herrmann, and Christine Silberhorn. “Fiber-Coupled Plug-and-Play Heralded Single Photon Source Based on Ti:LiNbO3 and Polymer Technology.” <i>Optics Express</i> 31, no. 14 (2023). <a href=\"https://doi.org/10.1364/oe.487581\">https://doi.org/10.1364/oe.487581</a>.","apa":"Kießler, C., Conradi, H., Kleinert, M., Quiring, V., Herrmann, H., &#38; Silberhorn, C. (2023). Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. <i>Optics Express</i>, <i>31</i>(14), Article 22685. <a href=\"https://doi.org/10.1364/oe.487581\">https://doi.org/10.1364/oe.487581</a>","ieee":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, and C. Silberhorn, “Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology,” <i>Optics Express</i>, vol. 31, no. 14, Art. no. 22685, 2023, doi: <a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>.","ama":"Kießler C, Conradi H, Kleinert M, Quiring V, Herrmann H, Silberhorn C. Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. <i>Optics Express</i>. 2023;31(14). doi:<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>","bibtex":"@article{Kießler_Conradi_Kleinert_Quiring_Herrmann_Silberhorn_2023, title={Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology}, volume={31}, DOI={<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>}, number={1422685}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Kießler, Christian and Conradi, Hauke and Kleinert, Moritz and Quiring, Viktor and Herrmann, Harald and Silberhorn, Christine}, year={2023} }","mla":"Kießler, Christian, et al. “Fiber-Coupled Plug-and-Play Heralded Single Photon Source Based on Ti:LiNbO3 and Polymer Technology.” <i>Optics Express</i>, vol. 31, no. 14, 22685, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>."},"volume":31,"user_id":"44252","_id":"46644","publisher":"Optica Publishing Group","status":"public","keyword":["Atomic and Molecular Physics","and Optics"],"type":"journal_article","date_created":"2023-08-23T07:20:06Z","abstract":[{"text":"A reliable, but cost-effective generation of single-photon states is key for practical quantum communication systems. For real-world deployment, waveguide sources offer optimum compatibility with fiber networks and can be embedded in hybrid integrated modules. Here, we present what we believe to be the first chip-size fully integrated fiber-coupled heralded single photon source (HSPS) module based on a hybrid integration of a nonlinear lithium niobate waveguide into a polymer board. Photon pairs at 810 nm (signal) and 1550 nm (idler) are generated via parametric down-conversion pumped at 532 nm in the LiNbO3 waveguide. The pairs are split in the polymer board and routed to separate output ports. The module has a size of (2 × 1) cm^2 and is fully fiber-coupled with one pump input fiber and two output fibers. We measure a heralded second-order correlation function of g_h(2)=0.05 with a heralding efficiency of η_h=3.5% at low pump powers","lang":"eng"}],"publication":"Optics Express","issue":"14","doi":"10.1364/oe.487581","language":[{"iso":"eng"}],"article_number":"22685","intvolume":"        31","article_type":"original","date_updated":"2023-08-23T07:25:37Z","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"author":[{"id":"44252","first_name":"Christian","last_name":"Kießler","full_name":"Kießler, Christian"},{"last_name":"Conradi","first_name":"Hauke","full_name":"Conradi, Hauke"},{"full_name":"Kleinert, Moritz","first_name":"Moritz","last_name":"Kleinert"},{"last_name":"Quiring","first_name":"Viktor","full_name":"Quiring, Viktor"},{"id":"216","first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald"},{"id":"26263","last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine"}],"year":"2023","title":"Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology"},{"language":[{"iso":"eng"}],"doi":"10.1117/12.2658921","author":[{"id":"53444","full_name":"Farheen, Henna","last_name":"Farheen","first_name":"Henna","orcid":"0000-0001-7730-3489"},{"first_name":"Lok-Yee","last_name":"Yan","full_name":"Yan, Lok-Yee"},{"last_name":"Leuteritz","first_name":"Till","full_name":"Leuteritz, Till"},{"full_name":"Qiao, Siqi","first_name":"Siqi","last_name":"Qiao"},{"full_name":"Spreyer, Florian","last_name":"Spreyer","first_name":"Florian"},{"full_name":"Schlickriede, Christian","last_name":"Schlickriede","first_name":"Christian"},{"last_name":"Quiring","first_name":"Viktor","full_name":"Quiring, Viktor"},{"full_name":"Eigner, Christof","last_name":"Eigner","first_name":"Christof"},{"full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn","id":"26263"},{"first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","full_name":"Zentgraf, Thomas","id":"30525"},{"first_name":"Stefan","last_name":"Linden","full_name":"Linden, Stefan"},{"id":"46371","full_name":"Myroshnychenko, Viktor","last_name":"Myroshnychenko","first_name":"Viktor"},{"full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","first_name":"Jens","id":"158"}],"year":"2023","title":"Tailoring the directive nature of optical waveguide antennas","date_updated":"2025-05-23T05:57:14Z","publication_status":"published","date_created":"2023-03-21T12:28:31Z","file":[{"relation":"main_file","date_updated":"2023-03-22T09:25:57Z","file_name":"2023-01 Poster Photonics West Henna OWA_A0.pdf","file_size":1426599,"access_level":"local","file_id":"43062","content_type":"application/pdf","creator":"fossie","date_created":"2023-03-22T09:25:57Z"}],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"keyword":["tet_topic_opticalantenna"],"type":"conference","publication":"Integrated Optics: Devices, Materials, and Technologies XXVII","abstract":[{"text":"We demonstrate the numerical and experimental realization of optimized optical traveling-wave antennas made of low-loss dielectric materials. These antennas exhibit highly directive radiation patterns and our studies reveal that this nature comes from two dominant guided TE modes excited in the waveguide-like director of the antenna, in addition to the leaky modes. The optimized antennas possess a broadband nature and have a nearunity radiation efficiency at an operational wavelength of 780 nm. Compared to the previously studied plasmonic antennas for photon emission, our all-dielectric approach demonstrates a new class of highly directional, low-loss, and broadband optical antennas.","lang":"eng"}],"publisher":"SPIE","_id":"43051","page":"124241E","editor":[{"full_name":"García-Blanco, Sonia M.","last_name":"García-Blanco","first_name":"Sonia M."},{"last_name":"Cheben","first_name":"Pavel","full_name":"Cheben, Pavel"}],"ddc":["530"],"user_id":"30525","status":"public","has_accepted_license":"1","citation":{"mla":"Farheen, Henna, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241E, doi:<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>.","bibtex":"@inproceedings{Farheen_Yan_Leuteritz_Qiao_Spreyer_Schlickriede_Quiring_Eigner_Silberhorn_Zentgraf_et al._2023, title={Tailoring the directive nature of optical waveguide antennas}, DOI={<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>}, booktitle={Integrated Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE}, author={Farheen, Henna and Yan, Lok-Yee and Leuteritz, Till and Qiao, Siqi and Spreyer, Florian and Schlickriede, Christian and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Zentgraf, Thomas and et al.}, editor={García-Blanco, Sonia M. and Cheben, Pavel}, year={2023}, pages={124241E} }","ama":"Farheen H, Yan L-Y, Leuteritz T, et al. Tailoring the directive nature of optical waveguide antennas. In: García-Blanco SM, Cheben P, eds. <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>. SPIE; 2023:124241E. doi:<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>","ieee":"H. Farheen <i>et al.</i>, “Tailoring the directive nature of optical waveguide antennas,” in <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, 2023, p. 124241E, doi: <a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>.","apa":"Farheen, H., Yan, L.-Y., Leuteritz, T., Qiao, S., Spreyer, F., Schlickriede, C., Quiring, V., Eigner, C., Silberhorn, C., Zentgraf, T., Linden, S., Myroshnychenko, V., &#38; Förstner, J. (2023). Tailoring the directive nature of optical waveguide antennas. In S. M. García-Blanco &#38; P. Cheben (Eds.), <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i> (p. 124241E). SPIE. <a href=\"https://doi.org/10.1117/12.2658921\">https://doi.org/10.1117/12.2658921</a>","short":"H. Farheen, L.-Y. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241E.","chicago":"Farheen, Henna, Lok-Yee Yan, Till Leuteritz, Siqi Qiao, Florian Spreyer, Christian Schlickriede, Viktor Quiring, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” In <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, edited by Sonia M. García-Blanco and Pavel Cheben, 124241E. SPIE, 2023. <a href=\"https://doi.org/10.1117/12.2658921\">https://doi.org/10.1117/12.2658921</a>."},"file_date_updated":"2023-03-22T09:25:57Z","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","grant_number":"231447078"},{"_id":"65","grant_number":"231447078","name":"TRR 142 - A08: TRR 142 - Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten (A08)"}]},{"citation":{"short":"C. Eigner, L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, in: CLEO 2023, Optica Publishing Group, 2023.","chicago":"Eigner, Christof, Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, and Christine Silberhorn. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” In <i>CLEO 2023</i>. Optica Publishing Group, 2023. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>.","ieee":"C. Eigner <i>et al.</i>, “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance,” 2023, doi: <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>.","apa":"Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt, W. G., &#38; Silberhorn, C. (2023). Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. <i>CLEO 2023</i>. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>","bibtex":"@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023, title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance}, DOI={<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>}, booktitle={CLEO 2023}, publisher={Optica Publishing Group}, author={Eigner, Christof and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}, year={2023} }","ama":"Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. In: <i>CLEO 2023</i>. Optica Publishing Group; 2023. doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>","mla":"Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” <i>CLEO 2023</i>, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>."},"publication":"CLEO 2023","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142 - Project Area B","_id":"55"},{"name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","_id":"168"},{"name":"TRR 142 - Subproject A11","_id":"166"}],"abstract":[{"lang":"eng","text":"<jats:p>We study the interaction of gray tracking and DC ionic conductivity in Potassium Titanyl Phosphate (KTiOPO<jats:sub>4</jats:sub>, KTP) and present a novel way to reduce conductivity via a potassium nitrate treatment improving the device quality.</jats:p>"}],"date_created":"2025-09-18T12:06:19Z","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"27"}],"type":"conference","author":[{"id":"13244","first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof"},{"id":"40300","last_name":"Padberg","first_name":"Laura","full_name":"Padberg, Laura"},{"last_name":"Quiring","first_name":"Viktor","full_name":"Quiring, Viktor"},{"full_name":"Bocchini, Adriana","first_name":"Adriana","last_name":"Bocchini","orcid":"0000-0002-2134-3075","id":"58349"},{"first_name":"Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea","full_name":"Santandrea, Matteo","id":"55095"},{"full_name":"Gerstmann, Uwe","last_name":"Gerstmann","first_name":"Uwe","orcid":"0000-0002-4476-223X","id":"171"},{"full_name":"Schmidt, Wolf Gero","first_name":"Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","id":"468"},{"full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine","id":"26263"}],"title":"Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance","year":"2023","status":"public","publication_status":"published","date_updated":"2025-09-18T12:08:56Z","_id":"61362","language":[{"iso":"eng"}],"publisher":"Optica Publishing Group","user_id":"16199","doi":"10.1364/cleo_at.2023.jw2a.57"},{"department":[{"_id":"623"},{"_id":"15"}],"type":"journal_article","date_created":"2023-01-24T08:04:47Z","citation":{"ieee":"S. Barkhofen, B. Brecht, and C. Silberhorn, “Verschränkung wie am Fließband,” <i>Physik in unserer Zeit</i>, vol. 54, no. 1, pp. 10–11, 2023, doi: <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>.","apa":"Barkhofen, S., Brecht, B., &#38; Silberhorn, C. (2023). Verschränkung wie am Fließband. <i>Physik in unserer Zeit</i>, <i>54</i>(1), 10–11. <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>","chicago":"Barkhofen, Sonja, Benjamin Brecht, and Christine Silberhorn. “Verschränkung wie am Fließband.” <i>Physik in unserer Zeit</i> 54, no. 1 (2023): 10–11. <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>.","short":"S. Barkhofen, B. Brecht, C. Silberhorn, Physik in unserer Zeit 54 (2023) 10–11.","mla":"Barkhofen, Sonja, et al. “Verschränkung wie am Fließband.” <i>Physik in unserer Zeit</i>, vol. 54, no. 1, Wiley, 2023, pp. 10–11, doi:<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>.","bibtex":"@article{Barkhofen_Brecht_Silberhorn_2023, title={Verschränkung wie am Fließband}, volume={54}, DOI={<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>}, number={1}, journal={Physik in unserer Zeit}, publisher={Wiley}, author={Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2023}, pages={10–11} }","ama":"Barkhofen S, Brecht B, Silberhorn C. Verschränkung wie am Fließband. <i>Physik in unserer Zeit</i>. 2023;54(1):10-11. doi:<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>"},"issue":"1","publication":"Physik in unserer Zeit","volume":54,"doi":"https://doi.org/10.1002/piuz.202370107","user_id":"48188","language":[{"iso":"ger"}],"_id":"38541","publisher":"Wiley","page":"10-11","intvolume":"        54","date_updated":"2025-12-04T13:36:42Z","publication_status":"published","author":[{"id":"48188","first_name":"Sonja","last_name":"Barkhofen","full_name":"Barkhofen, Sonja"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","first_name":"Benjamin","orcid":"0000-0003-4140-0556 "},{"last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263"}],"status":"public","title":"Verschränkung wie am Fließband","year":"2023"},{"doi":"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6","user_id":"13256","language":[{"iso":"eng"}],"_id":"45578","publisher":"Optica Publishing Group","date_updated":"2025-12-12T11:26:12Z","title":"Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform","status":"public","year":"2023","conference":{"end_date":"2023-05-12","location":"San Jose, CA, USA","start_date":"2023-05-08","name":" Conference on Lasers and Electro-Optics (CLEO)"},"author":[{"id":"13256","full_name":"Kress, Christian","orcid":"0000-0002-4403-2237","first_name":"Christian","last_name":"Kress"},{"id":"39217","last_name":"Schwabe","first_name":"Tobias","full_name":"Schwabe, Tobias"},{"id":"26263","first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine"},{"id":"37144","orcid":"0000-0002-5950-6618 ","first_name":"J. Christoph","last_name":"Scheytt","full_name":"Scheytt, J. Christoph"}],"type":"conference","department":[{"_id":"58"},{"_id":"230"},{"_id":"623"}],"date_created":"2023-06-12T10:25:25Z","abstract":[{"text":"A frequency-flexible Nyquist pulse synthesizer is presented with optical pulse bandwidths up to fopt=100 GHz and repetition rates equal to fopt/9, fabricated in an electronic-photonic co-integrated platform utilizing linear on-chip drivers.","lang":"eng"}],"project":[{"_id":"302","name":"PONyDAC: PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC"},{"name":"TRR 142; TP C11: Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI","_id":"175"}],"publication":" Conference on Lasers and Electro-Optics (CLEO) 2023","citation":{"chicago":"Kress, Christian, Tobias Schwabe, Christine Silberhorn, and J. Christoph Scheytt. “Generation of 100 GHz Periodic Nyquist Pulses Using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform.” In <i> Conference on Lasers and Electro-Optics (CLEO) 2023</i>. Optica Publishing Group, 2023. <a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>.","short":"C. Kress, T. Schwabe, C. Silberhorn, J.C. Scheytt, in:  Conference on Lasers and Electro-Optics (CLEO) 2023, Optica Publishing Group, 2023.","apa":"Kress, C., Schwabe, T., Silberhorn, C., &#38; Scheytt, J. C. (2023). Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform. <i> Conference on Lasers and Electro-Optics (CLEO) 2023</i>.  Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA. <a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>","ieee":"C. Kress, T. Schwabe, C. Silberhorn, and J. C. Scheytt, “Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform,” presented at the  Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, 2023, doi: <a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>.","ama":"Kress C, Schwabe T, Silberhorn C, Scheytt JC. Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform. In: <i> Conference on Lasers and Electro-Optics (CLEO) 2023</i>. Optica Publishing Group; 2023. doi:<a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>","bibtex":"@inproceedings{Kress_Schwabe_Silberhorn_Scheytt_2023, title={Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform}, DOI={<a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>}, booktitle={ Conference on Lasers and Electro-Optics (CLEO) 2023}, publisher={Optica Publishing Group}, author={Kress, Christian and Schwabe, Tobias and Silberhorn, Christine and Scheytt, J. Christoph}, year={2023} }","mla":"Kress, Christian, et al. “Generation of 100 GHz Periodic Nyquist Pulses Using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform.” <i> Conference on Lasers and Electro-Optics (CLEO) 2023</i>, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6\">https://doi.org/10.1364/CLEO_SI.2023.SF1P.6</a>."}},{"publication_identifier":{"issn":["2691-3399"]},"author":[{"id":"88242","full_name":"Serino, Laura","last_name":"Serino","first_name":"Laura"},{"last_name":"Gil López","first_name":"Jano","full_name":"Gil López, Jano","id":"51223"},{"full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael","id":"42777"},{"full_name":"Ricken, Raimund","first_name":"Raimund","last_name":"Ricken"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244"},{"full_name":"Brecht, Benjamin","last_name":"Brecht","first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","id":"27150"},{"id":"26263","first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine"}],"title":"Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States","year":"2023","intvolume":"         4","date_updated":"2025-12-18T16:15:18Z","publication_status":"published","language":[{"iso":"eng"}],"article_number":"020306","doi":"10.1103/prxquantum.4.020306","publication":"PRX Quantum","issue":"2","date_created":"2023-04-20T12:38:23Z","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"type":"journal_article","keyword":["General Physics and Astronomy","Mathematical Physics","Applied Mathematics","Electronic","Optical and Magnetic Materials","Electrical and Electronic Engineering","General Computer Science"],"status":"public","_id":"44081","publisher":"American Physical Society (APS)","volume":4,"user_id":"27150","citation":{"apa":"Serino, L., Gil López, J., Stefszky, M., Ricken, R., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2023). Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States. <i>PRX Quantum</i>, <i>4</i>(2), Article 020306. <a href=\"https://doi.org/10.1103/prxquantum.4.020306\">https://doi.org/10.1103/prxquantum.4.020306</a>","ieee":"L. Serino <i>et al.</i>, “Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States,” <i>PRX Quantum</i>, vol. 4, no. 2, Art. no. 020306, 2023, doi: <a href=\"https://doi.org/10.1103/prxquantum.4.020306\">10.1103/prxquantum.4.020306</a>.","chicago":"Serino, Laura, Jano Gil López, Michael Stefszky, Raimund Ricken, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States.” <i>PRX Quantum</i> 4, no. 2 (2023). <a href=\"https://doi.org/10.1103/prxquantum.4.020306\">https://doi.org/10.1103/prxquantum.4.020306</a>.","short":"L. Serino, J. Gil López, M. Stefszky, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 4 (2023).","mla":"Serino, Laura, et al. “Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States.” <i>PRX Quantum</i>, vol. 4, no. 2, 020306, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/prxquantum.4.020306\">10.1103/prxquantum.4.020306</a>.","ama":"Serino L, Gil López J, Stefszky M, et al. Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States. <i>PRX Quantum</i>. 2023;4(2). doi:<a href=\"https://doi.org/10.1103/prxquantum.4.020306\">10.1103/prxquantum.4.020306</a>","bibtex":"@article{Serino_Gil López_Stefszky_Ricken_Eigner_Brecht_Silberhorn_2023, title={Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States}, volume={4}, DOI={<a href=\"https://doi.org/10.1103/prxquantum.4.020306\">10.1103/prxquantum.4.020306</a>}, number={2020306}, journal={PRX Quantum}, publisher={American Physical Society (APS)}, author={Serino, Laura and Gil López, Jano and Stefszky, Michael and Ricken, Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2023} }"}},{"doi":"10.1088/1402-4896/acbcaa","article_number":"034005","main_file_link":[{"url":"https://iopscience.iop.org/article/10.1088/1402-4896/acbcaa","open_access":"1"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2026-01-09T09:49:31Z","article_type":"original","intvolume":"        98","title":"Dynamic conditioning of two particle discrete-time quantum walks","year":"2023","author":[{"id":"88928","last_name":"Pegoraro","first_name":"Federico","full_name":"Pegoraro, Federico"},{"full_name":"Held, Philip","first_name":"Philip","last_name":"Held","id":"68236"},{"id":"48188","full_name":"Barkhofen, Sonja","first_name":"Sonja","last_name":"Barkhofen"},{"id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin","full_name":"Brecht, Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"publication_identifier":{"issn":["0031-8949","1402-4896"]},"type":"journal_article","department":[{"_id":"623"},{"_id":"15"},{"_id":"288"},{"_id":"169"}],"date_created":"2023-03-02T09:53:59Z","abstract":[{"text":"In real photonic quantum systems losses are an unavoidable factor limiting the scalability to many modes and particles, restraining their application in fields as quantum information and communication. For this reason, a considerable amount of engineering effort has been taken in order to improve the quality of particle sources and system components. At the same time, data analysis and collection methods based on post-selection have been used to mitigate the effect of particle losses. This has allowed for investigating experimentally multi-particle evolutions where the observer lacks knowledge about the system's intermediate propagation states. Nonetheless, the fundamental question how losses affect the behaviour of the surviving subset of a multi-particle system has not been investigated so far. For this reason, here we study the impact of particle losses in a quantum walk of two photons reconstructing the output probability distributions for one photon conditioned on the loss of the other in a known mode and temporal step of our evolution network. We present the underlying theoretical scheme that we have devised in order to model controlled particle losses, we describe an experimental platform capable of implementing our theory in a time multiplexing encoding. In the end we show how localized particle losses change the output distributions without altering their asymptotic spreading properties. Finally we devise a quantum civilization problem, a two walker generalisation of single particle recurrence processes.","lang":"eng"}],"issue":"3","publication":"Physica Scripta","user_id":"68236","volume":98,"publisher":"IOP Publishing","_id":"42648","status":"public","oa":"1","citation":{"ama":"Pegoraro F, Held P, Barkhofen S, Brecht B, Silberhorn C. Dynamic conditioning of two particle discrete-time quantum walks. <i>Physica Scripta</i>. 2023;98(3). doi:<a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">10.1088/1402-4896/acbcaa</a>","bibtex":"@article{Pegoraro_Held_Barkhofen_Brecht_Silberhorn_2023, title={Dynamic conditioning of two particle discrete-time quantum walks}, volume={98}, DOI={<a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">10.1088/1402-4896/acbcaa</a>}, number={3034005}, journal={Physica Scripta}, publisher={IOP Publishing}, author={Pegoraro, Federico and Held, Philip and Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2023} }","mla":"Pegoraro, Federico, et al. “Dynamic Conditioning of Two Particle Discrete-Time Quantum Walks.” <i>Physica Scripta</i>, vol. 98, no. 3, 034005, IOP Publishing, 2023, doi:<a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">10.1088/1402-4896/acbcaa</a>.","short":"F. Pegoraro, P. Held, S. Barkhofen, B. Brecht, C. Silberhorn, Physica Scripta 98 (2023).","chicago":"Pegoraro, Federico, Philip Held, Sonja Barkhofen, Benjamin Brecht, and Christine Silberhorn. “Dynamic Conditioning of Two Particle Discrete-Time Quantum Walks.” <i>Physica Scripta</i> 98, no. 3 (2023). <a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">https://doi.org/10.1088/1402-4896/acbcaa</a>.","apa":"Pegoraro, F., Held, P., Barkhofen, S., Brecht, B., &#38; Silberhorn, C. (2023). Dynamic conditioning of two particle discrete-time quantum walks. <i>Physica Scripta</i>, <i>98</i>(3), Article 034005. <a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">https://doi.org/10.1088/1402-4896/acbcaa</a>","ieee":"F. Pegoraro, P. Held, S. Barkhofen, B. Brecht, and C. Silberhorn, “Dynamic conditioning of two particle discrete-time quantum walks,” <i>Physica Scripta</i>, vol. 98, no. 3, Art. no. 034005, 2023, doi: <a href=\"https://doi.org/10.1088/1402-4896/acbcaa\">10.1088/1402-4896/acbcaa</a>."}}]