[{"date_created":"2025-12-18T16:09:22Z","author":[{"first_name":"Laura Maria","full_name":"Serino, Laura Maria","id":"88242","last_name":"Serino"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"volume":33,"date_updated":"2025-12-18T16:09:44Z","publisher":"Optica Publishing Group","doi":"10.1364/oe.544206","title":"Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate","issue":"3","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"chicago":"Serino, Laura Maria, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output Quantum Pulse Gate.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.544206.","ieee":"L. M. Serino, C. Eigner, B. Brecht, and C. Silberhorn, “Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate,” Optics Express, vol. 33, no. 3, Art. no. 5577, 2024, doi: 10.1364/oe.544206.","ama":"Serino LM, Eigner C, Brecht B, Silberhorn C. Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate. Optics Express. 2024;33(3). doi:10.1364/oe.544206","apa":"Serino, L. M., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate. Optics Express, 33(3), Article 5577. https://doi.org/10.1364/oe.544206","mla":"Serino, Laura Maria, et al. “Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output Quantum Pulse Gate.” Optics Express, vol. 33, no. 3, 5577, Optica Publishing Group, 2024, doi:10.1364/oe.544206.","short":"L.M. Serino, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 33 (2024).","bibtex":"@article{Serino_Eigner_Brecht_Silberhorn_2024, title={Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate}, volume={33}, DOI={10.1364/oe.544206}, number={35577}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Serino, Laura Maria and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }"},"intvolume":" 33","year":"2024","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"_id":"63217","language":[{"iso":"eng"}],"article_number":"5577","type":"journal_article","publication":"Optics Express","status":"public","abstract":[{"text":"We demonstrate a high-dimensional mode-sorter for single photons based on a multi-output quantum pulse gate, which we can program to switch between different temporal-mode encodings including pulse modes, frequency bins, time bins, and their superpositions. This device can facilitate practical realizations of quantum information applications such as high-dimensional quantum key distribution and thus enables secure communication with enhanced information capacity. We characterize the mode-sorter through a detector tomography in 3 and 5 dimensions and find a fidelity up to 0.958 ± 0.030 at the single-photon level.","lang":"eng"}]},{"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"mla":"Pollmann, René, et al. “Integrated, Bright Broadband, Two-Colour Parametric down-Conversion Source.” Optics Express, vol. 32, no. 14, 23945, Optica Publishing Group, 2024, doi:10.1364/oe.522549.","bibtex":"@article{Pollmann_Roeder_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024, title={Integrated, bright broadband, two-colour parametric down-conversion source}, volume={32}, DOI={10.1364/oe.522549}, number={1423945}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Pollmann, René and Roeder, Franz and Quiring, Victor and Ricken, Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","short":"R. Pollmann, F. Roeder, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 32 (2024).","apa":"Pollmann, R., Roeder, F., Quiring, V., Ricken, R., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Integrated, bright broadband, two-colour parametric down-conversion source. Optics Express, 32(14), Article 23945. https://doi.org/10.1364/oe.522549","ama":"Pollmann R, Roeder F, Quiring V, et al. Integrated, bright broadband, two-colour parametric down-conversion source. Optics Express. 2024;32(14). doi:10.1364/oe.522549","chicago":"Pollmann, René, Franz Roeder, Victor Quiring, Raimund Ricken, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Integrated, Bright Broadband, Two-Colour Parametric down-Conversion Source.” Optics Express 32, no. 14 (2024). https://doi.org/10.1364/oe.522549.","ieee":"R. Pollmann et al., “Integrated, bright broadband, two-colour parametric down-conversion source,” Optics Express, vol. 32, no. 14, Art. no. 23945, 2024, doi: 10.1364/oe.522549."},"intvolume":" 32","date_updated":"2025-12-19T11:37:41Z","author":[{"last_name":"Pollmann","id":"78890","full_name":"Pollmann, René","first_name":"René"},{"full_name":"Roeder, Franz","id":"88149","last_name":"Roeder","first_name":"Franz"},{"first_name":"Victor","last_name":"Quiring","full_name":"Quiring, Victor"},{"full_name":"Ricken, Raimund","last_name":"Ricken","first_name":"Raimund"},{"first_name":"Christof","id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"volume":32,"doi":"10.1364/oe.522549","type":"journal_article","status":"public","_id":"54815","user_id":"78890","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"article_type":"original","article_number":"23945","issue":"14","year":"2024","publisher":"Optica Publishing Group","date_created":"2024-06-19T06:58:17Z","title":"Integrated, bright broadband, two-colour parametric down-conversion source","publication":"Optics Express","abstract":[{"lang":"eng","text":"Broadband quantum light is a vital resource for quantum metrology and spectroscopy applications such as quantum optical coherence tomography or entangled two photon absorption. For entangled two photon absorption in particular, very high photon flux combined with high time-frequency entanglement is crucial for observing a signal. So far these conditions could be met by using high power lasers driving degenerate, type 0 bulk-crystal spontaneous parametric down conversion (SPDC) sources. This naturally limits the available wavelength ranges and precludes deterministic splitting of the generated output photons. In this work we demonstrate an integrated two-colour SPDC source utilising a group-velocity matched lithium niobate waveguide, reaching both exceptional brightness 1.52⋅106pairssmWGHz and large bandwidth (7.8 THz FWHM) while pumped with a few mW of continuous wave (CW) laser light. By converting a narrow band pump to broadband pulses the created photon pairs show correlation times of Δτ ≈ 120 fs while maintaining the narrow bandwidth Δω\r\n p\r\n  ≪ 1 MHz of the CW pump light, yielding strong time-frequency entanglement. Furthermore our process can be adapted to a wide range of central wavelengths."}],"language":[{"iso":"eng"}]},{"publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"issue":"12","year":"2024","citation":{"mla":"Roeder, Franz, et al. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New Journal of Physics, vol. 26, no. 12, 123025, IOP Publishing, 2024, doi:10.1088/1367-2630/ad9f98.","short":"F. Roeder, A. Gnanavel, R. Pollmann, O. Brecht, M. Stefszky, L. Padberg, C. Eigner, C. Silberhorn, B. Brecht, New Journal of Physics 26 (2024).","bibtex":"@article{Roeder_Gnanavel_Pollmann_Brecht_Stefszky_Padberg_Eigner_Silberhorn_Brecht_2024, title={Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared}, volume={26}, DOI={10.1088/1367-2630/ad9f98}, number={12123025}, journal={New Journal of Physics}, publisher={IOP Publishing}, author={Roeder, Franz and Gnanavel, Abira and Pollmann, René and Brecht, Olga and Stefszky, Michael and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Brecht, Benjamin}, year={2024} }","apa":"Roeder, F., Gnanavel, A., Pollmann, R., Brecht, O., Stefszky, M., Padberg, L., Eigner, C., Silberhorn, C., & Brecht, B. (2024). Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics, 26(12), Article 123025. https://doi.org/10.1088/1367-2630/ad9f98","chicago":"Roeder, Franz, Abira Gnanavel, René Pollmann, Olga Brecht, Michael Stefszky, Laura Padberg, Christof Eigner, Christine Silberhorn, and Benjamin Brecht. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New Journal of Physics 26, no. 12 (2024). https://doi.org/10.1088/1367-2630/ad9f98.","ieee":"F. Roeder et al., “Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared,” New Journal of Physics, vol. 26, no. 12, Art. no. 123025, 2024, doi: 10.1088/1367-2630/ad9f98.","ama":"Roeder F, Gnanavel A, Pollmann R, et al. Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics. 2024;26(12). doi:10.1088/1367-2630/ad9f98"},"intvolume":" 26","publisher":"IOP Publishing","date_updated":"2025-12-19T11:36:36Z","author":[{"last_name":"Roeder","id":"88149","full_name":"Roeder, Franz","first_name":"Franz"},{"full_name":"Gnanavel, Abira","last_name":"Gnanavel","first_name":"Abira"},{"id":"78890","full_name":"Pollmann, René","last_name":"Pollmann","first_name":"René"},{"last_name":"Brecht","full_name":"Brecht, Olga","first_name":"Olga"},{"first_name":"Michael","id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky"},{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin"}],"date_created":"2024-12-27T19:01:14Z","volume":26,"title":"Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared","doi":"10.1088/1367-2630/ad9f98","type":"journal_article","publication":"New Journal of Physics","abstract":[{"text":"The latest applications in ultrafast quantum metrology require bright, broadband bi-photon sources with one of the photons in the mid-infrared and the other in the visible to near infrared. However, existing sources based on bulk crystals are limited in brightness due to the short interaction length and only allow for limited dispersion engineering. Here, we present an integrated PDC source based on a Ti:LiNbO3 waveguide that generates broadband bi-photons with central wavelengths at 860 nm and 2800 nm. Their spectral bandwidth exceeds 25 THz and is achieved by simultaneous matching of the group velocities (GVs) and cancellation of GV dispersion for the signal and idler field. We provide an intuitive understanding of the process by studying our source’s behavior at different temperatures and pump wavelengths, which agrees well with simulations.","lang":"eng"}],"status":"public","project":[{"name":"MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing","_id":"571"},{"_id":"190","name":"E2TPA: Exploiting Entangled Two-Photon Absorption"}],"_id":"57862","user_id":"78890","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"article_number":"123025","article_type":"original","language":[{"iso":"eng"}]},{"abstract":[{"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.","lang":"eng"}],"publication":"Crystals","language":[{"iso":"eng"}],"keyword":["Inorganic Chemistry","Condensed Matter Physics","General Materials Science","General Chemical Engineering"],"year":"2023","issue":"10","quality_controlled":"1","title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","date_created":"2023-10-11T09:10:53Z","publisher":"MDPI AG","status":"public","type":"journal_article","funded_apc":"1","article_number":"1423","user_id":"22501","department":[{"_id":"169"}],"project":[{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","grant_number":"231447078"},{"name":"TRR 142 - B: TRR 142 - Project Area B","_id":"55"},{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266","grant_number":"PROFILNRW-2020-067"}],"_id":"47997","citation":{"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={10.3390/cryst13101423}, 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} }","short":"S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10), Article 1423. https://doi.org/10.3390/cryst13101423","ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423","ieee":"S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023, doi: 10.3390/cryst13101423.","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.” Crystals 13, no. 10 (2023). https://doi.org/10.3390/cryst13101423."},"intvolume":" 13","publication_status":"published","publication_identifier":{"issn":["2073-4352"]},"main_file_link":[{"url":"https://doi.org/10.3390/cryst13101423","open_access":"1"}],"doi":"10.3390/cryst13101423","author":[{"last_name":"Neufeld","full_name":"Neufeld, Sergej","first_name":"Sergej"},{"id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","first_name":"Uwe"},{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"full_name":"Berth, Gerhard","id":"53","last_name":"Berth","first_name":"Gerhard"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Lukas M.","full_name":"Eng, Lukas M.","last_name":"Eng"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577"}],"volume":13,"date_updated":"2023-10-11T09:15:58Z","oa":"1"},{"title":"All optical operation of a superconducting photonic interface","doi":"10.1364/oe.492035","publisher":"Optica Publishing Group","date_updated":"2023-11-27T08:43:33Z","volume":31,"date_created":"2023-10-24T06:43:16Z","author":[{"id":"50819","full_name":"Thiele, Frederik","orcid":"0000-0003-0663-5587","last_name":"Thiele","first_name":"Frederik"},{"first_name":"Thomas","full_name":"Hummel, Thomas","id":"83846","last_name":"Hummel"},{"last_name":"McCaughan","full_name":"McCaughan, Adam N.","first_name":"Adam N."},{"last_name":"Brockmeier","id":"44807","full_name":"Brockmeier, Julian","first_name":"Julian"},{"first_name":"Maximilian","full_name":"Protte, Maximilian","id":"46170","last_name":"Protte"},{"last_name":"Quiring","full_name":"Quiring, Victor","first_name":"Victor"},{"last_name":"Lengeling","id":"44373","full_name":"Lengeling, Sebastian","first_name":"Sebastian"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Tim","last_name":"Bartley","id":"49683","full_name":"Bartley, Tim"}],"year":"2023","intvolume":" 31","citation":{"apa":"Thiele, F., Hummel, T., McCaughan, A. N., Brockmeier, J., Protte, M., Quiring, V., Lengeling, S., Eigner, C., Silberhorn, C., & Bartley, T. (2023). All optical operation of a superconducting photonic interface. Optics Express, 31(20), Article 32717. https://doi.org/10.1364/oe.492035","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).","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={10.1364/oe.492035}, 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.” Optics Express, vol. 31, no. 20, 32717, Optica Publishing Group, 2023, doi:10.1364/oe.492035.","ama":"Thiele F, Hummel T, McCaughan AN, et al. All optical operation of a superconducting photonic interface. Optics Express. 2023;31(20). doi:10.1364/oe.492035","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.” Optics Express 31, no. 20 (2023). https://doi.org/10.1364/oe.492035.","ieee":"F. Thiele et al., “All optical operation of a superconducting photonic interface,” Optics Express, vol. 31, no. 20, Art. no. 32717, 2023, doi: 10.1364/oe.492035."},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"20","keyword":["Atomic and Molecular Physics","and Optics"],"article_number":"32717","language":[{"iso":"eng"}],"_id":"48399","user_id":"50819","abstract":[{"lang":"eng","text":"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."}],"status":"public","publication":"Optics Express","type":"journal_article"},{"doi":"10.3390/cryst13101423","title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","author":[{"full_name":"Neufeld, Sergej","last_name":"Neufeld","first_name":"Sergej"},{"id":"171","full_name":"Gerstmann, Uwe","last_name":"Gerstmann","orcid":"0000-0002-4476-223X","first_name":"Uwe"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"full_name":"Eigner, Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"id":"53","full_name":"Berth, Gerhard","last_name":"Berth","first_name":"Gerhard"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."},{"first_name":"Wolf Gero","full_name":"Schmidt, Wolf Gero","id":"468","last_name":"Schmidt","orcid":"0000-0002-2717-5076"},{"orcid":"0000-0003-4682-4577","last_name":"Rüsing","id":"22501","full_name":"Rüsing, Michael","first_name":"Michael"}],"date_created":"2024-06-24T06:15:00Z","volume":13,"date_updated":"2024-06-24T06:30:23Z","publisher":"MDPI AG","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).","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.","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={10.3390/cryst13101423}, 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} }","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10), Article 1423. https://doi.org/10.3390/cryst13101423","ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423","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.” Crystals 13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.","ieee":"S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023, doi: 10.3390/cryst13101423."},"intvolume":" 13","year":"2023","issue":"10","publication_status":"published","publication_identifier":{"issn":["2073-4352"]},"language":[{"iso":"eng"}],"article_number":"1423","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"288"},{"_id":"230"},{"_id":"429"}],"project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","grant_number":"231447078"}],"_id":"54852","status":"public","abstract":[{"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.","lang":"eng"}],"type":"journal_article","publication":"Crystals"},{"title":"Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras","doi":"10.1103/physrevapplied.19.014072","publisher":"American Physical Society (APS)","date_updated":"2023-02-15T10:51:33Z","date_created":"2023-02-15T10:50:17Z","author":[{"first_name":"Carolin","last_name":"Lüders","full_name":"Lüders, Carolin"},{"last_name":"Gil-Lopez","full_name":"Gil-Lopez, Jano","first_name":"Jano"},{"first_name":"Markus","last_name":"Allgaier","full_name":"Allgaier, Markus"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Marc","last_name":"Aßmann","full_name":"Aßmann, Marc"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"full_name":"Bayer, Manfred","last_name":"Bayer","first_name":"Manfred"}],"volume":19,"year":"2023","citation":{"mla":"Lüders, Carolin, et al. “Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras.” Physical Review Applied, vol. 19, no. 1, 014072, American Physical Society (APS), 2023, doi:10.1103/physrevapplied.19.014072.","short":"C. Lüders, J. Gil-Lopez, M. Allgaier, B. Brecht, M. Aßmann, C. Silberhorn, M. Bayer, Physical Review Applied 19 (2023).","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={10.1103/physrevapplied.19.014072}, 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., & Bayer, M. (2023). Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras. Physical Review Applied, 19(1), Article 014072. https://doi.org/10.1103/physrevapplied.19.014072","ama":"Lüders C, Gil-Lopez J, Allgaier M, et al. Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras. Physical Review Applied. 2023;19(1). doi:10.1103/physrevapplied.19.014072","ieee":"C. Lüders et al., “Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras,” Physical Review Applied, vol. 19, no. 1, Art. no. 014072, 2023, doi: 10.1103/physrevapplied.19.014072.","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.” Physical Review Applied 19, no. 1 (2023). https://doi.org/10.1103/physrevapplied.19.014072."},"intvolume":" 19","publication_status":"published","publication_identifier":{"issn":["2331-7019"]},"issue":"1","article_number":"014072","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}],"project":[{"name":"TRR 142 - C01: TRR 142 - Subproject C01","_id":"71"}],"_id":"42158","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"status":"public","type":"journal_article","publication":"Physical Review Applied"},{"publication_identifier":{"issn":["1041-1135","1941-0174"]},"publication_status":"published","issue":"14","year":"2023","page":"769-772","intvolume":" 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.","mla":"Kruse, Stephan, et al. “A Pulsed Lidar System With Ultimate Quantum Range Accuracy.” IEEE Photonics Technology Letters, vol. 35, no. 14, Institute of Electrical and Electronics Engineers (IEEE), 2023, pp. 769–72, doi:10.1109/lpt.2023.3277515.","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={10.1109/lpt.2023.3277515}, 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} }","apa":"Kruse, S., Serino, L., Folge, P. F., Echeverria Oviedo, D., Bhattacharjee, A., Stefszky, M., Scheytt, J. C., Brecht, B., & Silberhorn, C. (2023). A Pulsed Lidar System With Ultimate Quantum Range Accuracy. IEEE Photonics Technology Letters, 35(14), 769–772. https://doi.org/10.1109/lpt.2023.3277515","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.” IEEE Photonics Technology Letters 35, no. 14 (2023): 769–72. https://doi.org/10.1109/lpt.2023.3277515.","ieee":"S. Kruse et al., “A Pulsed Lidar System With Ultimate Quantum Range Accuracy,” IEEE Photonics Technology Letters, vol. 35, no. 14, pp. 769–772, 2023, doi: 10.1109/lpt.2023.3277515.","ama":"Kruse S, Serino L, Folge PF, et al. A Pulsed Lidar System With Ultimate Quantum Range Accuracy. IEEE Photonics Technology Letters. 2023;35(14):769-772. doi:10.1109/lpt.2023.3277515"},"date_updated":"2023-06-06T10:13:05Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","volume":35,"author":[{"id":"38254","full_name":"Kruse, Stephan","last_name":"Kruse","first_name":"Stephan"},{"first_name":"Laura","full_name":"Serino, Laura","id":"88242","last_name":"Serino"},{"first_name":"Patrick Fabian","last_name":"Folge","id":"88605","full_name":"Folge, Patrick Fabian"},{"first_name":"Dana","last_name":"Echeverria Oviedo","full_name":"Echeverria Oviedo, Dana"},{"full_name":"Bhattacharjee, Abhinandan","last_name":"Bhattacharjee","first_name":"Abhinandan"},{"last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777","first_name":"Michael"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","id":"37144","full_name":"Scheytt, J. Christoph"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2023-06-06T10:09:05Z","title":"A Pulsed Lidar System With Ultimate Quantum Range Accuracy","doi":"10.1109/lpt.2023.3277515","publication":"IEEE Photonics Technology Letters","type":"journal_article","status":"public","_id":"45485","department":[{"_id":"15"},{"_id":"58"},{"_id":"623"},{"_id":"230"},{"_id":"288"}],"user_id":"27150","keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"language":[{"iso":"eng"}]},{"year":"2023","citation":{"ama":"Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. Optics Express. 2023;31(14). doi:10.1364/oe.484126","ieee":"S. Babel et al., “Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler,” Optics Express, vol. 31, no. 14, Art. no. 23140, 2023, doi: 10.1364/oe.484126.","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.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.484126.","apa":"Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F., Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., & Silberhorn, C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. Optics Express, 31(14), Article 23140. https://doi.org/10.1364/oe.484126","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={10.1364/oe.484126}, 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} }","mla":"Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” Optics Express, vol. 31, no. 14, 23140, Optica Publishing Group, 2023, doi:10.1364/oe.484126.","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)."},"intvolume":" 31","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"issue":"14","title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","doi":"10.1364/oe.484126","publisher":"Optica Publishing Group","date_updated":"2023-07-05T07:58:31Z","date_created":"2023-07-03T14:08:36Z","author":[{"last_name":"Babel","orcid":"https://orcid.org/0000-0002-1568-2580","full_name":"Babel, Silia","id":"63231","first_name":"Silia"},{"first_name":"Laura","last_name":"Bollmers","full_name":"Bollmers, Laura","id":"61375"},{"first_name":"Marcello","last_name":"Massaro","orcid":"0000-0002-2539-7652","id":"59545","full_name":"Massaro, Marcello"},{"last_name":"Luo","orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong","id":"36389","first_name":"Kai Hong"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"first_name":"Federico","last_name":"Pegoraro","full_name":"Pegoraro, Federico","id":"88928"},{"id":"68236","full_name":"Held, Philip","last_name":"Held","first_name":"Philip"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"volume":31,"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."}],"status":"public","type":"journal_article","publication":"Optics Express","article_number":"23140","keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"_id":"45850","user_id":"63231","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}]},{"abstract":[{"text":"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.","lang":"eng"}],"publication":"Optics Letters","keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"year":"2023","quality_controlled":"1","issue":"11","title":"Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing","publisher":"Optica Publishing Group","date_created":"2023-07-25T10:35:24Z","status":"public","type":"journal_article","article_type":"original","article_number":"2999","_id":"46138","project":[{"name":"UNIQORN: UNIQORN - Affordable Quantum Communication for Everyone - EU Quantum Flagship Project","_id":"218"}],"department":[{"_id":"230"},{"_id":"623"},{"_id":"288"}],"user_id":"216","intvolume":" 48","citation":{"ama":"Domeneguetti R, Stefszky M, Herrmann H, et al. Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. Optics Letters. 2023;48(11). doi:10.1364/ol.486654","ieee":"R. Domeneguetti et al., “Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing,” Optics Letters, vol. 48, no. 11, Art. no. 2999, 2023, doi: 10.1364/ol.486654.","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.” Optics Letters 48, no. 11 (2023). https://doi.org/10.1364/ol.486654.","apa":"Domeneguetti, R., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., & Gehring, T. (2023). Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. Optics Letters, 48(11), Article 2999. https://doi.org/10.1364/ol.486654","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={10.1364/ol.486654}, 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} }","mla":"Domeneguetti, Renato, et al. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” Optics Letters, vol. 48, no. 11, 2999, Optica Publishing Group, 2023, doi:10.1364/ol.486654.","short":"R. Domeneguetti, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, Optics Letters 48 (2023)."},"publication_identifier":{"issn":["0146-9592","1539-4794"]},"publication_status":"published","doi":"10.1364/ol.486654","date_updated":"2023-07-25T10:58:05Z","volume":48,"author":[{"first_name":"Renato","last_name":"Domeneguetti","full_name":"Domeneguetti, Renato"},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"last_name":"Andersen","full_name":"Andersen, Ulrik L.","first_name":"Ulrik L."},{"first_name":"Jonas S.","last_name":"Neergaard-Nielsen","full_name":"Neergaard-Nielsen, Jonas S."},{"first_name":"Tobias","full_name":"Gehring, Tobias","last_name":"Gehring"}]},{"citation":{"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.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.487581.","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,” Optics Express, vol. 31, no. 14, Art. no. 22685, 2023, doi: 10.1364/oe.487581.","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. Optics Express. 2023;31(14). doi:10.1364/oe.487581","short":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express 31 (2023).","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={10.1364/oe.487581}, 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.” Optics Express, vol. 31, no. 14, 22685, Optica Publishing Group, 2023, doi:10.1364/oe.487581.","apa":"Kießler, C., Conradi, H., Kleinert, M., Quiring, V., Herrmann, H., & Silberhorn, C. (2023). Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. Optics Express, 31(14), Article 22685. https://doi.org/10.1364/oe.487581"},"intvolume":" 31","year":"2023","issue":"14","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"doi":"10.1364/oe.487581","title":"Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology","author":[{"first_name":"Christian","id":"44252","full_name":"Kießler, Christian","last_name":"Kießler"},{"first_name":"Hauke","last_name":"Conradi","full_name":"Conradi, Hauke"},{"first_name":"Moritz","full_name":"Kleinert, Moritz","last_name":"Kleinert"},{"last_name":"Quiring","full_name":"Quiring, Viktor","first_name":"Viktor"},{"last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216","first_name":"Harald"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2023-08-23T07:20:06Z","volume":31,"date_updated":"2023-08-23T07:25:37Z","publisher":"Optica Publishing Group","status":"public","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"}],"type":"journal_article","publication":"Optics Express","language":[{"iso":"eng"}],"article_number":"22685","article_type":"original","keyword":["Atomic and Molecular Physics","and Optics"],"user_id":"44252","_id":"46644"},{"publisher":"SPIE","date_created":"2023-03-21T12:28:31Z","title":"Tailoring the directive nature of optical waveguide antennas","year":"2023","ddc":["530"],"keyword":["tet_topic_opticalantenna"],"language":[{"iso":"eng"}],"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"}],"file":[{"date_updated":"2023-03-22T09:25:57Z","date_created":"2023-03-22T09:25:57Z","creator":"fossie","file_size":1426599,"file_id":"43062","file_name":"2023-01 Poster Photonics West Henna OWA_A0.pdf","access_level":"local","content_type":"application/pdf","relation":"main_file"}],"date_updated":"2025-05-23T05:57:14Z","author":[{"last_name":"Farheen","orcid":"0000-0001-7730-3489","full_name":"Farheen, Henna","id":"53444","first_name":"Henna"},{"last_name":"Yan","full_name":"Yan, Lok-Yee","first_name":"Lok-Yee"},{"first_name":"Till","full_name":"Leuteritz, Till","last_name":"Leuteritz"},{"first_name":"Siqi","full_name":"Qiao, Siqi","last_name":"Qiao"},{"first_name":"Florian","last_name":"Spreyer","full_name":"Spreyer, Florian"},{"last_name":"Schlickriede","full_name":"Schlickriede, Christian","first_name":"Christian"},{"full_name":"Quiring, Viktor","last_name":"Quiring","first_name":"Viktor"},{"first_name":"Christof","last_name":"Eigner","full_name":"Eigner, Christof"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"orcid":"0000-0002-8662-1101","last_name":"Zentgraf","full_name":"Zentgraf, Thomas","id":"30525","first_name":"Thomas"},{"full_name":"Linden, Stefan","last_name":"Linden","first_name":"Stefan"},{"first_name":"Viktor","last_name":"Myroshnychenko","full_name":"Myroshnychenko, Viktor","id":"46371"},{"first_name":"Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens"}],"doi":"10.1117/12.2658921","publication_status":"published","has_accepted_license":"1","citation":{"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. Integrated Optics: Devices, Materials, and Technologies XXVII. SPIE; 2023:124241E. doi:10.1117/12.2658921","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 Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, 124241E. SPIE, 2023. https://doi.org/10.1117/12.2658921.","ieee":"H. Farheen et al., “Tailoring the directive nature of optical waveguide antennas,” in Integrated Optics: Devices, Materials, and Technologies XXVII, 2023, p. 124241E, doi: 10.1117/12.2658921.","mla":"Farheen, Henna, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241E, doi:10.1117/12.2658921.","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={10.1117/12.2658921}, 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} }","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.","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., & Förstner, J. (2023). Tailoring the directive nature of optical waveguide antennas. In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII (p. 124241E). SPIE. https://doi.org/10.1117/12.2658921"},"page":"124241E","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","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)","_id":"65","grant_number":"231447078"}],"_id":"43051","user_id":"30525","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"file_date_updated":"2023-03-22T09:25:57Z","type":"conference","editor":[{"last_name":"García-Blanco","full_name":"García-Blanco, Sonia M.","first_name":"Sonia M."},{"last_name":"Cheben","full_name":"Cheben, Pavel","first_name":"Pavel"}],"status":"public"},{"doi":"10.1364/cleo_at.2023.jw2a.57","title":"Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance","author":[{"full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"first_name":"Viktor","full_name":"Quiring, Viktor","last_name":"Quiring"},{"id":"58349","full_name":"Bocchini, Adriana","orcid":"0000-0002-2134-3075","last_name":"Bocchini","first_name":"Adriana"},{"id":"55095","full_name":"Santandrea, Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea","first_name":"Matteo"},{"last_name":"Gerstmann","orcid":"0000-0002-4476-223X","id":"171","full_name":"Gerstmann, Uwe","first_name":"Uwe"},{"first_name":"Wolf Gero","full_name":"Schmidt, Wolf Gero","id":"468","orcid":"0000-0002-2717-5076","last_name":"Schmidt"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2025-09-18T12:06:19Z","date_updated":"2025-09-18T12:08:56Z","publisher":"Optica Publishing Group","citation":{"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 CLEO 2023. Optica Publishing Group, 2023. https://doi.org/10.1364/cleo_at.2023.jw2a.57.","ieee":"C. Eigner et al., “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance,” 2023, doi: 10.1364/cleo_at.2023.jw2a.57.","ama":"Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. In: CLEO 2023. Optica Publishing Group; 2023. doi:10.1364/cleo_at.2023.jw2a.57","apa":"Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt, W. G., & Silberhorn, C. (2023). Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. CLEO 2023. https://doi.org/10.1364/cleo_at.2023.jw2a.57","mla":"Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” CLEO 2023, Optica Publishing Group, 2023, doi:10.1364/cleo_at.2023.jw2a.57.","bibtex":"@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023, title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance}, DOI={10.1364/cleo_at.2023.jw2a.57}, 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} }","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."},"year":"2023","publication_status":"published","language":[{"iso":"eng"}],"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"27"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"name":"TRR 142 - Project Area B","_id":"55"},{"name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","_id":"168"},{"_id":"166","name":"TRR 142 - Subproject A11"}],"_id":"61362","status":"public","abstract":[{"text":"We study the interaction of gray tracking and DC ionic conductivity in Potassium Titanyl Phosphate (KTiOPO4, KTP) and present a novel way to reduce conductivity via a potassium nitrate treatment improving the device quality.","lang":"eng"}],"type":"conference","publication":"CLEO 2023"},{"publication_status":"published","issue":"1","year":"2023","citation":{"ama":"Barkhofen S, Brecht B, Silberhorn C. Verschränkung wie am Fließband. Physik in unserer Zeit. 2023;54(1):10-11. doi:https://doi.org/10.1002/piuz.202370107","chicago":"Barkhofen, Sonja, Benjamin Brecht, and Christine Silberhorn. “Verschränkung wie am Fließband.” Physik in unserer Zeit 54, no. 1 (2023): 10–11. https://doi.org/10.1002/piuz.202370107.","ieee":"S. Barkhofen, B. Brecht, and C. Silberhorn, “Verschränkung wie am Fließband,” Physik in unserer Zeit, vol. 54, no. 1, pp. 10–11, 2023, doi: https://doi.org/10.1002/piuz.202370107.","apa":"Barkhofen, S., Brecht, B., & Silberhorn, C. (2023). Verschränkung wie am Fließband. Physik in unserer Zeit, 54(1), 10–11. https://doi.org/10.1002/piuz.202370107","short":"S. Barkhofen, B. Brecht, C. Silberhorn, Physik in unserer Zeit 54 (2023) 10–11.","mla":"Barkhofen, Sonja, et al. “Verschränkung wie am Fließband.” Physik in unserer Zeit, vol. 54, no. 1, Wiley, 2023, pp. 10–11, doi:https://doi.org/10.1002/piuz.202370107.","bibtex":"@article{Barkhofen_Brecht_Silberhorn_2023, title={Verschränkung wie am Fließband}, volume={54}, DOI={https://doi.org/10.1002/piuz.202370107}, number={1}, journal={Physik in unserer Zeit}, publisher={Wiley}, author={Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2023}, pages={10–11} }"},"intvolume":" 54","page":"10-11","publisher":"Wiley","date_updated":"2025-12-04T13:36:42Z","date_created":"2023-01-24T08:04:47Z","author":[{"first_name":"Sonja","last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"volume":54,"title":"Verschränkung wie am Fließband","doi":"https://doi.org/10.1002/piuz.202370107","type":"journal_article","publication":"Physik in unserer Zeit","status":"public","_id":"38541","user_id":"48188","department":[{"_id":"623"},{"_id":"15"}],"language":[{"iso":"ger"}]},{"year":"2023","citation":{"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: Conference on Lasers and Electro-Optics (CLEO) 2023. Optica Publishing Group; 2023. doi:https://doi.org/10.1364/CLEO_SI.2023.SF1P.6","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: https://doi.org/10.1364/CLEO_SI.2023.SF1P.6.","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 Conference on Lasers and Electro-Optics (CLEO) 2023. Optica Publishing Group, 2023. https://doi.org/10.1364/CLEO_SI.2023.SF1P.6.","apa":"Kress, C., Schwabe, T., Silberhorn, C., & Scheytt, J. C. (2023). Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform. Conference on Lasers and Electro-Optics (CLEO) 2023. Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA. https://doi.org/10.1364/CLEO_SI.2023.SF1P.6","short":"C. Kress, T. Schwabe, C. Silberhorn, J.C. Scheytt, in: Conference on Lasers and Electro-Optics (CLEO) 2023, Optica Publishing Group, 2023.","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={https://doi.org/10.1364/CLEO_SI.2023.SF1P.6}, 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.” Conference on Lasers and Electro-Optics (CLEO) 2023, Optica Publishing Group, 2023, doi:https://doi.org/10.1364/CLEO_SI.2023.SF1P.6."},"title":"Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform","conference":{"end_date":"2023-05-12","location":"San Jose, CA, USA","name":" Conference on Lasers and Electro-Optics (CLEO)","start_date":"2023-05-08"},"doi":"https://doi.org/10.1364/CLEO_SI.2023.SF1P.6","publisher":"Optica Publishing Group","date_updated":"2025-12-12T11:26:12Z","author":[{"id":"13256","full_name":"Kress, Christian","last_name":"Kress","orcid":"0000-0002-4403-2237","first_name":"Christian"},{"last_name":"Schwabe","full_name":"Schwabe, Tobias","id":"39217","first_name":"Tobias"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","id":"37144","full_name":"Scheytt, J. Christoph","first_name":"J. Christoph"}],"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"}],"status":"public","type":"conference","publication":" Conference on Lasers and Electro-Optics (CLEO) 2023","language":[{"iso":"eng"}],"project":[{"name":"PONyDAC: PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC","_id":"302"},{"_id":"175","name":"TRR 142; TP C11: Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI"}],"_id":"45578","user_id":"13256","department":[{"_id":"58"},{"_id":"230"},{"_id":"623"}]},{"title":"Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States","doi":"10.1103/prxquantum.4.020306","publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:15:18Z","date_created":"2023-04-20T12:38:23Z","author":[{"last_name":"Serino","full_name":"Serino, Laura","id":"88242","first_name":"Laura"},{"first_name":"Jano","full_name":"Gil López, Jano","id":"51223","last_name":"Gil López"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"last_name":"Ricken","full_name":"Ricken, Raimund","first_name":"Raimund"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"volume":4,"year":"2023","citation":{"mla":"Serino, Laura, et al. “Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States.” PRX Quantum, vol. 4, no. 2, 020306, American Physical Society (APS), 2023, doi:10.1103/prxquantum.4.020306.","short":"L. Serino, J. Gil López, M. Stefszky, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 4 (2023).","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={10.1103/prxquantum.4.020306}, 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} }","apa":"Serino, L., Gil López, J., Stefszky, M., Ricken, R., Eigner, C., Brecht, B., & Silberhorn, C. (2023). Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States. PRX Quantum, 4(2), Article 020306. https://doi.org/10.1103/prxquantum.4.020306","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. PRX Quantum. 2023;4(2). doi:10.1103/prxquantum.4.020306","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.” PRX Quantum 4, no. 2 (2023). https://doi.org/10.1103/prxquantum.4.020306.","ieee":"L. Serino et al., “Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States,” PRX Quantum, vol. 4, no. 2, Art. no. 020306, 2023, doi: 10.1103/prxquantum.4.020306."},"intvolume":" 4","publication_status":"published","publication_identifier":{"issn":["2691-3399"]},"issue":"2","article_number":"020306","keyword":["General Physics and Astronomy","Mathematical Physics","Applied Mathematics","Electronic","Optical and Magnetic Materials","Electrical and Electronic Engineering","General Computer Science"],"language":[{"iso":"eng"}],"_id":"44081","user_id":"27150","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"status":"public","type":"journal_article","publication":"PRX Quantum"},{"date_updated":"2026-01-09T09:49:31Z","oa":"1","author":[{"first_name":"Federico","last_name":"Pegoraro","id":"88928","full_name":"Pegoraro, Federico"},{"last_name":"Held","full_name":"Held, Philip","id":"68236","first_name":"Philip"},{"last_name":"Barkhofen","full_name":"Barkhofen, Sonja","id":"48188","first_name":"Sonja"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"volume":98,"main_file_link":[{"open_access":"1","url":"https://iopscience.iop.org/article/10.1088/1402-4896/acbcaa"}],"doi":"10.1088/1402-4896/acbcaa","publication_status":"published","publication_identifier":{"issn":["0031-8949","1402-4896"]},"citation":{"ama":"Pegoraro F, Held P, Barkhofen S, Brecht B, Silberhorn C. Dynamic conditioning of two particle discrete-time quantum walks. Physica Scripta. 2023;98(3). doi:10.1088/1402-4896/acbcaa","ieee":"F. Pegoraro, P. Held, S. Barkhofen, B. Brecht, and C. Silberhorn, “Dynamic conditioning of two particle discrete-time quantum walks,” Physica Scripta, vol. 98, no. 3, Art. no. 034005, 2023, doi: 10.1088/1402-4896/acbcaa.","chicago":"Pegoraro, Federico, Philip Held, Sonja Barkhofen, Benjamin Brecht, and Christine Silberhorn. “Dynamic Conditioning of Two Particle Discrete-Time Quantum Walks.” Physica Scripta 98, no. 3 (2023). https://doi.org/10.1088/1402-4896/acbcaa.","apa":"Pegoraro, F., Held, P., Barkhofen, S., Brecht, B., & Silberhorn, C. (2023). Dynamic conditioning of two particle discrete-time quantum walks. Physica Scripta, 98(3), Article 034005. https://doi.org/10.1088/1402-4896/acbcaa","mla":"Pegoraro, Federico, et al. “Dynamic Conditioning of Two Particle Discrete-Time Quantum Walks.” Physica Scripta, vol. 98, no. 3, 034005, IOP Publishing, 2023, doi:10.1088/1402-4896/acbcaa.","bibtex":"@article{Pegoraro_Held_Barkhofen_Brecht_Silberhorn_2023, title={Dynamic conditioning of two particle discrete-time quantum walks}, volume={98}, DOI={10.1088/1402-4896/acbcaa}, 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} }","short":"F. Pegoraro, P. Held, S. Barkhofen, B. Brecht, C. Silberhorn, Physica Scripta 98 (2023)."},"intvolume":" 98","_id":"42648","user_id":"68236","department":[{"_id":"623"},{"_id":"15"},{"_id":"288"},{"_id":"169"}],"article_number":"034005","article_type":"original","type":"journal_article","status":"public","publisher":"IOP Publishing","date_created":"2023-03-02T09:53:59Z","title":"Dynamic conditioning of two particle discrete-time quantum walks","issue":"3","year":"2023","language":[{"iso":"eng"}],"publication":"Physica Scripta","abstract":[{"lang":"eng","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."}]},{"doi":"10.1364/optica.445576","title":"Cryogenic integrated spontaneous parametric down-conversion","volume":9,"date_created":"2022-03-16T08:53:22Z","author":[{"first_name":"Nina Amelie","last_name":"Lange","full_name":"Lange, Nina Amelie","id":"56843"},{"last_name":"Höpker","full_name":"Höpker, Jan Philipp","id":"33913","first_name":"Jan Philipp"},{"full_name":"Ricken, Raimund","last_name":"Ricken","first_name":"Raimund"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"first_name":"Christof","id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"date_updated":"2023-01-12T13:42:23Z","publisher":"The Optical Society","intvolume":" 9","citation":{"apa":"Lange, N. A., Höpker, J. P., Ricken, R., Quiring, V., Eigner, C., Silberhorn, C., & Bartley, T. (2022). Cryogenic integrated spontaneous parametric down-conversion. Optica, 9(1), Article 108. https://doi.org/10.1364/optica.445576","bibtex":"@article{Lange_Höpker_Ricken_Quiring_Eigner_Silberhorn_Bartley_2022, title={Cryogenic integrated spontaneous parametric down-conversion}, volume={9}, DOI={10.1364/optica.445576}, number={1108}, journal={Optica}, publisher={The Optical Society}, author={Lange, Nina Amelie and Höpker, Jan Philipp and Ricken, Raimund and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}, year={2022} }","mla":"Lange, Nina Amelie, et al. “Cryogenic Integrated Spontaneous Parametric Down-Conversion.” Optica, vol. 9, no. 1, 108, The Optical Society, 2022, doi:10.1364/optica.445576.","short":"N.A. Lange, J.P. Höpker, R. Ricken, V. Quiring, C. Eigner, C. Silberhorn, T. Bartley, Optica 9 (2022).","ama":"Lange NA, Höpker JP, Ricken R, et al. Cryogenic integrated spontaneous parametric down-conversion. Optica. 2022;9(1). doi:10.1364/optica.445576","chicago":"Lange, Nina Amelie, Jan Philipp Höpker, Raimund Ricken, Viktor Quiring, Christof Eigner, Christine Silberhorn, and Tim Bartley. “Cryogenic Integrated Spontaneous Parametric Down-Conversion.” Optica 9, no. 1 (2022). https://doi.org/10.1364/optica.445576.","ieee":"N. A. Lange et al., “Cryogenic integrated spontaneous parametric down-conversion,” Optica, vol. 9, no. 1, Art. no. 108, 2022, doi: 10.1364/optica.445576."},"year":"2022","issue":"1","publication_identifier":{"issn":["2334-2536"]},"publication_status":"published","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"article_number":"108","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"}],"user_id":"33913","_id":"30342","status":"public","publication":"Optica","type":"journal_article"},{"status":"public","type":"journal_article","article_number":"034004","user_id":"83846","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"}],"_id":"33672","citation":{"ieee":"F. Thiele et al., “Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides,” Journal of Physics: Photonics, vol. 4, no. 3, Art. no. 034004, 2022, doi: 10.1088/2515-7647/ac6c63.","chicago":"Thiele, Frederik, Felix vom Bruch, Julian Brockmeier, Maximilian Protte, Thomas Hummel, Raimund Ricken, Viktor Quiring, et al. “Cryogenic Electro-Optic Modulation in Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics 4, no. 3 (2022). https://doi.org/10.1088/2515-7647/ac6c63.","ama":"Thiele F, vom Bruch F, Brockmeier J, et al. Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics. 2022;4(3). doi:10.1088/2515-7647/ac6c63","mla":"Thiele, Frederik, et al. “Cryogenic Electro-Optic Modulation in Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics, vol. 4, no. 3, 034004, IOP Publishing, 2022, doi:10.1088/2515-7647/ac6c63.","short":"F. Thiele, F. vom Bruch, J. Brockmeier, M. Protte, T. Hummel, R. Ricken, V. Quiring, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Journal of Physics: Photonics 4 (2022).","bibtex":"@article{Thiele_vom Bruch_Brockmeier_Protte_Hummel_Ricken_Quiring_Lengeling_Herrmann_Eigner_et al._2022, title={Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides}, volume={4}, DOI={10.1088/2515-7647/ac6c63}, number={3034004}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Thiele, Frederik and vom Bruch, Felix and Brockmeier, Julian and Protte, Maximilian and Hummel, Thomas and Ricken, Raimund and Quiring, Viktor and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and et al.}, year={2022} }","apa":"Thiele, F., vom Bruch, F., Brockmeier, J., Protte, M., Hummel, T., Ricken, R., Quiring, V., Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2022). Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics, 4(3), Article 034004. https://doi.org/10.1088/2515-7647/ac6c63"},"intvolume":" 4","publication_status":"published","publication_identifier":{"issn":["2515-7647"]},"doi":"10.1088/2515-7647/ac6c63","author":[{"full_name":"Thiele, Frederik","id":"50819","last_name":"Thiele","orcid":"0000-0003-0663-5587","first_name":"Frederik"},{"id":"71245","full_name":"vom Bruch, Felix","last_name":"vom Bruch","first_name":"Felix"},{"full_name":"Brockmeier, Julian","id":"44807","last_name":"Brockmeier","first_name":"Julian"},{"last_name":"Protte","full_name":"Protte, Maximilian","id":"46170","first_name":"Maximilian"},{"last_name":"Hummel","id":"83846","full_name":"Hummel, Thomas","first_name":"Thomas"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"first_name":"Viktor","full_name":"Quiring, Viktor","last_name":"Quiring"},{"last_name":"Lengeling","full_name":"Lengeling, Sebastian","id":"44373","first_name":"Sebastian"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"full_name":"Bartley, Tim","id":"49683","last_name":"Bartley","first_name":"Tim"}],"volume":4,"date_updated":"2023-01-12T15:16:35Z","abstract":[{"lang":"eng","text":"Abstract\r\n Lithium niobate is a promising platform for integrated quantum optics. In this platform, we aim to efficiently manipulate and detect quantum states by combining superconducting single photon detectors and modulators. The cryogenic operation of a superconducting single photon detector dictates the optimisation of the electro-optic modulators under the same operating conditions. To that end, we characterise a phase modulator, directional coupler, and polarisation converter at both ambient and cryogenic temperatures. The operation voltage \r\n \r\n \r\n \r\n V\r\n \r\n π\r\n \r\n /\r\n \r\n 2\r\n \r\n \r\n \r\n \r\n of these modulators increases, due to the decrease in the electro-optic effect, by 74% for the phase modulator, 84% for the directional coupler and 35% for the polarisation converter below 8.5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n . The phase modulator preserves its broadband nature and modulates light in the characterised wavelength range. The unbiased bar state of the directional coupler changed by a wavelength shift of 85\r\n \r\n \r\n \r\n n\r\n m\r\n \r\n \r\n \r\n while cooling the device down to 5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n . The polarisation converter uses periodic poling to phasematch the two orthogonal polarisations. The phasematched wavelength of the utilised poling changes by 112\r\n \r\n \r\n \r\n n\r\n m\r\n \r\n \r\n \r\n when cooling to 5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n ."}],"publication":"Journal of Physics: Photonics","language":[{"iso":"eng"}],"keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"year":"2022","issue":"3","title":"Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides","date_created":"2022-10-11T07:14:40Z","publisher":"IOP Publishing"},{"intvolume":" 40","page":"7485-7497","citation":{"ieee":"A. Trenti et al., “On-Chip Quantum Communication Devices,” Journal of Lightwave Technology, vol. 40, no. 23, pp. 7485–7497, 2022, doi: 10.1109/jlt.2022.3201389.","chicago":"Trenti, Alessandro, Martin Achleitner, Florian Prawits, Bernhard Schrenk, Hauke Conradi, Moritz Kleinert, Alfonso Incoronato, et al. “On-Chip Quantum Communication Devices.” Journal of Lightwave Technology 40, no. 23 (2022): 7485–97. https://doi.org/10.1109/jlt.2022.3201389.","ama":"Trenti A, Achleitner M, Prawits F, et al. On-Chip Quantum Communication Devices. Journal of Lightwave Technology. 2022;40(23):7485-7497. doi:10.1109/jlt.2022.3201389","bibtex":"@article{Trenti_Achleitner_Prawits_Schrenk_Conradi_Kleinert_Incoronato_Zanetto_Zappa_Luch_et al._2022, title={On-Chip Quantum Communication Devices}, volume={40}, DOI={10.1109/jlt.2022.3201389}, number={23}, journal={Journal of Lightwave Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Trenti, Alessandro and Achleitner, Martin and Prawits, Florian and Schrenk, Bernhard and Conradi, Hauke and Kleinert, Moritz and Incoronato, Alfonso and Zanetto, Francesco and Zappa, Franco and Luch, Ilaria Di and et al.}, year={2022}, pages={7485–7497} }","short":"A. Trenti, M. Achleitner, F. Prawits, B. Schrenk, H. Conradi, M. Kleinert, A. Incoronato, F. Zanetto, F. Zappa, I.D. Luch, O. Cirkinoglu, X. Leijtens, A. Bonardi, C. Bruynsteen, X. Yin, C. Kießler, H. Herrmann, C. Silberhorn, M. Bozzio, P. Walther, H.C. Thiel, G. Weihs, H. Hubel, Journal of Lightwave Technology 40 (2022) 7485–7497.","mla":"Trenti, Alessandro, et al. “On-Chip Quantum Communication Devices.” Journal of Lightwave Technology, vol. 40, no. 23, Institute of Electrical and Electronics Engineers (IEEE), 2022, pp. 7485–97, doi:10.1109/jlt.2022.3201389.","apa":"Trenti, A., Achleitner, M., Prawits, F., Schrenk, B., Conradi, H., Kleinert, M., Incoronato, A., Zanetto, F., Zappa, F., Luch, I. D., Cirkinoglu, O., Leijtens, X., Bonardi, A., Bruynsteen, C., Yin, X., Kießler, C., Herrmann, H., Silberhorn, C., Bozzio, M., … Hubel, H. (2022). On-Chip Quantum Communication Devices. Journal of Lightwave Technology, 40(23), 7485–7497. https://doi.org/10.1109/jlt.2022.3201389"},"year":"2022","issue":"23","publication_identifier":{"issn":["0733-8724","1558-2213"]},"publication_status":"published","doi":"10.1109/jlt.2022.3201389","title":"On-Chip Quantum Communication Devices","volume":40,"date_created":"2023-01-24T07:41:40Z","author":[{"first_name":"Alessandro","full_name":"Trenti, Alessandro","last_name":"Trenti"},{"last_name":"Achleitner","full_name":"Achleitner, Martin","first_name":"Martin"},{"full_name":"Prawits, Florian","last_name":"Prawits","first_name":"Florian"},{"first_name":"Bernhard","last_name":"Schrenk","full_name":"Schrenk, Bernhard"},{"first_name":"Hauke","last_name":"Conradi","full_name":"Conradi, Hauke"},{"full_name":"Kleinert, Moritz","last_name":"Kleinert","first_name":"Moritz"},{"last_name":"Incoronato","full_name":"Incoronato, Alfonso","first_name":"Alfonso"},{"last_name":"Zanetto","full_name":"Zanetto, Francesco","first_name":"Francesco"},{"last_name":"Zappa","full_name":"Zappa, Franco","first_name":"Franco"},{"first_name":"Ilaria Di","full_name":"Luch, Ilaria Di","last_name":"Luch"},{"first_name":"Ozan","last_name":"Cirkinoglu","full_name":"Cirkinoglu, Ozan"},{"full_name":"Leijtens, Xaveer","last_name":"Leijtens","first_name":"Xaveer"},{"first_name":"Antonio","full_name":"Bonardi, Antonio","last_name":"Bonardi"},{"first_name":"Cedric","last_name":"Bruynsteen","full_name":"Bruynsteen, Cedric"},{"first_name":"Xin","full_name":"Yin, Xin","last_name":"Yin"},{"id":"44252","full_name":"Kießler, Christian","last_name":"Kießler","first_name":"Christian"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Bozzio, Mathieu","last_name":"Bozzio","first_name":"Mathieu"},{"last_name":"Walther","full_name":"Walther, Philip","first_name":"Philip"},{"full_name":"Thiel, Hannah C.","last_name":"Thiel","first_name":"Hannah C."},{"full_name":"Weihs, Gregor","last_name":"Weihs","first_name":"Gregor"},{"first_name":"Hannes","full_name":"Hubel, Hannes","last_name":"Hubel"}],"date_updated":"2023-01-26T09:10:58Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","status":"public","publication":"Journal of Lightwave Technology","type":"journal_article","language":[{"iso":"eng"}],"keyword":["General Engineering"],"user_id":"44252","_id":"38532"}]