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Long <i>et al.</i>, “Helical Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity,” <i>Advanced Science</i>, vol. 9, no. 29, Art. no. 2203588, 2022, doi: <a href=\"https://doi.org/10.1002/advs.202203588\">10.1002/advs.202203588</a>."},"intvolume":"         9"},{"status":"public","type":"journal_article","publication":"Nature Communications","language":[{"iso":"eng"}],"article_number":"3785","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"35"}],"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A4: TRR 142 - Subproject A4","_id":"61"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"_id":"32310","citation":{"bibtex":"@article{Li_Ma_Zhai_Gao_Dai_Schumacher_Gao_2022, title={Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature}, volume={13}, DOI={<a href=\"https://doi.org/10.1038/s41467-022-31529-4\">10.1038/s41467-022-31529-4</a>}, number={13785}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Li, Yao and Ma, Xuekai and Zhai, Xiaokun and Gao, Meini and Dai, Haitao and Schumacher, Stefan and Gao, Tingge}, year={2022} }","short":"Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, T. Gao, Nature Communications 13 (2022).","mla":"Li, Yao, et al. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling at Room Temperature.” <i>Nature Communications</i>, vol. 13, no. 1, 3785, Springer Science and Business Media LLC, 2022, doi:<a href=\"https://doi.org/10.1038/s41467-022-31529-4\">10.1038/s41467-022-31529-4</a>.","apa":"Li, Y., Ma, X., Zhai, X., Gao, M., Dai, H., Schumacher, S., &#38; Gao, T. (2022). Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature. <i>Nature Communications</i>, <i>13</i>(1), Article 3785. <a href=\"https://doi.org/10.1038/s41467-022-31529-4\">https://doi.org/10.1038/s41467-022-31529-4</a>","chicago":"Li, Yao, Xuekai Ma, Xiaokun Zhai, Meini Gao, Haitao Dai, Stefan Schumacher, and Tingge Gao. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling at Room Temperature.” <i>Nature Communications</i> 13, no. 1 (2022). <a href=\"https://doi.org/10.1038/s41467-022-31529-4\">https://doi.org/10.1038/s41467-022-31529-4</a>.","ieee":"Y. Li <i>et al.</i>, “Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature,” <i>Nature Communications</i>, vol. 13, no. 1, Art. no. 3785, 2022, doi: <a href=\"https://doi.org/10.1038/s41467-022-31529-4\">10.1038/s41467-022-31529-4</a>.","ama":"Li Y, Ma X, Zhai X, et al. Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature. <i>Nature Communications</i>. 2022;13(1). doi:<a href=\"https://doi.org/10.1038/s41467-022-31529-4\">10.1038/s41467-022-31529-4</a>"},"intvolume":"        13","year":"2022","issue":"1","publication_status":"published","publication_identifier":{"issn":["2041-1723"]},"doi":"10.1038/s41467-022-31529-4","title":"Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature","date_created":"2022-07-01T09:12:53Z","author":[{"last_name":"Li","full_name":"Li, Yao","first_name":"Yao"},{"first_name":"Xuekai","id":"59416","full_name":"Ma, Xuekai","last_name":"Ma"},{"full_name":"Zhai, Xiaokun","last_name":"Zhai","first_name":"Xiaokun"},{"full_name":"Gao, Meini","last_name":"Gao","first_name":"Meini"},{"last_name":"Dai","full_name":"Dai, Haitao","first_name":"Haitao"},{"first_name":"Stefan","id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951"},{"full_name":"Gao, Tingge","last_name":"Gao","first_name":"Tingge"}],"volume":13,"publisher":"Springer Science and Business Media LLC","date_updated":"2025-12-05T13:54:19Z"},{"doi":"10.1364/ol.457724","title":"Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates","author":[{"full_name":"Gao, Xinghui","last_name":"Gao","first_name":"Xinghui"},{"first_name":"Wei","full_name":"Hu, Wei","last_name":"Hu"},{"full_name":"Schumacher, Stefan","id":"27271","last_name":"Schumacher","orcid":"0000-0003-4042-4951","first_name":"Stefan"},{"first_name":"Xuekai","last_name":"Ma","id":"59416","full_name":"Ma, Xuekai"}],"date_created":"2022-06-24T07:38:11Z","volume":47,"date_updated":"2025-12-05T13:55:22Z","publisher":"Optica Publishing Group","citation":{"apa":"Gao, X., Hu, W., Schumacher, S., &#38; Ma, X. (2022). Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates. <i>Optics Letters</i>, <i>47</i>(13), 3235–3238. <a href=\"https://doi.org/10.1364/ol.457724\">https://doi.org/10.1364/ol.457724</a>","short":"X. Gao, W. Hu, S. Schumacher, X. Ma, Optics Letters 47 (2022) 3235–3238.","mla":"Gao, Xinghui, et al. “Unidirectional Vortex Waveguides and Multistable Vortex Pairs in Polariton Condensates.” <i>Optics Letters</i>, vol. 47, no. 13, Optica Publishing Group, 2022, pp. 3235–38, doi:<a href=\"https://doi.org/10.1364/ol.457724\">10.1364/ol.457724</a>.","bibtex":"@article{Gao_Hu_Schumacher_Ma_2022, title={Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates}, volume={47}, DOI={<a href=\"https://doi.org/10.1364/ol.457724\">10.1364/ol.457724</a>}, number={13}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Gao, Xinghui and Hu, Wei and Schumacher, Stefan and Ma, Xuekai}, year={2022}, pages={3235–3238} }","chicago":"Gao, Xinghui, Wei Hu, Stefan Schumacher, and Xuekai Ma. “Unidirectional Vortex Waveguides and Multistable Vortex Pairs in Polariton Condensates.” <i>Optics Letters</i> 47, no. 13 (2022): 3235–38. <a href=\"https://doi.org/10.1364/ol.457724\">https://doi.org/10.1364/ol.457724</a>.","ieee":"X. Gao, W. Hu, S. Schumacher, and X. Ma, “Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates,” <i>Optics Letters</i>, vol. 47, no. 13, pp. 3235–3238, 2022, doi: <a href=\"https://doi.org/10.1364/ol.457724\">10.1364/ol.457724</a>.","ama":"Gao X, Hu W, Schumacher S, Ma X. Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates. <i>Optics Letters</i>. 2022;47(13):3235-3238. doi:<a href=\"https://doi.org/10.1364/ol.457724\">10.1364/ol.457724</a>"},"intvolume":"        47","page":"3235-3238","year":"2022","issue":"13","publication_status":"published","publication_identifier":{"issn":["0146-9592","1539-4794"]},"language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics"],"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"project":[{"_id":"53","name":"TRR 142: TRR 142"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"61","name":"TRR 142 - A4: TRR 142 - Subproject A4"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"_id":"32148","status":"public","type":"journal_article","publication":"Optics Letters"},{"status":"public","editor":[{"full_name":"Corradi, Gábor","last_name":"Corradi","first_name":"Gábor"},{"last_name":"Kovács","full_name":"Kovács, László","first_name":"László"}],"type":"book_chapter","user_id":"16199","department":[{"_id":"296"},{"_id":"230"},{"_id":"429"},{"_id":"295"},{"_id":"15"},{"_id":"170"},{"_id":"35"},{"_id":"790"}],"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"69","name":"TRR 142 - B4: TRR 142 - Subproject B4"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"166","name":"TRR 142 - A11: TRR 142 - Subproject A11"},{"_id":"168","name":"TRR 142 - B07: TRR 142 - Subproject B07"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"_id":"30288","citation":{"ama":"Schmidt F, Kozub AL, Gerstmann U, Schmidt WG, Schindlmayr A. Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response. In: Corradi G, Kovács L, eds. <i>New Trends in Lithium Niobate: From Bulk to Nanocrystals</i>. MDPI; 2022:231-248. doi:<a href=\"https://doi.org/10.3390/books978-3-0365-3339-1\">10.3390/books978-3-0365-3339-1</a>","chicago":"Schmidt, Falko, Agnieszka L. Kozub, Uwe Gerstmann, Wolf Gero Schmidt, and Arno Schindlmayr. “Electron Polarons in Lithium Niobate: Charge Localization, Lattice Deformation, and Optical Response.” In <i>New Trends in Lithium Niobate: From Bulk to Nanocrystals</i>, edited by Gábor Corradi and László Kovács, 231–48. Basel: MDPI, 2022. <a href=\"https://doi.org/10.3390/books978-3-0365-3339-1\">https://doi.org/10.3390/books978-3-0365-3339-1</a>.","ieee":"F. Schmidt, A. L. Kozub, U. Gerstmann, W. G. Schmidt, and A. Schindlmayr, “Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response,” in <i>New Trends in Lithium Niobate: From Bulk to Nanocrystals</i>, G. Corradi and L. Kovács, Eds. Basel: MDPI, 2022, pp. 231–248.","apa":"Schmidt, F., Kozub, A. L., Gerstmann, U., Schmidt, W. G., &#38; Schindlmayr, A. (2022). Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response. In G. Corradi &#38; L. Kovács (Eds.), <i>New Trends in Lithium Niobate: From Bulk to Nanocrystals</i> (pp. 231–248). MDPI. <a href=\"https://doi.org/10.3390/books978-3-0365-3339-1\">https://doi.org/10.3390/books978-3-0365-3339-1</a>","mla":"Schmidt, Falko, et al. “Electron Polarons in Lithium Niobate: Charge Localization, Lattice Deformation, and Optical Response.” <i>New Trends in Lithium Niobate: From Bulk to Nanocrystals</i>, edited by Gábor Corradi and László Kovács, MDPI, 2022, pp. 231–48, doi:<a href=\"https://doi.org/10.3390/books978-3-0365-3339-1\">10.3390/books978-3-0365-3339-1</a>.","short":"F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, in: G. Corradi, L. Kovács (Eds.), New Trends in Lithium Niobate: From Bulk to Nanocrystals, MDPI, Basel, 2022, pp. 231–248.","bibtex":"@inbook{Schmidt_Kozub_Gerstmann_Schmidt_Schindlmayr_2022, place={Basel}, title={Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response}, DOI={<a href=\"https://doi.org/10.3390/books978-3-0365-3339-1\">10.3390/books978-3-0365-3339-1</a>}, booktitle={New Trends in Lithium Niobate: From Bulk to Nanocrystals}, publisher={MDPI}, author={Schmidt, Falko and Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt, Wolf Gero and Schindlmayr, Arno}, editor={Corradi, Gábor and Kovács, László}, year={2022}, pages={231–248} }"},"page":"231-248","place":"Basel","publication_status":"published","publication_identifier":{"isbn":["978-3-0365-3340-7"],"eisbn":["978-3-0365-3339-1"]},"doi":"10.3390/books978-3-0365-3339-1","author":[{"full_name":"Schmidt, Falko","id":"35251","orcid":"0000-0002-5071-5528","last_name":"Schmidt","first_name":"Falko"},{"first_name":"Agnieszka L.","full_name":"Kozub, Agnieszka L.","id":"77566","orcid":"https://orcid.org/0000-0001-6584-0201","last_name":"Kozub"},{"orcid":"0000-0002-4476-223X","last_name":"Gerstmann","id":"171","full_name":"Gerstmann, Uwe","first_name":"Uwe"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"first_name":"Arno","id":"458","full_name":"Schindlmayr, Arno","orcid":"0000-0002-4855-071X","last_name":"Schindlmayr"}],"date_updated":"2025-12-05T14:00:04Z","abstract":[{"lang":"eng","text":"Lithium niobate (LiNbO3), a material frequently used in optical applications, hosts different kinds of polarons that significantly affect many of its physical properties. In this study, a variety of electron polarons, namely free, bound, and bipolarons, are analyzed using first-principles calculations. We perform a full structural optimization based on density-functional theory for selected intrinsic defects with special attention to the role of symmetry-breaking distortions that lower the total energy. The cations hosting the various polarons relax to a different degree, with a larger relaxation corresponding to a larger gap between the defect level and the conduction-band edge. The projected density of states reveals that the polaron states are formerly empty Nb 4d states lowered into the band gap. Optical absorption spectra are derived within the independent-particle approximation, corrected by the GW approximation that yields a wider band gap and by including excitonic effects within the Bethe-Salpeter equation. Comparing the calculated spectra with the density of states, we find that the defect peak observed in the optical absorption stems from transitions between the defect level and a continuum of empty Nb 4d states. Signatures of polarons are further analyzed in the reflectivity and other experimentally measurable optical coefficients."}],"publication":"New Trends in Lithium Niobate: From Bulk to Nanocrystals","language":[{"iso":"eng"}],"ddc":["530"],"year":"2022","quality_controlled":"1","title":"Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response","date_created":"2022-03-13T15:28:47Z","publisher":"MDPI"},{"title":"Modeling-based learning about chemical phenomena in primary education","date_updated":"2025-12-11T13:26:01Z","publisher":"CIEC, University of Minho","author":[{"id":"54277","full_name":"Elsner, Julia","last_name":"Elsner","first_name":"Julia"},{"first_name":"Claudia","last_name":"Tenberge","id":"67302","full_name":"Tenberge, Claudia"},{"id":"54823","full_name":"Fechner, Sabine","last_name":"Fechner","orcid":"0000-0001-5645-5870","first_name":"Sabine"}],"date_created":"2023-01-10T12:10:53Z","year":"2022","place":"Braga","citation":{"apa":"Elsner, J., Tenberge, C., &#38; Fechner, S. (2022). Modeling-based learning about chemical phenomena in primary education. In G. S. Carvalho, A. S. Afonso, &#38; Z. Anastácio (Eds.), <i>Fostering scientific citizenship in an uncertain world (Proceedings of ESERA 2021)</i> (pp. 1241–1249). CIEC, University of Minho.","short":"J. Elsner, C. Tenberge, S. Fechner, in: G.S. Carvalho, A.S. Afonso, Z. Anastácio (Eds.), Fostering Scientific Citizenship in an Uncertain World (Proceedings of ESERA 2021), CIEC, University of Minho, Braga, 2022, pp. 1241–1249.","mla":"Elsner, Julia, et al. “Modeling-Based Learning about Chemical Phenomena in Primary Education.” <i>Fostering Scientific Citizenship in an Uncertain World (Proceedings of ESERA 2021)</i>, edited by Graça S. Carvalho et al., CIEC, University of Minho, 2022, pp. 1241–49.","bibtex":"@inproceedings{Elsner_Tenberge_Fechner_2022, place={Braga}, title={Modeling-based learning about chemical phenomena in primary education}, booktitle={Fostering scientific citizenship in an uncertain world (Proceedings of ESERA 2021)}, publisher={CIEC, University of Minho}, author={Elsner, Julia and Tenberge, Claudia and Fechner, Sabine}, editor={Carvalho, Graça S. and Afonso, Ana Sofia and Anastácio, Zélia}, year={2022}, pages={1241–1249} }","ieee":"J. Elsner, C. Tenberge, and S. Fechner, “Modeling-based learning about chemical phenomena in primary education,” in <i>Fostering scientific citizenship in an uncertain world (Proceedings of ESERA 2021)</i>, 2022, pp. 1241–1249.","chicago":"Elsner, Julia, Claudia Tenberge, and Sabine Fechner. “Modeling-Based Learning about Chemical Phenomena in Primary Education.” In <i>Fostering Scientific Citizenship in an Uncertain World (Proceedings of ESERA 2021)</i>, edited by Graça S. Carvalho, Ana Sofia Afonso, and Zélia Anastácio, 1241–49. Braga: CIEC, University of Minho, 2022.","ama":"Elsner J, Tenberge C, Fechner S. Modeling-based learning about chemical phenomena in primary education. In: Carvalho GS, Afonso AS, Anastácio Z, eds. <i>Fostering Scientific Citizenship in an Uncertain World (Proceedings of ESERA 2021)</i>. CIEC, University of Minho; 2022:1241-1249."},"page":"1241-1249","publication_status":"published","quality_controlled":"1","ddc":["370"],"language":[{"iso":"eng"}],"_id":"35830","user_id":"54823","department":[{"_id":"386"},{"_id":"588"},{"_id":"33"}],"editor":[{"full_name":"Carvalho, Graça S.","last_name":"Carvalho","first_name":"Graça S."},{"first_name":"Ana Sofia","full_name":"Afonso, Ana Sofia","last_name":"Afonso"},{"first_name":"Zélia","last_name":"Anastácio","full_name":"Anastácio, Zélia"}],"status":"public","type":"conference","publication":"Fostering scientific citizenship in an uncertain world (Proceedings of ESERA 2021)"},{"doi":"https://doi.org/10.1088/2633-4356/ac6f3e","title":"Scalable integration of quantum emitters into photonic integrated circuits","date_created":"2023-02-06T02:30:08Z","author":[{"first_name":"M","last_name":"Sartison","full_name":"Sartison, M"},{"full_name":" Camacho Ibarra, O","last_name":" Camacho Ibarra","first_name":"O"},{"id":"85353","full_name":"Jöns, Klaus D.","last_name":"Jöns","first_name":"Klaus D."},{"last_name":"Caltzidis","full_name":"Caltzidis, I","first_name":"I"},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"}],"volume":2,"date_updated":"2025-12-11T13:09:55Z","citation":{"ama":"Sartison M,  Camacho Ibarra O, Jöns KD, Caltzidis I, Reuter D. Scalable integration of quantum emitters into photonic integrated circuits. 2022;2. doi:<a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>","ieee":"M. Sartison, O.  Camacho Ibarra, K. D. Jöns, I. Caltzidis, and D. Reuter, “Scalable integration of quantum emitters into photonic integrated circuits,” vol. 2. 2022, doi: <a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>.","chicago":"Sartison, M, O  Camacho Ibarra, Klaus D. Jöns, I Caltzidis, and Dirk Reuter. “Scalable integration of quantum emitters into photonic integrated circuits.” Materials for Quantum Technology, 2022. <a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>.","apa":"Sartison, M.,  Camacho Ibarra, O., Jöns, K. D., Caltzidis, I., &#38; Reuter, D. (2022). <i>Scalable integration of quantum emitters into photonic integrated circuits</i> (Vol. 2). <a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>","mla":"Sartison, M., et al. <i>Scalable integration of quantum emitters into photonic integrated circuits</i>. 2022, doi:<a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>.","bibtex":"@article{Sartison_ Camacho Ibarra_Jöns_Caltzidis_Reuter_2022, series={Materials for Quantum Technology}, title={Scalable integration of quantum emitters into photonic integrated circuits}, volume={2}, DOI={<a href=\"https://doi.org/10.1088/2633-4356/ac6f3e\">https://doi.org/10.1088/2633-4356/ac6f3e</a>}, author={Sartison, M and  Camacho Ibarra, O and Jöns, Klaus D. and Caltzidis, I and Reuter, Dirk}, year={2022}, collection={Materials for Quantum Technology} }","short":"M. Sartison, O.  Camacho Ibarra, K.D. Jöns, I. Caltzidis, D. Reuter, 2 (2022)."},"intvolume":"         2","year":"2022","publication_status":"published","language":[{"iso":"ger"}],"user_id":"48188","series_title":"Materials for Quantum Technology","department":[{"_id":"623"},{"_id":"15"},{"_id":"429"},{"_id":"642"}],"_id":"41800","status":"public","type":"conference"},{"language":[{"iso":"eng"}],"article_number":"552","keyword":["Physics and Astronomy (miscellaneous)","General Mathematics","Chemistry (miscellaneous)","Computer Science (miscellaneous)"],"user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"429"},{"_id":"230"},{"_id":"9"},{"_id":"27"}],"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"name":"TRR 142 - C2: TRR 142 - Subproject C2","_id":"72"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"40371","status":"public","abstract":[{"lang":"eng","text":"<jats:p>Multimode integrated interferometers have great potential for both spectral engineering and metrological applications. However, the material dispersion of integrated platforms constitutes an obstacle that limits the performance and precision of such interferometers. At the same time, two-colour nonlinear interferometers present an important tool for metrological applications, when measurements in a certain frequency range are difficult. In this manuscript, we theoretically developed and investigated an integrated multimode two-colour SU(1,1) interferometer operating in a supersensitive mode. By ensuring the proper design of the integrated platform, we suppressed the dispersion, thereby significantly increasing the visibility of the interference pattern. The use of a continuous wave pump laser provided the symmetry between the spectral shapes of the signal and idler photons concerning half the pump frequency, despite different photon colours. We demonstrate that such an interferometer overcomes the classical phase sensitivity limit for wide parametric gain ranges, when up to 3×104 photons are generated.</jats:p>"}],"type":"journal_article","publication":"Symmetry","doi":"10.3390/sym14030552","title":"Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer","date_created":"2023-01-26T13:54:00Z","author":[{"first_name":"Alessandro","last_name":"Ferreri","full_name":"Ferreri, Alessandro"},{"first_name":"Polina R.","id":"60286","full_name":"Sharapova, Polina R.","last_name":"Sharapova"}],"volume":14,"publisher":"MDPI AG","date_updated":"2025-12-16T11:27:11Z","citation":{"chicago":"Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer.” <i>Symmetry</i> 14, no. 3 (2022). <a href=\"https://doi.org/10.3390/sym14030552\">https://doi.org/10.3390/sym14030552</a>.","ieee":"A. Ferreri and P. R. Sharapova, “Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer,” <i>Symmetry</i>, vol. 14, no. 3, Art. no. 552, 2022, doi: <a href=\"https://doi.org/10.3390/sym14030552\">10.3390/sym14030552</a>.","ama":"Ferreri A, Sharapova PR. Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer. <i>Symmetry</i>. 2022;14(3). doi:<a href=\"https://doi.org/10.3390/sym14030552\">10.3390/sym14030552</a>","bibtex":"@article{Ferreri_Sharapova_2022, title={Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/sym14030552\">10.3390/sym14030552</a>}, number={3552}, journal={Symmetry}, publisher={MDPI AG}, author={Ferreri, Alessandro and Sharapova, Polina R.}, year={2022} }","mla":"Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer.” <i>Symmetry</i>, vol. 14, no. 3, 552, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/sym14030552\">10.3390/sym14030552</a>.","short":"A. Ferreri, P.R. Sharapova, Symmetry 14 (2022).","apa":"Ferreri, A., &#38; Sharapova, P. R. (2022). Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer. <i>Symmetry</i>, <i>14</i>(3), Article 552. <a href=\"https://doi.org/10.3390/sym14030552\">https://doi.org/10.3390/sym14030552</a>"},"intvolume":"        14","year":"2022","issue":"3","publication_status":"published","publication_identifier":{"issn":["2073-8994"]}},{"type":"journal_article","publication":"Journal of Physics: Photonics","abstract":[{"lang":"eng","text":"Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properly use these components in the implementation of different quantum protocols, photons with different properties are required. In this paper, we theoretically demonstrate a flexible source of correlated photons built on the LNOI waveguide of a special geometry. This source is based on the parametric down-conversion (PDC) process, in which the signal and idler photons are generated at the telecom wavelength and have different spatial profiles and polarizations, but the same group velocities. Distinguishability in polarizations and spatial profiles facilitates the routing and manipulating individual photons, while the equality of their group velocities leads to the absence of temporal walk-off between photons. We show how the spectral properties of the generated photons and the number of their frequency modes can be controlled depending on the pump characteristics and the waveguide length. Finally, we discuss special regimes, in which narrowband light with strong frequency correlations and polarization-entangled Bell states are generated at the telecom wavelength."}],"status":"public","project":[{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"},{"_id":"75","name":"TRR 142 - C5: TRR 142 - Subproject C5"},{"_id":"72","name":"TRR 142 - C2: TRR 142 - Subproject C2"},{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"}],"_id":"30210","user_id":"16199","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"287"},{"_id":"35"},{"_id":"34"}],"keyword":["tet_topic_waveguide"],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2515-7647"]},"related_material":{"link":[{"relation":"erratum","description":"Corrigendum for table C1","url":"https://doi.org/10.1088/2515-7647/acc70c"}]},"year":"2022","citation":{"ieee":"L. Ebers <i>et al.</i>, “Flexible source of correlated photons based on LNOI rib waveguides,” <i>Journal of Physics: Photonics</i>, vol. 4, p. 025001, 2022, doi: <a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">10.1088/2515-7647/ac5a5b</a>.","chicago":"Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” <i>Journal of Physics: Photonics</i> 4 (2022): 025001. <a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">https://doi.org/10.1088/2515-7647/ac5a5b</a>.","ama":"Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons based on LNOI rib waveguides. <i>Journal of Physics: Photonics</i>. 2022;4:025001. doi:<a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">10.1088/2515-7647/ac5a5b</a>","bibtex":"@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={<a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">10.1088/2515-7647/ac5a5b</a>}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers, Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier, Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001} }","short":"L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova, Journal of Physics: Photonics 4 (2022) 025001.","mla":"Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” <i>Journal of Physics: Photonics</i>, vol. 4, IOP Publishing, 2022, p. 025001, doi:<a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">10.1088/2515-7647/ac5a5b</a>.","apa":"Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., &#38; Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib waveguides. <i>Journal of Physics: Photonics</i>, <i>4</i>, 025001. <a href=\"https://doi.org/10.1088/2515-7647/ac5a5b\">https://doi.org/10.1088/2515-7647/ac5a5b</a>"},"intvolume":"         4","page":"025001","publisher":"IOP Publishing","date_updated":"2025-12-16T11:31:04Z","author":[{"first_name":"Lena","last_name":"Ebers","id":"40428","full_name":"Ebers, Lena"},{"id":"65609","full_name":"Ferreri, Alessandro","last_name":"Ferreri","first_name":"Alessandro"},{"first_name":"Manfred","full_name":"Hammer, Manfred","id":"48077","last_name":"Hammer","orcid":"0000-0002-6331-9348"},{"first_name":"Maximilian","last_name":"Albert","full_name":"Albert, Maximilian"},{"first_name":"Cedrik","id":"20798","full_name":"Meier, Cedrik","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572"},{"last_name":"Förstner","orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","id":"158","first_name":"Jens"},{"first_name":"Polina R.","last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286"}],"date_created":"2022-03-07T09:51:50Z","volume":4,"title":"Flexible source of correlated photons based on LNOI rib waveguides","doi":"10.1088/2515-7647/ac5a5b"},{"article_number":"013701","language":[{"iso":"eng"}],"_id":"33670","project":[{"name":"ISOQC: Quantenkommunikation mit integrierter Optik im Zusammenhang mit supraleitender Elektronik","_id":"209"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"623"}],"user_id":"55629","status":"public","publication":"Physical Review A","type":"journal_article","title":"Information extraction in photon-counting experiments","doi":"10.1103/physreva.106.013701","date_updated":"2025-12-18T17:07:12Z","publisher":"American Physical Society (APS)","volume":106,"date_created":"2022-10-11T07:13:12Z","author":[{"full_name":"Schapeler, Timon","id":"55629","last_name":"Schapeler","orcid":"0000-0001-7652-1716","first_name":"Timon"},{"full_name":"Bartley, Tim","id":"49683","last_name":"Bartley","first_name":"Tim"}],"year":"2022","intvolume":"       106","citation":{"apa":"Schapeler, T., &#38; Bartley, T. (2022). Information extraction in photon-counting experiments. <i>Physical Review A</i>, <i>106</i>(1), Article 013701. <a href=\"https://doi.org/10.1103/physreva.106.013701\">https://doi.org/10.1103/physreva.106.013701</a>","bibtex":"@article{Schapeler_Bartley_2022, title={Information extraction in photon-counting experiments}, volume={106}, DOI={<a href=\"https://doi.org/10.1103/physreva.106.013701\">10.1103/physreva.106.013701</a>}, number={1013701}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Schapeler, Timon and Bartley, Tim}, year={2022} }","short":"T. Schapeler, T. Bartley, Physical Review A 106 (2022).","mla":"Schapeler, Timon, and Tim Bartley. “Information Extraction in Photon-Counting Experiments.” <i>Physical Review A</i>, vol. 106, no. 1, 013701, American Physical Society (APS), 2022, doi:<a href=\"https://doi.org/10.1103/physreva.106.013701\">10.1103/physreva.106.013701</a>.","ama":"Schapeler T, Bartley T. Information extraction in photon-counting experiments. <i>Physical Review A</i>. 2022;106(1). doi:<a href=\"https://doi.org/10.1103/physreva.106.013701\">10.1103/physreva.106.013701</a>","ieee":"T. Schapeler and T. Bartley, “Information extraction in photon-counting experiments,” <i>Physical Review A</i>, vol. 106, no. 1, Art. no. 013701, 2022, doi: <a href=\"https://doi.org/10.1103/physreva.106.013701\">10.1103/physreva.106.013701</a>.","chicago":"Schapeler, Timon, and Tim Bartley. “Information Extraction in Photon-Counting Experiments.” <i>Physical Review A</i> 106, no. 1 (2022). <a href=\"https://doi.org/10.1103/physreva.106.013701\">https://doi.org/10.1103/physreva.106.013701</a>."},"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","issue":"1"},{"abstract":[{"lang":"eng","text":"<jats:p>We report on coherent transmission of beyond 100 GBd signaling based on plasmonic technology. Using dual-drive plasmonic-organic-hybrid I/Q modulator on silicon photonics platform, we demonstrate the successful transmission of 160-GBaud QPSK and 140-GBaud 16QAM modulations.</jats:p>"}],"status":"public","publication":"Optical Fiber Communication Conference (OFC) 2022","type":"conference","language":[{"iso":"eng"}],"_id":"63039","department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"user_id":"112030","year":"2022","citation":{"apa":"Mardoyan, H., Jorge, F., Destraz, M., Duval, B., Bitachon, B., Horst, Y., Benyahya, K., Blache, F., Goix, M., De Leo, E., Habegger, P., Meier, N., Del Medico, N., Tedaldi, V., Funck, C., Güsken, N. A., Leuthold, J., Renaudier, J., Hoessbacher, C., … Baeuerle, B. (2022). Generation and transmission of 160-Gbaud QPSK Coherent Signals using a Dual-Drive Plasmonic-Organic Hybrid I/Q modulator on Silicon Photonics. <i>Optical Fiber Communication Conference (OFC) 2022</i>. <a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">https://doi.org/10.1364/ofc.2022.th1j.5</a>","bibtex":"@inproceedings{Mardoyan_Jorge_Destraz_Duval_Bitachon_Horst_Benyahya_Blache_Goix_De Leo_et al._2022, title={Generation and transmission of 160-Gbaud QPSK Coherent Signals using a Dual-Drive Plasmonic-Organic Hybrid I/Q modulator on Silicon Photonics}, DOI={<a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">10.1364/ofc.2022.th1j.5</a>}, booktitle={Optical Fiber Communication Conference (OFC) 2022}, publisher={Optica Publishing Group}, author={Mardoyan, Haïk and Jorge, Filipe and Destraz, Marcel and Duval, Bernadette and Bitachon, Bertold and Horst, Yannik and Benyahya, Kaoutar and Blache, Fabrice and Goix, Michel and De Leo, Eva and et al.}, year={2022} }","short":"H. Mardoyan, F. Jorge, M. Destraz, B. Duval, B. Bitachon, Y. Horst, K. Benyahya, F. Blache, M. Goix, E. De Leo, P. Habegger, N. Meier, N. Del Medico, V. Tedaldi, C. Funck, N.A. Güsken, J. Leuthold, J. Renaudier, C. Hoessbacher, W. Heni, B. Baeuerle, in: Optical Fiber Communication Conference (OFC) 2022, Optica Publishing Group, 2022.","mla":"Mardoyan, Haïk, et al. “Generation and Transmission of 160-Gbaud QPSK Coherent Signals Using a Dual-Drive Plasmonic-Organic Hybrid I/Q Modulator on Silicon Photonics.” <i>Optical Fiber Communication Conference (OFC) 2022</i>, Optica Publishing Group, 2022, doi:<a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">10.1364/ofc.2022.th1j.5</a>.","ama":"Mardoyan H, Jorge F, Destraz M, et al. Generation and transmission of 160-Gbaud QPSK Coherent Signals using a Dual-Drive Plasmonic-Organic Hybrid I/Q modulator on Silicon Photonics. In: <i>Optical Fiber Communication Conference (OFC) 2022</i>. Optica Publishing Group; 2022. doi:<a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">10.1364/ofc.2022.th1j.5</a>","ieee":"H. Mardoyan <i>et al.</i>, “Generation and transmission of 160-Gbaud QPSK Coherent Signals using a Dual-Drive Plasmonic-Organic Hybrid I/Q modulator on Silicon Photonics,” 2022, doi: <a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">10.1364/ofc.2022.th1j.5</a>.","chicago":"Mardoyan, Haïk, Filipe Jorge, Marcel Destraz, Bernadette Duval, Bertold Bitachon, Yannik Horst, Kaoutar Benyahya, et al. “Generation and Transmission of 160-Gbaud QPSK Coherent Signals Using a Dual-Drive Plasmonic-Organic Hybrid I/Q Modulator on Silicon Photonics.” In <i>Optical Fiber Communication Conference (OFC) 2022</i>. Optica Publishing Group, 2022. <a href=\"https://doi.org/10.1364/ofc.2022.th1j.5\">https://doi.org/10.1364/ofc.2022.th1j.5</a>."},"publication_status":"published","title":"Generation and transmission of 160-Gbaud QPSK Coherent Signals using a Dual-Drive Plasmonic-Organic Hybrid I/Q modulator on Silicon Photonics","doi":"10.1364/ofc.2022.th1j.5","date_updated":"2026-01-08T13:22:48Z","publisher":"Optica Publishing Group","author":[{"first_name":"Haïk","full_name":"Mardoyan, Haïk","last_name":"Mardoyan"},{"first_name":"Filipe","last_name":"Jorge","full_name":"Jorge, Filipe"},{"first_name":"Marcel","full_name":"Destraz, Marcel","last_name":"Destraz"},{"last_name":"Duval","full_name":"Duval, Bernadette","first_name":"Bernadette"},{"first_name":"Bertold","full_name":"Bitachon, Bertold","last_name":"Bitachon"},{"last_name":"Horst","full_name":"Horst, Yannik","first_name":"Yannik"},{"last_name":"Benyahya","full_name":"Benyahya, Kaoutar","first_name":"Kaoutar"},{"full_name":"Blache, Fabrice","last_name":"Blache","first_name":"Fabrice"},{"full_name":"Goix, Michel","last_name":"Goix","first_name":"Michel"},{"first_name":"Eva","last_name":"De Leo","full_name":"De Leo, Eva"},{"first_name":"Patrick","last_name":"Habegger","full_name":"Habegger, Patrick"},{"last_name":"Meier","full_name":"Meier, Norbert","first_name":"Norbert"},{"last_name":"Del Medico","full_name":"Del Medico, Nino","first_name":"Nino"},{"first_name":"Valentino","last_name":"Tedaldi","full_name":"Tedaldi, Valentino"},{"first_name":"Christian","last_name":"Funck","full_name":"Funck, Christian"},{"first_name":"Nicholas Alexander","orcid":"0000-0002-4816-0666","last_name":"Güsken","id":"112030","full_name":"Güsken, Nicholas Alexander"},{"last_name":"Leuthold","full_name":"Leuthold, Juerg","first_name":"Juerg"},{"first_name":"Jéremie","full_name":"Renaudier, Jéremie","last_name":"Renaudier"},{"full_name":"Hoessbacher, Claudia","last_name":"Hoessbacher","first_name":"Claudia"},{"first_name":"Wolfgang","last_name":"Heni","full_name":"Heni, Wolfgang"},{"full_name":"Baeuerle, Benedikt","last_name":"Baeuerle","first_name":"Benedikt"}],"date_created":"2025-12-11T20:32:06Z"},{"citation":{"apa":"Güsken, N. A. (2022). <i>Plasmonic PICs—Terabit Modulation on the Micrometer Scale</i>. European Conference and Exhibition on Optical Communication. <a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>","short":"N.A. Güsken, in: Optica Publishing Group, 2022.","mla":"Güsken, Nicholas Alexander. <i>Plasmonic PICs—Terabit Modulation on the Micrometer Scale</i>. Optica Publishing Group, 2022, doi:<a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>.","bibtex":"@inproceedings{Güsken_2022, title={Plasmonic PICs—Terabit Modulation on the Micrometer Scale}, DOI={<a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>}, publisher={Optica Publishing Group}, author={Güsken, Nicholas Alexander}, year={2022} }","ieee":"N. A. Güsken, “Plasmonic PICs—Terabit Modulation on the Micrometer Scale,” presented at the European Conference and Exhibition on Optical Communication, 2022, doi: <a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>.","chicago":"Güsken, Nicholas Alexander. “Plasmonic PICs—Terabit Modulation on the Micrometer Scale.” Optica Publishing Group, 2022. <a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>.","ama":"Güsken NA. Plasmonic PICs—Terabit Modulation on the Micrometer Scale. In: Optica Publishing Group; 2022. doi:<a href=\"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3\">https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3</a>"},"year":"2022","conference":{"name":"European Conference and Exhibition on Optical Communication"},"doi":"https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Tu4E.3","title":"Plasmonic PICs—Terabit Modulation on the Micrometer Scale","author":[{"first_name":"Nicholas Alexander","orcid":"0000-0002-4816-0666","last_name":"Güsken","full_name":"Güsken, Nicholas Alexander","id":"112030"}],"date_created":"2025-12-11T20:35:30Z","date_updated":"2026-01-08T16:08:47Z","publisher":"Optica Publishing Group","status":"public","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"user_id":"112030","_id":"63041"},{"language":[{"iso":"eng"}],"publication":"Physical Review A","abstract":[{"lang":"eng","text":"Quantum walks function as essential means to implement quantum simulators, allowing one to study complex and often directly inaccessible quantum processes in controllable systems. In this contribution, the notion of a driven Gaussian quantum walk is introduced. In contrast to typically considered quantum walks in optical settings, we describe the operation of the walk in terms of a nonlinear map rather than a unitary operation, e.g., by replacing a beam-splitter-type coin with a two-mode squeezer, being a process that is controlled and driven by a pump field. This opens previously unattainable possibilities for quantum walks that include nonlinear elements as core components of their operation, vastly extending their range of applications. A full framework for driven Gaussian quantum walks is developed, including methods to dynamically characterize nonlinear, quantum, and quantum-nonlinear effects. Moreover, driven Gaussian quantum walks are compared with their classically interfering and linear counterparts, which are based on classical coherence of light rather than quantum superpositions. In particular, the generation and boost of highly multimode entanglement, squeezing, and other quantum effects are studied over the duration of the nonlinear walk. Importantly, we prove the quantumness of the evolution itself, regardless of the input state. A scheme for an experimental realization is proposed. Furthermore, nonlinear properties of driven Gaussian quantum walks are explored, such as amplification that leads to an ever increasing number of correlated quantum particles, constituting a source of new walkers during the walk. Therefore, a concept for quantum walks is proposed that leads to—and even produces—directly accessible quantum phenomena, and that renders the quantum simulation of nonlinear processes possible."}],"date_created":"2022-04-20T06:38:07Z","publisher":"American Physical Society (APS)","title":"Driven Gaussian quantum walks","issue":"4","year":"2022","user_id":"68236","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"project":[{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"name":"TRR 142: TRR 142","_id":"53"}],"_id":"30921","article_type":"original","article_number":"042210","type":"journal_article","status":"public","author":[{"last_name":"Held","id":"68236","full_name":"Held, Philip","first_name":"Philip"},{"last_name":"Engelkemeier","full_name":"Engelkemeier, Melanie","first_name":"Melanie"},{"last_name":"De","full_name":"De, Syamsundar","first_name":"Syamsundar"},{"first_name":"Sonja","last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"volume":105,"date_updated":"2026-01-09T09:50:22Z","main_file_link":[{"url":"https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.042210"}],"doi":"10.1103/physreva.105.042210","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"citation":{"ama":"Held P, Engelkemeier M, De S, Barkhofen S, Sperling J, Silberhorn C. Driven Gaussian quantum walks. <i>Physical Review A</i>. 2022;105(4). doi:<a href=\"https://doi.org/10.1103/physreva.105.042210\">10.1103/physreva.105.042210</a>","chicago":"Held, Philip, Melanie Engelkemeier, Syamsundar De, Sonja Barkhofen, Jan Sperling, and Christine Silberhorn. “Driven Gaussian Quantum Walks.” <i>Physical Review A</i> 105, no. 4 (2022). <a href=\"https://doi.org/10.1103/physreva.105.042210\">https://doi.org/10.1103/physreva.105.042210</a>.","ieee":"P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, and C. Silberhorn, “Driven Gaussian quantum walks,” <i>Physical Review A</i>, vol. 105, no. 4, Art. no. 042210, 2022, doi: <a href=\"https://doi.org/10.1103/physreva.105.042210\">10.1103/physreva.105.042210</a>.","mla":"Held, Philip, et al. “Driven Gaussian Quantum Walks.” <i>Physical Review A</i>, vol. 105, no. 4, 042210, American Physical Society (APS), 2022, doi:<a href=\"https://doi.org/10.1103/physreva.105.042210\">10.1103/physreva.105.042210</a>.","short":"P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn, Physical Review A 105 (2022).","bibtex":"@article{Held_Engelkemeier_De_Barkhofen_Sperling_Silberhorn_2022, title={Driven Gaussian quantum walks}, volume={105}, DOI={<a href=\"https://doi.org/10.1103/physreva.105.042210\">10.1103/physreva.105.042210</a>}, number={4042210}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Held, Philip and Engelkemeier, Melanie and De, Syamsundar and Barkhofen, Sonja and Sperling, Jan and Silberhorn, Christine}, year={2022} }","apa":"Held, P., Engelkemeier, M., De, S., Barkhofen, S., Sperling, J., &#38; Silberhorn, C. (2022). Driven Gaussian quantum walks. <i>Physical Review A</i>, <i>105</i>(4), Article 042210. <a href=\"https://doi.org/10.1103/physreva.105.042210\">https://doi.org/10.1103/physreva.105.042210</a>"},"intvolume":"       105"},{"language":[{"iso":"eng"}],"publication":"Nature Communications","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>Tailored nanoscale quantum light sources, matching the specific needs of use cases, are crucial building blocks for photonic quantum technologies. Several different approaches to realize solid-state quantum emitters with high performance have been pursued and different concepts for energy tuning have been established. However, the properties of the emitted photons are always defined by the individual quantum emitter and can therefore not be controlled with full flexibility. Here we introduce an all-optical nonlinear method to tailor and control the single photon emission. We demonstrate a laser-controlled down-conversion process from an excited state of a semiconductor quantum three-level system. Based on this concept, we realize energy tuning and polarization control of the single photon emission with a control-laser field. Our results mark an important step towards tailored single photon emission from a photonic quantum system based on quantum optical principles.</jats:p>","lang":"eng"}],"date_created":"2026-01-06T13:51:50Z","publisher":"Springer Science and Business Media LLC","title":"Nonlinear down-conversion in a single quantum dot","issue":"1","year":"2022","user_id":"72332","department":[{"_id":"15"}],"project":[{"_id":"55","name":"TRR 142 - Project Area B"}],"_id":"63508","article_number":"1387","type":"journal_article","status":"public","author":[{"last_name":"Jonas","full_name":"Jonas, B.","first_name":"B."},{"first_name":"D.","full_name":"Heinze, D.","last_name":"Heinze"},{"first_name":"E.","full_name":"Schöll, E.","last_name":"Schöll"},{"first_name":"P.","full_name":"Kallert, P.","last_name":"Kallert"},{"last_name":"Langer","full_name":"Langer, T.","first_name":"T."},{"full_name":"Krehs, S.","last_name":"Krehs","first_name":"S."},{"full_name":"Widhalm, A.","last_name":"Widhalm","first_name":"A."},{"last_name":"Jöns","full_name":"Jöns, K. D.","first_name":"K. D."},{"first_name":"D.","full_name":"Reuter, D.","last_name":"Reuter"},{"full_name":"Schumacher, S.","last_name":"Schumacher","first_name":"S."},{"last_name":"Zrenner","full_name":"Zrenner, A.","first_name":"A."}],"volume":13,"date_updated":"2026-04-24T14:07:26Z","doi":"10.1038/s41467-022-28993-3","publication_status":"published","publication_identifier":{"issn":["2041-1723"]},"citation":{"bibtex":"@article{Jonas_Heinze_Schöll_Kallert_Langer_Krehs_Widhalm_Jöns_Reuter_Schumacher_et al._2022, title={Nonlinear down-conversion in a single quantum dot}, volume={13}, DOI={<a href=\"https://doi.org/10.1038/s41467-022-28993-3\">10.1038/s41467-022-28993-3</a>}, number={11387}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Jonas, B. and Heinze, D. and Schöll, E. and Kallert, P. and Langer, T. and Krehs, S. and Widhalm, A. and Jöns, K. D. and Reuter, D. and Schumacher, S. and et al.}, year={2022} }","short":"B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K.D. Jöns, D. Reuter, S. Schumacher, A. Zrenner, Nature Communications 13 (2022).","mla":"Jonas, B., et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” <i>Nature Communications</i>, vol. 13, no. 1, 1387, Springer Science and Business Media LLC, 2022, doi:<a href=\"https://doi.org/10.1038/s41467-022-28993-3\">10.1038/s41467-022-28993-3</a>.","apa":"Jonas, B., Heinze, D., Schöll, E., Kallert, P., Langer, T., Krehs, S., Widhalm, A., Jöns, K. D., Reuter, D., Schumacher, S., &#38; Zrenner, A. (2022). Nonlinear down-conversion in a single quantum dot. <i>Nature Communications</i>, <i>13</i>(1), Article 1387. <a href=\"https://doi.org/10.1038/s41467-022-28993-3\">https://doi.org/10.1038/s41467-022-28993-3</a>","ama":"Jonas B, Heinze D, Schöll E, et al. Nonlinear down-conversion in a single quantum dot. <i>Nature Communications</i>. 2022;13(1). doi:<a href=\"https://doi.org/10.1038/s41467-022-28993-3\">10.1038/s41467-022-28993-3</a>","ieee":"B. Jonas <i>et al.</i>, “Nonlinear down-conversion in a single quantum dot,” <i>Nature Communications</i>, vol. 13, no. 1, Art. no. 1387, 2022, doi: <a href=\"https://doi.org/10.1038/s41467-022-28993-3\">10.1038/s41467-022-28993-3</a>.","chicago":"Jonas, B., D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” <i>Nature Communications</i> 13, no. 1 (2022). <a href=\"https://doi.org/10.1038/s41467-022-28993-3\">https://doi.org/10.1038/s41467-022-28993-3</a>."},"intvolume":"        13"},{"quality_controlled":"1","issue":"10","year":"2021","date_created":"2021-10-07T07:39:27Z","title":"Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces","publication":"ACS Nano","abstract":[{"text":"The nonlinear process of second harmonic generation (SHG) in monolayer (1L) transition metal dichalcogenides (TMD), like WS2, strongly depends on the polarization state of the excitation light. By combination of plasmonic nanostructures with 1L-WS2 by transferring it onto a plasmonic nanoantenna array, a hybrid metasurface is realized impacting the polarization dependency of its SHG. Here, we investigate how plasmonic dipole resonances affect the process of SHG in plasmonic–TMD hybrid metasurfaces by nonlinear spectroscopy. We show that the polarization dependency is affected by the lattice structure of plasmonic nanoantenna arrays as well as by the relative orientation between the 1L-WS2 and the individual plasmonic nanoantennas. In addition, such hybrid metasurfaces show SHG in polarization states, where SHG is usually forbidden for either 1L-WS2 or plasmonic nanoantennas. By comparing the SHG in these channels with the SHG generated by the hybrid metasurface components, we detect an enhancement of the SHG signal by a factor of more than 40. Meanwhile, an attenuation of the SHG signal in usually allowed polarization states is observed. Our study provides valuable insight into hybrid systems where symmetries strongly affect the SHG and enable tailored SHG in 1L-WS2 for future applications.","lang":"eng"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["1936-0851","1936-086X"]},"publication_status":"published","intvolume":"        15","page":"16719-16728","citation":{"ama":"Spreyer F, Ruppert C, Georgi P, Zentgraf T. Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>. 2021;15(10):16719-16728. doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>","ieee":"F. Spreyer, C. Ruppert, P. Georgi, and T. Zentgraf, “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces,” <i>ACS Nano</i>, vol. 15, no. 10, pp. 16719–16728, 2021, doi: <a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>.","chicago":"Spreyer, Florian, Claudia Ruppert, Philip Georgi, and Thomas Zentgraf. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i> 15, no. 10 (2021): 16719–28. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>.","bibtex":"@article{Spreyer_Ruppert_Georgi_Zentgraf_2021, title={Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces}, volume={15}, DOI={<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>}, number={10}, journal={ACS Nano}, author={Spreyer, Florian and Ruppert, Claudia and Georgi, Philip and Zentgraf, Thomas}, year={2021}, pages={16719–16728} }","short":"F. Spreyer, C. Ruppert, P. Georgi, T. Zentgraf, ACS Nano 15 (2021) 16719–16728.","mla":"Spreyer, Florian, et al. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i>, vol. 15, no. 10, 2021, pp. 16719–28, doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>.","apa":"Spreyer, F., Ruppert, C., Georgi, P., &#38; Zentgraf, T. (2021). Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>, <i>15</i>(10), 16719–16728. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>"},"date_updated":"2022-01-06T06:57:07Z","oa":"1","volume":15,"author":[{"first_name":"Florian","last_name":"Spreyer","full_name":"Spreyer, Florian"},{"full_name":"Ruppert, Claudia","last_name":"Ruppert","first_name":"Claudia"},{"full_name":"Georgi, Philip","last_name":"Georgi","first_name":"Philip"},{"full_name":"Zentgraf, Thomas","id":"30525","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas"}],"doi":"10.1021/acsnano.1c06693","main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsnano.1c06693","open_access":"1"}],"type":"journal_article","status":"public","_id":"25605","project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142 - Subproject A7","_id":"64"},{"_id":"65","name":"TRR 142 - Subproject A8"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"user_id":"30525","article_type":"original","funded_apc":"1"},{"oa":"1","date_updated":"2022-01-06T06:57:15Z","date_created":"2021-10-11T13:09:58Z","author":[{"first_name":"Simon","full_name":"Lahme, Simon","last_name":"Lahme"},{"orcid":"0000-0002-1742-3099","last_name":"Bauer","id":"24755","full_name":"Bauer, Anna","first_name":"Anna"},{"first_name":"Peter","last_name":"Reinhold","full_name":"Reinhold, Peter"}],"title":"Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik","main_file_link":[{"url":"http://www.phydid.de/index.php/phydid-b/article/view/1125","open_access":"1"}],"publication_status":"published","year":"2021","citation":{"mla":"Lahme, Simon, et al. “Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik.” <i>Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung</i>, 2021, pp. 127–34.","bibtex":"@article{Lahme_Bauer_Reinhold_2021, title={Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik}, journal={Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung}, author={Lahme, Simon and Bauer, Anna and Reinhold, Peter}, year={2021}, pages={127–134} }","short":"S. Lahme, A. Bauer, P. Reinhold, Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung (2021) 127–134.","apa":"Lahme, S., Bauer, A., &#38; Reinhold, P. (2021). Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik. <i>Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung</i>, 127–134.","ieee":"S. Lahme, A. Bauer, and P. Reinhold, “Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik,” <i>Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung</i>, pp. 127–134, 2021.","chicago":"Lahme, Simon, Anna Bauer, and Peter Reinhold. “Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik.” <i>Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung</i>, 2021, 127–34.","ama":"Lahme S, Bauer A, Reinhold P. Ansätze zur Diagnose und Förderung von Problemlösefähigkeiten in der Studieneingangsphase Physik. <i>Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung</i>. Published online 2021:127-134."},"page":"127-134","_id":"26039","user_id":"24755","department":[{"_id":"299"},{"_id":"651"}],"language":[{"iso":"ger"}],"type":"journal_article","publication":"Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung","status":"public"},{"author":[{"full_name":"Kismann, Michael","last_name":"Kismann","first_name":"Michael"},{"full_name":"Riedl, Dr. Thomas","last_name":"Riedl","first_name":"Dr. Thomas"},{"full_name":"Lindner, Prof. Dr. Jörg KN","last_name":"Lindner","first_name":"Prof. Dr. Jörg KN"}],"date_created":"2021-02-02T16:41:11Z","date_updated":"2022-01-06T06:54:46Z","title":"Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching","citation":{"apa":"Kismann, M., Riedl, D. T., &#38; Lindner, P. D. J. K. (2021). Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching. <i>Materials Science in Semiconductor Processing</i>.","bibtex":"@article{Kismann_Riedl_Lindner_2021, title={Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching}, journal={Materials Science in Semiconductor Processing}, author={Kismann, Michael and Riedl, Dr. Thomas and Lindner, Prof. Dr. Jörg KN}, year={2021} }","mla":"Kismann, Michael, et al. “Ordered Arrays of Si Nanopillars with Alternating Diameters Fabricated by Nanosphere Lithography and Metal-Assisted Chemical Etching.” <i>Materials Science in Semiconductor Processing</i>, 2021.","short":"M. Kismann, D.T. Riedl, P.D.J.K. Lindner, Materials Science in Semiconductor Processing (2021).","ama":"Kismann M, Riedl DT, Lindner PDJK. Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching. <i>Materials Science in Semiconductor Processing</i>. 2021.","chicago":"Kismann, Michael, Dr. Thomas Riedl, and Prof. Dr. Jörg KN Lindner. “Ordered Arrays of Si Nanopillars with Alternating Diameters Fabricated by Nanosphere Lithography and Metal-Assisted Chemical Etching.” <i>Materials Science in Semiconductor Processing</i>, 2021.","ieee":"M. Kismann, D. T. Riedl, and P. D. J. K. Lindner, “Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching,” <i>Materials Science in Semiconductor Processing</i>, 2021."},"year":"2021","department":[{"_id":"286"},{"_id":"15"},{"_id":"321"},{"_id":"9"}],"user_id":"77496","_id":"21125","language":[{"iso":"eng"}],"publication":"Materials Science in Semiconductor Processing","type":"journal_article","status":"public"}]