[{"year":"2026","citation":{"ama":"Taheri B, Kopylov D, Hammer M, Meier T, Förstner J, Sharapova PR. Gain-induced spectral non-degeneracy in type-II parametric down-conversion. <i>arXiv</i>. Published online 2026. doi:<a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">10.48550/ARXIV.2603.01656</a>","chicago":"Taheri, Behnood, Denis Kopylov, Manfred Hammer, Torsten Meier, Jens Förstner, and Polina R. Sharapova. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric down-Conversion.” <i>ArXiv</i>, 2026. <a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">https://doi.org/10.48550/ARXIV.2603.01656</a>.","ieee":"B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, and P. R. Sharapova, “Gain-induced spectral non-degeneracy in type-II parametric down-conversion,” <i>arXiv</i>, 2026, doi: <a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">10.48550/ARXIV.2603.01656</a>.","mla":"Taheri, Behnood, et al. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric down-Conversion.” <i>ArXiv</i>, 2026, doi:<a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">10.48550/ARXIV.2603.01656</a>.","bibtex":"@article{Taheri_Kopylov_Hammer_Meier_Förstner_Sharapova_2026, title={Gain-induced spectral non-degeneracy in type-II parametric down-conversion}, DOI={<a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">10.48550/ARXIV.2603.01656</a>}, journal={arXiv}, author={Taheri, Behnood and Kopylov, Denis and Hammer, Manfred and Meier, Torsten and Förstner, Jens and Sharapova, Polina R.}, year={2026} }","short":"B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, P.R. Sharapova, ArXiv (2026).","apa":"Taheri, B., Kopylov, D., Hammer, M., Meier, T., Förstner, J., &#38; Sharapova, P. R. (2026). Gain-induced spectral non-degeneracy in type-II parametric down-conversion. <i>ArXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2603.01656\">https://doi.org/10.48550/ARXIV.2603.01656</a>"},"date_updated":"2026-03-10T15:41:18Z","author":[{"last_name":"Taheri","full_name":"Taheri, Behnood","first_name":"Behnood"},{"first_name":"Denis","id":"98502","full_name":"Kopylov, Denis","last_name":"Kopylov"},{"full_name":"Hammer, Manfred","id":"48077","last_name":"Hammer","orcid":"0000-0002-6331-9348","first_name":"Manfred"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens","first_name":"Jens"},{"first_name":"Polina R.","full_name":"Sharapova, Polina R.","id":"60286","last_name":"Sharapova"}],"date_created":"2026-03-10T15:37:22Z","title":"Gain-induced spectral non-degeneracy in type-II parametric down-conversion","doi":"10.48550/ARXIV.2603.01656","publication":"arXiv","type":"journal_article","status":"public","_id":"64877","project":[{"_id":"168","name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"34"},{"_id":"61"},{"_id":"230"},{"_id":"623"},{"_id":"429"}],"user_id":"16199","language":[{"iso":"eng"}]},{"status":"public","type":"journal_article","article_type":"original","article_number":"016112","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"},{"_id":"429"}],"user_id":"55907","_id":"63744","project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"intvolume":"        10","citation":{"ama":"Scharwald D, Gehse L, Sharapova P. Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams. <i>APL Photonics</i>. 2025;10(1). doi:<a href=\"https://doi.org/10.1063/5.0229802\">10.1063/5.0229802</a>","ieee":"D. Scharwald, L. Gehse, and P. Sharapova, “Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams,” <i>APL Photonics</i>, vol. 10, no. 1, Art. no. 016112, 2025, doi: <a href=\"https://doi.org/10.1063/5.0229802\">10.1063/5.0229802</a>.","chicago":"Scharwald, Dennis, Lucas Gehse, and Polina Sharapova. “Schmidt Modes Carrying Orbital Angular Momentum Generated by Cascaded Systems Pumped with Laguerre–Gaussian Beams.” <i>APL Photonics</i> 10, no. 1 (2025). <a href=\"https://doi.org/10.1063/5.0229802\">https://doi.org/10.1063/5.0229802</a>.","mla":"Scharwald, Dennis, et al. “Schmidt Modes Carrying Orbital Angular Momentum Generated by Cascaded Systems Pumped with Laguerre–Gaussian Beams.” <i>APL Photonics</i>, vol. 10, no. 1, 016112, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0229802\">10.1063/5.0229802</a>.","short":"D. Scharwald, L. Gehse, P. Sharapova, APL Photonics 10 (2025).","bibtex":"@article{Scharwald_Gehse_Sharapova_2025, title={Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams}, volume={10}, DOI={<a href=\"https://doi.org/10.1063/5.0229802\">10.1063/5.0229802</a>}, number={1016112}, journal={APL Photonics}, publisher={AIP Publishing}, author={Scharwald, Dennis and Gehse, Lucas and Sharapova, Polina}, year={2025} }","apa":"Scharwald, D., Gehse, L., &#38; Sharapova, P. (2025). Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams. <i>APL Photonics</i>, <i>10</i>(1), Article 016112. <a href=\"https://doi.org/10.1063/5.0229802\">https://doi.org/10.1063/5.0229802</a>"},"publication_identifier":{"issn":["2378-0967"]},"publication_status":"published","doi":"10.1063/5.0229802","main_file_link":[{"url":"https://pubs.aip.org/aip/app/article-pdf/doi/10.1063/5.0229802/20352749/016112_1_5.0229802.pdf","open_access":"1"}],"volume":10,"author":[{"last_name":"Scharwald","orcid":"0009-0007-5654-5412","id":"55907","full_name":"Scharwald, Dennis","first_name":"Dennis"},{"last_name":"Gehse","full_name":"Gehse, Lucas","first_name":"Lucas"},{"first_name":"Polina","last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina"}],"oa":"1","date_updated":"2026-02-01T13:19:20Z","abstract":[{"text":"Orbital angular momentum (OAM) modes are an important resource used in various branches of quantum science and technology due to their unique helical structure and countably infinite basis. Generating light that simultaneously carries high-order orbital angular momenta and exhibits quantum correlations is a challenging task. In this work, we present a theoretical approach to the generation of correlated Schmidt modes carrying OAM via parametric down-conversion (PDC) in cascaded nonlinear systems (nonlinear interferometers) pumped by Laguerre–Gaussian beams. We demonstrate how the number of generated modes and their population can be controlled by varying the pump parameters, the gain of the PDC process, and the distance between the crystals. We investigate the angular displacement measurement uncertainty of these interferometers and demonstrate that it can overcome the classical shot noise limit.","lang":"eng"}],"publication":"APL Photonics","language":[{"iso":"eng"}],"year":"2025","issue":"1","title":"Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams","date_created":"2026-01-26T15:48:54Z","publisher":"AIP Publishing"},{"intvolume":"         3","citation":{"ama":"Barakat I, Kalash M, Scharwald D, Sharapova P, Lindlein N, Chekhova M. Simultaneous measurement of multimode squeezing through multimode phase-sensitive amplification. <i>Optica Quantum</i>. 2025;3(1). doi:<a href=\"https://doi.org/10.1364/opticaq.524682\">10.1364/opticaq.524682</a>","chicago":"Barakat, Ismail, Mahmoud Kalash, Dennis Scharwald, Polina Sharapova, Norbert Lindlein, and Maria Chekhova. “Simultaneous Measurement of Multimode Squeezing through Multimode Phase-Sensitive Amplification.” <i>Optica Quantum</i> 3, no. 1 (2025). <a href=\"https://doi.org/10.1364/opticaq.524682\">https://doi.org/10.1364/opticaq.524682</a>.","ieee":"I. Barakat, M. Kalash, D. Scharwald, P. Sharapova, N. Lindlein, and M. Chekhova, “Simultaneous measurement of multimode squeezing through multimode phase-sensitive amplification,” <i>Optica Quantum</i>, vol. 3, no. 1, Art. no. 36, 2025, doi: <a href=\"https://doi.org/10.1364/opticaq.524682\">10.1364/opticaq.524682</a>.","apa":"Barakat, I., Kalash, M., Scharwald, D., Sharapova, P., Lindlein, N., &#38; Chekhova, M. (2025). Simultaneous measurement of multimode squeezing through multimode phase-sensitive amplification. <i>Optica Quantum</i>, <i>3</i>(1), Article 36. <a href=\"https://doi.org/10.1364/opticaq.524682\">https://doi.org/10.1364/opticaq.524682</a>","mla":"Barakat, Ismail, et al. “Simultaneous Measurement of Multimode Squeezing through Multimode Phase-Sensitive Amplification.” <i>Optica Quantum</i>, vol. 3, no. 1, 36, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/opticaq.524682\">10.1364/opticaq.524682</a>.","bibtex":"@article{Barakat_Kalash_Scharwald_Sharapova_Lindlein_Chekhova_2025, title={Simultaneous measurement of multimode squeezing through multimode phase-sensitive amplification}, volume={3}, DOI={<a href=\"https://doi.org/10.1364/opticaq.524682\">10.1364/opticaq.524682</a>}, number={136}, journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Barakat, Ismail and Kalash, Mahmoud and Scharwald, Dennis and Sharapova, Polina and Lindlein, Norbert and Chekhova, Maria}, year={2025} }","short":"I. Barakat, M. Kalash, D. Scharwald, P. Sharapova, N. Lindlein, M. Chekhova, Optica Quantum 3 (2025)."},"year":"2025","issue":"1","publication_identifier":{"issn":["2837-6714"]},"publication_status":"published","doi":"10.1364/opticaq.524682","main_file_link":[{"url":"https://opg.optica.org/opticaq/viewmedia.cfm?uri=opticaq-3-1-36&seq=0","open_access":"1"}],"title":"Simultaneous measurement of multimode squeezing through multimode phase-sensitive amplification","volume":3,"date_created":"2026-01-26T15:57:13Z","author":[{"first_name":"Ismail","last_name":"Barakat","full_name":"Barakat, Ismail"},{"full_name":"Kalash, Mahmoud","last_name":"Kalash","first_name":"Mahmoud"},{"last_name":"Scharwald","orcid":"0009-0007-5654-5412","full_name":"Scharwald, Dennis","id":"55907","first_name":"Dennis"},{"first_name":"Polina","id":"60286","full_name":"Sharapova, Polina","last_name":"Sharapova"},{"full_name":"Lindlein, Norbert","last_name":"Lindlein","first_name":"Norbert"},{"first_name":"Maria","full_name":"Chekhova, Maria","last_name":"Chekhova"}],"publisher":"Optica Publishing Group","date_updated":"2026-02-10T22:44:44Z","oa":"1","status":"public","abstract":[{"lang":"eng","text":"Multimode squeezed light is an increasingly popular tool in photonic quantum technologies, including sensing, imaging, and computation. Meanwhile, the existing methods of its characterization are technically complicated, which reduces the level of squeezing, and mostly deal with a single mode at a time. Here, for the first time, to the best of our knowledge, we employ optical parametric amplification to characterize multiple squeezing eigenmodes simultaneously. We retrieve the shapes and squeezing degrees of all modes at once through direct detection followed by modal decomposition. This method is tolerant to inefficient detection and does not require a local oscillator. For a spectrally and spatially multimode squeezed vacuum, we characterize eight strongest spatial modes, obtaining squeezing and anti-squeezing values of up to −5.2 ± 0.2 dB and 8.6 ± 0.3 dB, respectively, despite the 50% detection loss. This work, being the first exploration of an optical parametric amplifier’s multimode capability for squeezing detection, paves the way for the real-time detection of multimode squeezing."}],"publication":"Optica Quantum","type":"journal_article","language":[{"iso":"eng"}],"article_number":"36","article_type":"original","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"},{"_id":"429"}],"user_id":"55907","_id":"63745","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_id":"56","name":"TRR 142 - Project Area C"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}]},{"language":[{"iso":"eng"}],"department":[{"_id":"623"},{"_id":"15"},{"_id":"636"}],"user_id":"85279","external_id":{"arxiv":["2502.05123"]},"_id":"58544","status":"public","abstract":[{"text":"We introduce a new classification of multimode states with a fixed number of photons. This classification is based on the factorizability of homogeneous multivariate polynomials and is invariant under unitary transformations. The classes physically correspond to field excitations in terms of single and multiple photons, each of which being in an arbitrary irreducible superposition of quantized modes. We further show how the transitions between classes are rendered possible by photon addition, photon subtraction, and photon-projection nonlinearities. We explicitly put forward a design for a multilayer interferometer in which the states for different classes can be generated with state-of-the-art experimental techniques. Limitations of the proposed designs are analyzed using the introduced classification, providing a benchmark for the robustness of certain states and classes. ","lang":"eng"}],"type":"preprint","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2502.05123"}],"title":"Multiphoton, multimode state classification for nonlinear optical circuits ","date_created":"2025-02-10T08:26:45Z","author":[{"first_name":"Denis","full_name":"Kopylov, Denis","id":"98502","last_name":"Kopylov"},{"first_name":"Christian","last_name":"Offen","orcid":"0000-0002-5940-8057","full_name":"Offen, Christian","id":"85279"},{"first_name":"Laura","last_name":"Ares","full_name":"Ares, Laura"},{"first_name":"Boris Edgar","full_name":"Wembe Moafo, Boris Edgar","id":"95394","last_name":"Wembe Moafo"},{"first_name":"Sina","id":"16494","full_name":"Ober-Blöbaum, Sina","last_name":"Ober-Blöbaum"},{"full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina","first_name":"Polina"},{"first_name":"Jan","full_name":"Sperling, Jan","id":"75127","orcid":"0000-0002-5844-3205","last_name":"Sperling"}],"oa":"1","date_updated":"2025-02-10T08:36:12Z","citation":{"chicago":"Kopylov, Denis, Christian Offen, Laura Ares, Boris Edgar Wembe Moafo, Sina Ober-Blöbaum, Torsten Meier, Polina Sharapova, and Jan Sperling. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits ,” n.d.","ieee":"D. Kopylov <i>et al.</i>, “Multiphoton, multimode state classification for nonlinear optical circuits .” .","ama":"Kopylov D, Offen C, Ares L, et al. Multiphoton, multimode state classification for nonlinear optical circuits .","apa":"Kopylov, D., Offen, C., Ares, L., Wembe Moafo, B. E., Ober-Blöbaum, S., Meier, T., Sharapova, P., &#38; Sperling, J. (n.d.). <i>Multiphoton, multimode state classification for nonlinear optical circuits </i>.","bibtex":"@article{Kopylov_Offen_Ares_Wembe Moafo_Ober-Blöbaum_Meier_Sharapova_Sperling, title={Multiphoton, multimode state classification for nonlinear optical circuits }, author={Kopylov, Denis and Offen, Christian and Ares, Laura and Wembe Moafo, Boris Edgar and Ober-Blöbaum, Sina and Meier, Torsten and Sharapova, Polina and Sperling, Jan} }","mla":"Kopylov, Denis, et al. <i>Multiphoton, Multimode State Classification for Nonlinear Optical Circuits </i>.","short":"D. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier, P. Sharapova, J. Sperling, (n.d.)."},"year":"2025","publication_status":"submitted"},{"publication_identifier":{"issn":["2521-327X"]},"publication_status":"published","year":"2025","intvolume":"         9","citation":{"ama":"Kopylov DA, Meier T, Sharapova PR. Theory of Multimode Squeezed Light Generation in Lossy Media. <i>Quantum</i>. 2025;9. doi:<a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">10.22331/q-2025-02-04-1621</a>","chicago":"Kopylov, Denis A., Torsten Meier, and Polina R. Sharapova. “Theory of Multimode Squeezed Light Generation in Lossy Media.” <i>Quantum</i> 9 (2025). <a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">https://doi.org/10.22331/q-2025-02-04-1621</a>.","ieee":"D. A. Kopylov, T. Meier, and P. R. Sharapova, “Theory of Multimode Squeezed Light Generation in Lossy Media,” <i>Quantum</i>, vol. 9, Art. no. 1621, 2025, doi: <a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">10.22331/q-2025-02-04-1621</a>.","short":"D.A. Kopylov, T. Meier, P.R. Sharapova, Quantum 9 (2025).","mla":"Kopylov, Denis A., et al. “Theory of Multimode Squeezed Light Generation in Lossy Media.” <i>Quantum</i>, vol. 9, 1621, Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften, 2025, doi:<a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">10.22331/q-2025-02-04-1621</a>.","bibtex":"@article{Kopylov_Meier_Sharapova_2025, title={Theory of Multimode Squeezed Light Generation in Lossy Media}, volume={9}, DOI={<a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">10.22331/q-2025-02-04-1621</a>}, number={1621}, journal={Quantum}, publisher={Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften}, author={Kopylov, Denis A. and Meier, Torsten and Sharapova, Polina R.}, year={2025} }","apa":"Kopylov, D. A., Meier, T., &#38; Sharapova, P. R. (2025). Theory of Multimode Squeezed Light Generation in Lossy Media. <i>Quantum</i>, <i>9</i>, Article 1621. <a href=\"https://doi.org/10.22331/q-2025-02-04-1621\">https://doi.org/10.22331/q-2025-02-04-1621</a>"},"publisher":"Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften","date_updated":"2025-09-18T13:22:26Z","volume":9,"date_created":"2025-02-05T12:57:37Z","author":[{"first_name":"Denis A.","last_name":"Kopylov","full_name":"Kopylov, Denis A."},{"last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"},{"first_name":"Polina R.","last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina R."}],"title":"Theory of Multimode Squeezed Light Generation in Lossy Media","doi":"10.22331/q-2025-02-04-1621","publication":"Quantum","type":"journal_article","abstract":[{"text":"<jats:p>A unified theoretical approach to describe the properties of multimode squeezed light generated in a lossy medium is presented. This approach is valid for Markovian environments and includes both a model of discrete losses based on the beamsplitter approach and a generalized continuous loss model based on the spatial Langevin equation. For an important class of Gaussian states, we derive master equations for the second-order correlation functions and illustrate their solution for both frequency-independent and frequency-dependent losses. Studying the mode structure, we demonstrate that in a lossy environment no broadband basis without quadrature correlations between the different broadband modes exists. Therefore, various techniques and strategies to introduce broadband modes can be considered. We show that the Mercer expansion and the Williamson-Euler decomposition do not provide modes in which the maximal squeezing contained in the system can be measured. In turn, we find a new broadband basis that maximizes squeezing in the lossy system and present an algorithm to construct it.</jats:p>","lang":"eng"}],"status":"public","_id":"58519","project":[{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266"},{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"},{"_id":"623"},{"_id":"27"}],"user_id":"16199","article_number":"1621","language":[{"iso":"eng"}]},{"type":"journal_article","publication":"Physical Review Research","status":"public","abstract":[{"text":"<jats:p>In this paper, we theoretically study the spectral and temporal properties of pulsed spontaneous parametric down-conversion (SPDC) generated in lossy waveguides. Our theoretical approach is based on the formalism of Gaussian states and the Langevin equation, which is elaborated for weak parametric down-conversion and photon-number-unresolved click detection. Using the example of frequency-degenerate type-II SPDC generated under the pump-idler group-velocity-matching condition, we show how the joint-spectral intensity, mode structure, normalized second-order correlation function, and Hong-Ou-Mandel interference pattern depend on internal losses of the SPDC process. We found that the joint-spectral intensity is almost insensitive to internal losses, while the second-order correlation function shows a strong dependence on them, being different for the signal and idler beams in the presence of internal losses. Based on the sensitivity of the normalized second-order correlation function, we show how its measurement can be used to experimentally determine internal losses.</jats:p>","lang":"eng"}],"user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"288"},{"_id":"230"},{"_id":"623"},{"_id":"429"},{"_id":"35"}],"project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"}],"_id":"62911","language":[{"iso":"eng"}],"article_number":"033122","issue":"3","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"citation":{"ama":"Kopylov DA, Stefszky M, Meier T, Silberhorn C, Sharapova PR. Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation. <i>Physical Review Research</i>. 2025;7(3). doi:<a href=\"https://doi.org/10.1103/zp72-7qwl\">10.1103/zp72-7qwl</a>","chicago":"Kopylov, Denis A., Michael Stefszky, Torsten Meier, Christine Silberhorn, and Polina R. Sharapova. “Spectral and Temporal Properties of Type-II Parametric down-Conversion: The Impact of Losses during State Generation.” <i>Physical Review Research</i> 7, no. 3 (2025). <a href=\"https://doi.org/10.1103/zp72-7qwl\">https://doi.org/10.1103/zp72-7qwl</a>.","ieee":"D. A. Kopylov, M. Stefszky, T. Meier, C. Silberhorn, and P. R. Sharapova, “Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation,” <i>Physical Review Research</i>, vol. 7, no. 3, Art. no. 033122, 2025, doi: <a href=\"https://doi.org/10.1103/zp72-7qwl\">10.1103/zp72-7qwl</a>.","bibtex":"@article{Kopylov_Stefszky_Meier_Silberhorn_Sharapova_2025, title={Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation}, volume={7}, DOI={<a href=\"https://doi.org/10.1103/zp72-7qwl\">10.1103/zp72-7qwl</a>}, number={3033122}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Kopylov, Denis A. and Stefszky, Michael and Meier, Torsten and Silberhorn, Christine and Sharapova, Polina R.}, year={2025} }","short":"D.A. Kopylov, M. Stefszky, T. Meier, C. Silberhorn, P.R. Sharapova, Physical Review Research 7 (2025).","mla":"Kopylov, Denis A., et al. “Spectral and Temporal Properties of Type-II Parametric down-Conversion: The Impact of Losses during State Generation.” <i>Physical Review Research</i>, vol. 7, no. 3, 033122, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/zp72-7qwl\">10.1103/zp72-7qwl</a>.","apa":"Kopylov, D. A., Stefszky, M., Meier, T., Silberhorn, C., &#38; Sharapova, P. R. (2025). Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation. <i>Physical Review Research</i>, <i>7</i>(3), Article 033122. <a href=\"https://doi.org/10.1103/zp72-7qwl\">https://doi.org/10.1103/zp72-7qwl</a>"},"intvolume":"         7","year":"2025","author":[{"full_name":"Kopylov, Denis A.","last_name":"Kopylov","first_name":"Denis A."},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."}],"date_created":"2025-12-05T09:33:36Z","volume":7,"date_updated":"2025-12-05T09:55:22Z","publisher":"American Physical Society (APS)","doi":"10.1103/zp72-7qwl","title":"Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation"},{"year":"2025","intvolume":"         7","citation":{"apa":"Kopylov, D. A., Offen, C., Ares, L., Wembe Moafo, B. E., Ober-Blöbaum, S., Meier, T., Sharapova, P. R., &#38; Sperling, J. (2025). Multiphoton, multimode state classification for nonlinear optical circuits. <i>Physical Review Research</i>, <i>7</i>(3), Article 033062. <a href=\"https://doi.org/10.1103/sv6z-v1gk\">https://doi.org/10.1103/sv6z-v1gk</a>","mla":"Kopylov, Denis A., et al. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits.” <i>Physical Review Research</i>, vol. 7, no. 3, 033062, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/sv6z-v1gk\">10.1103/sv6z-v1gk</a>.","short":"D.A. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier, P.R. Sharapova, J. Sperling, Physical Review Research 7 (2025).","bibtex":"@article{Kopylov_Offen_Ares_Wembe Moafo_Ober-Blöbaum_Meier_Sharapova_Sperling_2025, title={Multiphoton, multimode state classification for nonlinear optical circuits}, volume={7}, DOI={<a href=\"https://doi.org/10.1103/sv6z-v1gk\">10.1103/sv6z-v1gk</a>}, number={3033062}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Kopylov, Denis A. and Offen, Christian and Ares, Laura and Wembe Moafo, Boris Edgar and Ober-Blöbaum, Sina and Meier, Torsten and Sharapova, Polina R. and Sperling, Jan}, year={2025} }","ama":"Kopylov DA, Offen C, Ares L, et al. Multiphoton, multimode state classification for nonlinear optical circuits. <i>Physical Review Research</i>. 2025;7(3). doi:<a href=\"https://doi.org/10.1103/sv6z-v1gk\">10.1103/sv6z-v1gk</a>","ieee":"D. A. Kopylov <i>et al.</i>, “Multiphoton, multimode state classification for nonlinear optical circuits,” <i>Physical Review Research</i>, vol. 7, no. 3, Art. no. 033062, 2025, doi: <a href=\"https://doi.org/10.1103/sv6z-v1gk\">10.1103/sv6z-v1gk</a>.","chicago":"Kopylov, Denis A., Christian Offen, Laura Ares, Boris Edgar Wembe Moafo, Sina Ober-Blöbaum, Torsten Meier, Polina R. Sharapova, and Jan Sperling. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits.” <i>Physical Review Research</i> 7, no. 3 (2025). <a href=\"https://doi.org/10.1103/sv6z-v1gk\">https://doi.org/10.1103/sv6z-v1gk</a>."},"publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","issue":"3","title":"Multiphoton, multimode state classification for nonlinear optical circuits","doi":"10.1103/sv6z-v1gk","publisher":"American Physical Society (APS)","date_updated":"2025-12-09T09:10:01Z","volume":7,"author":[{"first_name":"Denis A.","last_name":"Kopylov","full_name":"Kopylov, Denis A."},{"full_name":"Offen, Christian","id":"85279","last_name":"Offen","orcid":"0000-0002-5940-8057","first_name":"Christian"},{"first_name":"Laura","last_name":"Ares","full_name":"Ares, Laura"},{"last_name":"Wembe Moafo","id":"95394","full_name":"Wembe Moafo, Boris Edgar","first_name":"Boris Edgar"},{"last_name":"Ober-Blöbaum","full_name":"Ober-Blöbaum, Sina","id":"16494","first_name":"Sina"},{"first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344"},{"first_name":"Polina R.","id":"60286","full_name":"Sharapova, Polina R.","last_name":"Sharapova"},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"}],"date_created":"2025-12-09T09:08:39Z","abstract":[{"lang":"eng","text":"<jats:p>We introduce a new classification of multimode states with a fixed number of photons. This classification is based on the factorizability of homogeneous multivariate polynomials and is invariant under unitary transformations. The classes physically correspond to field excitations in terms of single and multiple photons, each of which is in an arbitrary irreducible superposition of quantized modes. We further show how the transitions between classes are rendered possible by photon addition, photon subtraction, and photon-projection nonlinearities. We explicitly put forward a design for a multilayer interferometer in which the states for different classes can be generated with state-of-the-art experimental techniques. Limitations of the proposed designs are analyzed using the introduced classification, providing a benchmark for the robustness of certain states and classes.</jats:p>"}],"status":"public","publication":"Physical Review Research","type":"journal_article","article_number":"033062","language":[{"iso":"eng"}],"_id":"62980","project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"706"},{"_id":"636"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"user_id":"16199"},{"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"706"},{"_id":"636"},{"_id":"230"},{"_id":"623"},{"_id":"429"},{"_id":"35"}],"user_id":"16199","_id":"62979","project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"language":[{"iso":"eng"}],"type":"preprint","status":"public","abstract":[{"lang":"eng","text":"We introduce a new classification of multimode states with a fixed number of photons. This classification is based on the factorizability of homogeneous multivariate polynomials and is invariant under unitary transformations. The classes physically correspond to field excitations in terms of single and multiple photons, each of which being in an arbitrary irreducible superposition of quantized modes. We further show how the transitions between classes are rendered possible by photon addition, photon subtraction, and photon-projection nonlinearities. We explicitly put forward a design for a multilayer interferometer in which the states for different classes can be generated with state-of-the-art experimental techniques. Limitations of the proposed designs are analyzed using the introduced classification, providing a benchmark for the robustness of certain states and classes."}],"date_created":"2025-12-09T08:59:27Z","author":[{"first_name":"Torsten","id":"344","full_name":"Meier, Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072"},{"full_name":"Sharapova, Polina R.","id":"60286","last_name":"Sharapova","first_name":"Polina R."},{"orcid":"0000-0002-5844-3205","last_name":"Sperling","id":"75127","full_name":"Sperling, Jan","first_name":"Jan"},{"last_name":"Ober-Blöbaum","full_name":"Ober-Blöbaum, Sina","id":"16494","first_name":"Sina"},{"first_name":"Boris Edgar","last_name":"Wembe Moafo","full_name":"Wembe Moafo, Boris Edgar","id":"95394"},{"id":"85279","full_name":"Offen, Christian","orcid":"0000-0002-5940-8057","last_name":"Offen","first_name":"Christian"}],"date_updated":"2025-12-09T09:10:23Z","title":"Multiphoton, multimode state classification for nonlinear optical circuits","citation":{"bibtex":"@article{Meier_Sharapova_Sperling_Ober-Blöbaum_Wembe Moafo_Offen_2025, title={Multiphoton, multimode state classification for nonlinear optical circuits}, author={Meier, Torsten and Sharapova, Polina R. and Sperling, Jan and Ober-Blöbaum, Sina and Wembe Moafo, Boris Edgar and Offen, Christian}, year={2025} }","mla":"Meier, Torsten, et al. <i>Multiphoton, Multimode State Classification for Nonlinear Optical Circuits</i>. 2025.","short":"T. Meier, P.R. Sharapova, J. Sperling, S. Ober-Blöbaum, B.E. Wembe Moafo, C. Offen, (2025).","apa":"Meier, T., Sharapova, P. R., Sperling, J., Ober-Blöbaum, S., Wembe Moafo, B. E., &#38; Offen, C. (2025). <i>Multiphoton, multimode state classification for nonlinear optical circuits</i>.","ama":"Meier T, Sharapova PR, Sperling J, Ober-Blöbaum S, Wembe Moafo BE, Offen C. Multiphoton, multimode state classification for nonlinear optical circuits. Published online 2025.","chicago":"Meier, Torsten, Polina R. Sharapova, Jan Sperling, Sina Ober-Blöbaum, Boris Edgar Wembe Moafo, and Christian Offen. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits,” 2025.","ieee":"T. Meier, P. R. Sharapova, J. Sperling, S. Ober-Blöbaum, B. E. Wembe Moafo, and C. Offen, “Multiphoton, multimode state classification for nonlinear optical circuits.” 2025."},"year":"2025"},{"publication":"APL Quantum","type":"journal_article","abstract":[{"text":"<jats:p>Entangled two-mode Gaussian states constitute an important building block for continuous variable quantum computing and communication protocols. In this work, we theoretically study two-mode bipartite states, which are extracted from multimode light generated via type-II parametric downconversion (PDC) in lossy waveguides. For these states, we demonstrate that the squeezing quantifies entanglement and we construct a measurement basis, which results in the maximal bipartite entanglement. We illustrate our findings by numerically solving the spatial master equation for PDC in a Markovian environment. The optimal measurement modes are compared with two widely used broadband bases: the Mercer–Wolf basis (the first-order coherence basis) and the Williamson–Euler basis.</jats:p>","lang":"eng"}],"status":"public","_id":"63562","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_id":"56","name":"TRR 142 - Project Area C"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"429"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"user_id":"16199","article_number":"046116","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2835-0103"]},"publication_status":"published","issue":"4","year":"2025","intvolume":"         2","citation":{"ama":"Kopylov D, Meier T, Sharapova PR. Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides. <i>APL Quantum</i>. 2025;2(4). doi:<a href=\"https://doi.org/10.1063/5.0293116\">10.1063/5.0293116</a>","chicago":"Kopylov, Denis, Torsten Meier, and Polina R. Sharapova. “Bipartite Entanglement Extracted from Multimode Squeezed Light Generated in Lossy Waveguides.” <i>APL Quantum</i> 2, no. 4 (2025). <a href=\"https://doi.org/10.1063/5.0293116\">https://doi.org/10.1063/5.0293116</a>.","ieee":"D. Kopylov, T. Meier, and P. R. Sharapova, “Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides,” <i>APL Quantum</i>, vol. 2, no. 4, Art. no. 046116, 2025, doi: <a href=\"https://doi.org/10.1063/5.0293116\">10.1063/5.0293116</a>.","mla":"Kopylov, Denis, et al. “Bipartite Entanglement Extracted from Multimode Squeezed Light Generated in Lossy Waveguides.” <i>APL Quantum</i>, vol. 2, no. 4, 046116, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0293116\">10.1063/5.0293116</a>.","short":"D. Kopylov, T. Meier, P.R. Sharapova, APL Quantum 2 (2025).","bibtex":"@article{Kopylov_Meier_Sharapova_2025, title={Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides}, volume={2}, DOI={<a href=\"https://doi.org/10.1063/5.0293116\">10.1063/5.0293116</a>}, number={4046116}, journal={APL Quantum}, publisher={AIP Publishing}, author={Kopylov, Denis and Meier, Torsten and Sharapova, Polina R.}, year={2025} }","apa":"Kopylov, D., Meier, T., &#38; Sharapova, P. R. (2025). Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides. <i>APL Quantum</i>, <i>2</i>(4), Article 046116. <a href=\"https://doi.org/10.1063/5.0293116\">https://doi.org/10.1063/5.0293116</a>"},"date_updated":"2026-01-12T13:23:36Z","publisher":"AIP Publishing","volume":2,"date_created":"2026-01-12T13:18:51Z","author":[{"full_name":"Kopylov, Denis","id":"98502","last_name":"Kopylov","first_name":"Denis"},{"last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344","first_name":"Torsten"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."}],"title":"Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides","doi":"10.1063/5.0293116"},{"abstract":[{"text":"Dataset of the publication \"Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light\" H. Rose, P. R. Sharapova, and T. Meier, Proc. SPIE 12884, Ultrafast Phenomena and Nanophotonics XXVIII, 1288403 (2024). ( https://doi.org/10.1117/12.2690245 ). The zip file includes the data on which the plots shown in figures 1 and 2 are based.","lang":"eng"}],"status":"public","type":"research_data","_id":"54405","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"}],"user_id":"16199","year":"2024","citation":{"short":"H. Rose, P. Sharapova, T. Meier, Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light, LibreCat University, 2024.","bibtex":"@book{Rose_Sharapova_Meier_2024, title={Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.10817980\">10.5281/ZENODO.10817980</a>}, publisher={LibreCat University}, author={Rose, Hendrik and Sharapova, Polina and Meier, Torsten}, year={2024} }","mla":"Rose, Hendrik, et al. <i>Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light</i>. LibreCat University, 2024, doi:<a href=\"https://doi.org/10.5281/ZENODO.10817980\">10.5281/ZENODO.10817980</a>.","apa":"Rose, H., Sharapova, P., &#38; Meier, T. (2024). <i>Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light</i>. LibreCat University. <a href=\"https://doi.org/10.5281/ZENODO.10817980\">https://doi.org/10.5281/ZENODO.10817980</a>","ama":"Rose H, Sharapova P, Meier T. <i>Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light</i>. LibreCat University; 2024. doi:<a href=\"https://doi.org/10.5281/ZENODO.10817980\">10.5281/ZENODO.10817980</a>","ieee":"H. Rose, P. Sharapova, and T. Meier, <i>Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light</i>. LibreCat University, 2024.","chicago":"Rose, Hendrik, Polina Sharapova, and Torsten Meier. <i>Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light</i>. LibreCat University, 2024. <a href=\"https://doi.org/10.5281/ZENODO.10817980\">https://doi.org/10.5281/ZENODO.10817980</a>."},"title":"Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light","doi":"10.5281/ZENODO.10817980","date_updated":"2024-08-09T05:15:58Z","publisher":"LibreCat University","date_created":"2024-05-21T14:31:43Z","author":[{"first_name":"Hendrik","orcid":"0000-0002-3079-5428","last_name":"Rose","full_name":"Rose, Hendrik","id":"55958"},{"first_name":"Polina","last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina"},{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072"}]},{"date_updated":"2024-08-30T11:59:34Z","publisher":"SPIE","author":[{"first_name":"Hendrik","last_name":"Rose","orcid":"0000-0002-3079-5428","full_name":"Rose, Hendrik","id":"55958"},{"first_name":"Polina R.","last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286"},{"orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344","first_name":"Torsten"}],"date_created":"2024-07-15T10:26:04Z","title":"Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light","doi":"10.1117/12.2690245","publication_status":"published","year":"2024","citation":{"bibtex":"@inproceedings{Rose_Sharapova_Meier_2024, title={Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light}, DOI={<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>}, booktitle={Ultrafast Phenomena and Nanophotonics XXVIII}, publisher={SPIE}, author={Rose, Hendrik and Sharapova, Polina R. and Meier, Torsten}, editor={Betz, Markus and Elezzabi, Abdulhakem Y.}, year={2024} }","short":"H. Rose, P.R. Sharapova, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXVIII, SPIE, 2024.","mla":"Rose, Hendrik, et al. “Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light.” <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi, SPIE, 2024, doi:<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>.","apa":"Rose, H., Sharapova, P. R., &#38; Meier, T. (2024). Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light. In M. Betz &#38; A. Y. Elezzabi (Eds.), <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>. SPIE. <a href=\"https://doi.org/10.1117/12.2690245\">https://doi.org/10.1117/12.2690245</a>","ama":"Rose H, Sharapova PR, Meier T. Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light. In: Betz M, Elezzabi AY, eds. <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>. SPIE; 2024. doi:<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>","chicago":"Rose, Hendrik, Polina R. Sharapova, and Torsten Meier. “Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light.” In <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi. SPIE, 2024. <a href=\"https://doi.org/10.1117/12.2690245\">https://doi.org/10.1117/12.2690245</a>.","ieee":"H. Rose, P. R. Sharapova, and T. Meier, “Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light,” in <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, 2024, doi: <a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>."},"project":[{"_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","grant_number":"231447078"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"grant_number":"231447078","_id":"59","name":"TRR 142 - A02: TRR 142 - Nichtlineare Spektroskopie von Halbleiter-Nanostrukturen mit Quantenlicht (A02)"}],"_id":"55268","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"language":[{"iso":"eng"}],"type":"conference","publication":"Ultrafast Phenomena and Nanophotonics XXVIII","editor":[{"last_name":"Betz","full_name":"Betz, Markus","first_name":"Markus"},{"full_name":"Elezzabi, Abdulhakem Y.","last_name":"Elezzabi","first_name":"Abdulhakem Y."}],"status":"public"},{"year":"2023","citation":{"ama":"Rose H, Vasil’ev AN, Tikhonova OV, Meier T, Sharapova P. <i>Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field</i>. LibreCat University; 2023. doi:<a href=\"https://doi.org/10.5281/ZENODO.7554556\">10.5281/ZENODO.7554556</a>","ieee":"H. Rose, A. N. Vasil’ev, O. V. Tikhonova, T. Meier, and P. Sharapova, <i>Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field</i>. LibreCat University, 2023.","chicago":"Rose, Hendrik, Andrey N. Vasil’ev, Olga V. Tikhonova, Torsten Meier, and Polina Sharapova. <i>Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field</i>. LibreCat University, 2023. <a href=\"https://doi.org/10.5281/ZENODO.7554556\">https://doi.org/10.5281/ZENODO.7554556</a>.","apa":"Rose, H., Vasil’ev, A. N., Tikhonova, O. V., Meier, T., &#38; Sharapova, P. (2023). <i>Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field</i>. LibreCat University. <a href=\"https://doi.org/10.5281/ZENODO.7554556\">https://doi.org/10.5281/ZENODO.7554556</a>","short":"H. Rose, A.N. Vasil’ev, O.V. Tikhonova, T. Meier, P. Sharapova, Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field, LibreCat University, 2023.","mla":"Rose, Hendrik, et al. <i>Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field</i>. LibreCat University, 2023, doi:<a href=\"https://doi.org/10.5281/ZENODO.7554556\">10.5281/ZENODO.7554556</a>.","bibtex":"@book{Rose_Vasil’ev_Tikhonova_Meier_Sharapova_2023, title={Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.7554556\">10.5281/ZENODO.7554556</a>}, publisher={LibreCat University}, author={Rose, Hendrik and Vasil’ev, Andrey N. and Tikhonova, Olga V. and Meier, Torsten and Sharapova, Polina}, year={2023} }"},"date_updated":"2024-07-15T09:35:42Z","publisher":"LibreCat University","author":[{"last_name":"Rose","orcid":"0000-0002-3079-5428","full_name":"Rose, Hendrik","id":"55958","first_name":"Hendrik"},{"last_name":"Vasil'ev","full_name":"Vasil'ev, Andrey N.","first_name":"Andrey N."},{"last_name":"Tikhonova","full_name":"Tikhonova, Olga V.","first_name":"Olga V."},{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier"},{"full_name":"Sharapova, Polina","id":"60286","last_name":"Sharapova","first_name":"Polina"}],"date_created":"2024-05-21T14:34:35Z","title":"Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field","doi":"10.5281/ZENODO.7554556","type":"research_data","abstract":[{"text":"Dataset of the publication \"Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field\" H. Rose, A. N. Vasil’ev, O. V. Tikhonova, T. Meier, and P. R. Sharapova, Phys. Rev. A <strong>107</strong>, 013703 (2023). ( https://doi.org/10.1103/PhysRevA.107.013703 ). The zip file includes the data on which the plots shown in figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 are based.","lang":"eng"}],"status":"public","_id":"54407","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"}],"user_id":"16199"},{"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"59","name":"TRR 142 - A02: TRR 142 - Subproject A02"}],"_id":"37280","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"article_number":"013703","language":[{"iso":"eng"}],"type":"journal_article","publication":"Physical Review A","status":"public","date_updated":"2023-04-21T11:06:33Z","publisher":"American Physical Society (APS)","date_created":"2023-01-18T10:27:21Z","author":[{"first_name":"Hendrik","orcid":"0000-0002-3079-5428","last_name":"Rose","id":"55958","full_name":"Rose, Hendrik"},{"first_name":"A. N.","last_name":"Vasil'ev","full_name":"Vasil'ev, A. N."},{"first_name":"O. V.","full_name":"Tikhonova, O. V.","last_name":"Tikhonova"},{"id":"344","full_name":"Meier, Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten"},{"first_name":"Polina","id":"60286","full_name":"Sharapova, Polina","last_name":"Sharapova"}],"volume":107,"title":"Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field","doi":"10.1103/physreva.107.013703","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"issue":"1","year":"2023","citation":{"ieee":"H. Rose, A. N. Vasil’ev, O. V. Tikhonova, T. Meier, and P. Sharapova, “Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field,” <i>Physical Review A</i>, vol. 107, no. 1, Art. no. 013703, 2023, doi: <a href=\"https://doi.org/10.1103/physreva.107.013703\">10.1103/physreva.107.013703</a>.","chicago":"Rose, Hendrik, A. N. Vasil’ev, O. V. Tikhonova, Torsten Meier, and Polina Sharapova. “Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field.” <i>Physical Review A</i> 107, no. 1 (2023). <a href=\"https://doi.org/10.1103/physreva.107.013703\">https://doi.org/10.1103/physreva.107.013703</a>.","ama":"Rose H, Vasil’ev AN, Tikhonova OV, Meier T, Sharapova P. Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field. <i>Physical Review A</i>. 2023;107(1). doi:<a href=\"https://doi.org/10.1103/physreva.107.013703\">10.1103/physreva.107.013703</a>","bibtex":"@article{Rose_Vasil’ev_Tikhonova_Meier_Sharapova_2023, title={Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field}, volume={107}, DOI={<a href=\"https://doi.org/10.1103/physreva.107.013703\">10.1103/physreva.107.013703</a>}, number={1013703}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Rose, Hendrik and Vasil’ev, A. N. and Tikhonova, O. V. and Meier, Torsten and Sharapova, Polina}, year={2023} }","mla":"Rose, Hendrik, et al. “Quantum-Optical Excitations of Semiconductor Nanostructures in a Microcavity Using a Two-Band Model and a Single-Mode Quantum Field.” <i>Physical Review A</i>, vol. 107, no. 1, 013703, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physreva.107.013703\">10.1103/physreva.107.013703</a>.","short":"H. Rose, A.N. Vasil’ev, O.V. Tikhonova, T. Meier, P. Sharapova, Physical Review A 107 (2023).","apa":"Rose, H., Vasil’ev, A. N., Tikhonova, O. V., Meier, T., &#38; Sharapova, P. (2023). Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field. <i>Physical Review A</i>, <i>107</i>(1), Article 013703. <a href=\"https://doi.org/10.1103/physreva.107.013703\">https://doi.org/10.1103/physreva.107.013703</a>"},"intvolume":"       107"},{"_id":"41035","department":[{"_id":"15"},{"_id":"170"},{"_id":"230"},{"_id":"569"},{"_id":"429"},{"_id":"35"}],"user_id":"16199","keyword":["Condensed Matter Physics","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"article_number":"2200408","language":[{"iso":"eng"}],"publication":"Laser &amp; Photonics Reviews","type":"journal_article","status":"public","date_updated":"2025-12-16T11:26:28Z","publisher":"Wiley","author":[{"first_name":"Polina R.","id":"60286","full_name":"Sharapova, Polina R.","last_name":"Sharapova"},{"last_name":"Kruk","full_name":"Kruk, Sergey S.","first_name":"Sergey S."},{"first_name":"Alexander S.","last_name":"Solntsev","full_name":"Solntsev, Alexander S."}],"date_created":"2023-01-30T18:24:45Z","title":"Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons","doi":"10.1002/lpor.202200408","publication_identifier":{"issn":["1863-8880","1863-8899"]},"publication_status":"published","year":"2023","citation":{"chicago":"Sharapova, Polina R., Sergey S. Kruk, and Alexander S. Solntsev. “Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons.” <i>Laser &#38;amp; Photonics Reviews</i>, 2023. <a href=\"https://doi.org/10.1002/lpor.202200408\">https://doi.org/10.1002/lpor.202200408</a>.","ieee":"P. R. Sharapova, S. S. Kruk, and A. S. Solntsev, “Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons,” <i>Laser &#38;amp; Photonics Reviews</i>, Art. no. 2200408, 2023, doi: <a href=\"https://doi.org/10.1002/lpor.202200408\">10.1002/lpor.202200408</a>.","ama":"Sharapova PR, Kruk SS, Solntsev AS. Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons. <i>Laser &#38;amp; Photonics Reviews</i>. Published online 2023. doi:<a href=\"https://doi.org/10.1002/lpor.202200408\">10.1002/lpor.202200408</a>","short":"P.R. Sharapova, S.S. Kruk, A.S. Solntsev, Laser &#38;amp; Photonics Reviews (2023).","mla":"Sharapova, Polina R., et al. “Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons.” <i>Laser &#38;amp; Photonics Reviews</i>, 2200408, Wiley, 2023, doi:<a href=\"https://doi.org/10.1002/lpor.202200408\">10.1002/lpor.202200408</a>.","bibtex":"@article{Sharapova_Kruk_Solntsev_2023, title={Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons}, DOI={<a href=\"https://doi.org/10.1002/lpor.202200408\">10.1002/lpor.202200408</a>}, number={2200408}, journal={Laser &#38;amp; Photonics Reviews}, publisher={Wiley}, author={Sharapova, Polina R. and Kruk, Sergey S. and Solntsev, Alexander S.}, year={2023} }","apa":"Sharapova, P. R., Kruk, S. S., &#38; Solntsev, A. S. (2023). Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons. <i>Laser &#38;amp; Photonics Reviews</i>, Article 2200408. <a href=\"https://doi.org/10.1002/lpor.202200408\">https://doi.org/10.1002/lpor.202200408</a>"}},{"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-<jats:italic>Q</jats:italic> cavities which strongly enhance the light–matter coupling. Cavities with low <jats:italic>Q</jats:italic>-factors are generally given less attention due to their high losses that quickly destroy quantum systems. However, bad cavities can be utilized for several applications, where lower <jats:italic>Q</jats:italic>-factors are required, e.g., to increase the spectral width of the cavity mode. In this work, we demonstrate that low-<jats:italic>Q</jats:italic> cavities can be beneficial for preparing specific electronic steady states when certain quantum states of light are applied. We investigate the interaction between quantum light with various statistics and matter represented by a Λ-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We show that cavity losses lead to non-trivial electronic steady states that can be controlled by the loss rate and the initial statistics of the quantum fields. We discuss the mechanism of the formation of such steady states on the basis of the equations of motion and present both analytical expressions and numerical simulations for such steady states.</jats:p>"}],"status":"public","type":"journal_article","publication":"New Journal of Physics","article_number":"063020","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}],"project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"37318","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"year":"2022","citation":{"ama":"Rose H, Tikhonova OV, Meier T, Sharapova P. Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities. <i>New Journal of Physics</i>. 2022;24(6). doi:<a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">10.1088/1367-2630/ac74d8</a>","ieee":"H. Rose, O. V. Tikhonova, T. Meier, and P. Sharapova, “Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities,” <i>New Journal of Physics</i>, vol. 24, no. 6, Art. no. 063020, 2022, doi: <a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">10.1088/1367-2630/ac74d8</a>.","chicago":"Rose, Hendrik, O V Tikhonova, Torsten Meier, and Polina Sharapova. “Steady States of Λ-Type Three-Level Systems Excited by Quantum Light with Various Photon Statistics in Lossy Cavities.” <i>New Journal of Physics</i> 24, no. 6 (2022). <a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">https://doi.org/10.1088/1367-2630/ac74d8</a>.","apa":"Rose, H., Tikhonova, O. V., Meier, T., &#38; Sharapova, P. (2022). Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities. <i>New Journal of Physics</i>, <i>24</i>(6), Article 063020. <a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">https://doi.org/10.1088/1367-2630/ac74d8</a>","short":"H. Rose, O.V. Tikhonova, T. Meier, P. Sharapova, New Journal of Physics 24 (2022).","bibtex":"@article{Rose_Tikhonova_Meier_Sharapova_2022, title={Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities}, volume={24}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">10.1088/1367-2630/ac74d8</a>}, number={6063020}, journal={New Journal of Physics}, publisher={IOP Publishing}, author={Rose, Hendrik and Tikhonova, O V and Meier, Torsten and Sharapova, Polina}, year={2022} }","mla":"Rose, Hendrik, et al. “Steady States of Λ-Type Three-Level Systems Excited by Quantum Light with Various Photon Statistics in Lossy Cavities.” <i>New Journal of Physics</i>, vol. 24, no. 6, 063020, IOP Publishing, 2022, doi:<a href=\"https://doi.org/10.1088/1367-2630/ac74d8\">10.1088/1367-2630/ac74d8</a>."},"intvolume":"        24","publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"issue":"6","title":"Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities","doi":"10.1088/1367-2630/ac74d8","date_updated":"2023-04-20T14:51:09Z","publisher":"IOP Publishing","date_created":"2023-01-18T10:56:13Z","author":[{"first_name":"Hendrik","full_name":"Rose, Hendrik","id":"55958","orcid":"0000-0002-3079-5428","last_name":"Rose"},{"full_name":"Tikhonova, O V","last_name":"Tikhonova","first_name":"O V"},{"full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"last_name":"Sharapova","full_name":"Sharapova, Polina","id":"60286","first_name":"Polina"}],"volume":24},{"publication_status":"published","citation":{"ieee":"H. Rose, O. V. Tikhonova, T. Meier, and P. Sharapova, “Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach,” in <i>Ultrafast Phenomena and Nanophotonics XXVI</i>, 2022, vol. 11999, doi: <a href=\"https://doi.org/10.1117/12.2608528\">10.1117/12.2608528</a>.","chicago":"Rose, Hendrik, Olga V. Tikhonova, Torsten Meier, and Polina Sharapova. “Theoretical Analysis of Correlations between Two Quantum Fields Exciting a Three-Level System Using the Cluster-Expansion Approach.” In <i>Ultrafast Phenomena and Nanophotonics XXVI</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi, Vol. 11999. SPIE Proceedings, 2022. <a href=\"https://doi.org/10.1117/12.2608528\">https://doi.org/10.1117/12.2608528</a>.","ama":"Rose H, Tikhonova OV, Meier T, Sharapova P. Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach. In: Betz M, Elezzabi AY, eds. <i>Ultrafast Phenomena and Nanophotonics XXVI</i>. Vol 11999. SPIE Proceedings. ; 2022. doi:<a href=\"https://doi.org/10.1117/12.2608528\">10.1117/12.2608528</a>","short":"H. Rose, O.V. Tikhonova, T. Meier, P. Sharapova, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXVI, 2022.","mla":"Rose, Hendrik, et al. “Theoretical Analysis of Correlations between Two Quantum Fields Exciting a Three-Level System Using the Cluster-Expansion Approach.” <i>Ultrafast Phenomena and Nanophotonics XXVI</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi, vol. 11999, 2022, doi:<a href=\"https://doi.org/10.1117/12.2608528\">10.1117/12.2608528</a>.","bibtex":"@inproceedings{Rose_Tikhonova_Meier_Sharapova_2022, series={SPIE Proceedings}, title={Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach}, volume={11999}, DOI={<a href=\"https://doi.org/10.1117/12.2608528\">10.1117/12.2608528</a>}, booktitle={Ultrafast Phenomena and Nanophotonics XXVI}, author={Rose, Hendrik and Tikhonova, Olga V. and Meier, Torsten and Sharapova, Polina}, editor={Betz, Markus and Elezzabi, Abdulhakem Y.}, year={2022}, collection={SPIE Proceedings} }","apa":"Rose, H., Tikhonova, O. V., Meier, T., &#38; Sharapova, P. (2022). Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach. In M. Betz &#38; A. Y. Elezzabi (Eds.), <i>Ultrafast Phenomena and Nanophotonics XXVI</i> (Vol. 11999). <a href=\"https://doi.org/10.1117/12.2608528\">https://doi.org/10.1117/12.2608528</a>"},"intvolume":"     11999","year":"2022","date_created":"2023-01-18T11:19:54Z","author":[{"id":"55958","full_name":"Rose, Hendrik","last_name":"Rose","orcid":"0000-0002-3079-5428","first_name":"Hendrik"},{"last_name":"Tikhonova","full_name":"Tikhonova, Olga V.","first_name":"Olga V."},{"first_name":"Torsten","id":"344","full_name":"Meier, Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072"},{"full_name":"Sharapova, Polina","id":"60286","last_name":"Sharapova","first_name":"Polina"}],"volume":11999,"date_updated":"2023-04-20T14:51:31Z","doi":"10.1117/12.2608528","title":"Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach","type":"conference","publication":"Ultrafast Phenomena and Nanophotonics XXVI","status":"public","editor":[{"first_name":"Markus","last_name":"Betz","full_name":"Betz, Markus"},{"last_name":"Elezzabi","full_name":"Elezzabi, Abdulhakem Y.","first_name":"Abdulhakem Y."}],"series_title":"SPIE Proceedings","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"37327","language":[{"iso":"eng"}]},{"publication":"Conference on Lasers and Electro-Optics: Applications and Technology","type":"conference","abstract":[{"lang":"eng","text":"We demonstrate theoretically and experimentally complex correlations in the photon numbers of two-mode quantum states using measurement-induced nonlinearity. For this, we combine the interference of coherent states and single photons with photon sub-traction."}],"status":"public","_id":"43744","department":[{"_id":"293"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"},{"_id":"35"},{"_id":"482"},{"_id":"706"},{"_id":"288"}],"user_id":"16199","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["978-1-957171-05-0"]},"publication_status":"published","year":"2022","page":"JTu3A. 17","citation":{"apa":"Meier, T., Hoepker, J. P., Protte, M., Eigner, C., Silberhorn, C., Sharapova, P. R., Sperling, J., &#38; Bartley, T. (2022). Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity. <i>Conference on Lasers and Electro-Optics: Applications and Technology</i>, JTu3A. 17. <a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17</a>","short":"T. Meier, J.P. Hoepker, M. Protte, C. Eigner, C. Silberhorn, P.R. Sharapova, J. Sperling, T. Bartley, in: Conference on Lasers and Electro-Optics: Applications and Technology, Optica Publishing Group, 2022, p. JTu3A. 17.","mla":"Meier, Torsten, et al. “Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity.” <i>Conference on Lasers and Electro-Optics: Applications and Technology</i>, Optica Publishing Group, 2022, p. JTu3A. 17, doi:<a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">10.1364/CLEO_AT.2022.JTu3A.17</a>.","bibtex":"@inproceedings{Meier_Hoepker_Protte_Eigner_Silberhorn_Sharapova_Sperling_Bartley_2022, title={Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity}, DOI={<a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">10.1364/CLEO_AT.2022.JTu3A.17</a>}, booktitle={Conference on Lasers and Electro-Optics: Applications and Technology}, publisher={Optica Publishing Group}, author={Meier, Torsten and Hoepker, Jan Philipp and Protte, Maximilian and Eigner, Christof and Silberhorn, Christine and Sharapova, Polina R. and Sperling, Jan and Bartley, Tim}, year={2022}, pages={JTu3A. 17} }","chicago":"Meier, Torsten, Jan Philipp Hoepker, Maximilian Protte, Christof Eigner, Christine Silberhorn, Polina R. Sharapova, Jan Sperling, and Tim Bartley. “Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity.” In <i>Conference on Lasers and Electro-Optics: Applications and Technology</i>, JTu3A. 17. Optica Publishing Group, 2022. <a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17</a>.","ieee":"T. Meier <i>et al.</i>, “Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity,” in <i>Conference on Lasers and Electro-Optics: Applications and Technology</i>, San Jose, California United States, 2022, p. JTu3A. 17, doi: <a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">10.1364/CLEO_AT.2022.JTu3A.17</a>.","ama":"Meier T, Hoepker JP, Protte M, et al. Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity. In: <i>Conference on Lasers and Electro-Optics: Applications and Technology</i>. Optica Publishing Group; 2022:JTu3A. 17. doi:<a href=\"https://doi.org/10.1364/CLEO_AT.2022.JTu3A.17\">10.1364/CLEO_AT.2022.JTu3A.17</a>"},"publisher":"Optica Publishing Group","date_updated":"2023-04-21T11:10:06Z","date_created":"2023-04-16T01:31:32Z","author":[{"full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten"},{"first_name":"Jan Philipp","last_name":"Hoepker","full_name":"Hoepker, Jan Philipp"},{"first_name":"Maximilian","id":"46170","full_name":"Protte, Maximilian","last_name":"Protte"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina R.","first_name":"Polina R."},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"title":"Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity","conference":{"location":"San Jose, California United States","end_date":"2022-05-20","start_date":"2022-05-15","name":"CLEO: Applications and Technology 2022"},"doi":"10.1364/CLEO_AT.2022.JTu3A.17","main_file_link":[{"url":"https://opg.optica.org/abstract.cfm?uri=CLEO_AT-2022-JTu3A.17"}]},{"publication_identifier":{"issn":["2073-8994"]},"publication_status":"published","issue":"3","year":"2022","intvolume":"        14","citation":{"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>.","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} }","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>","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>","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>."},"date_updated":"2025-12-16T11:27:11Z","publisher":"MDPI AG","volume":14,"author":[{"last_name":"Ferreri","full_name":"Ferreri, Alessandro","first_name":"Alessandro"},{"first_name":"Polina R.","full_name":"Sharapova, Polina R.","id":"60286","last_name":"Sharapova"}],"date_created":"2023-01-26T13:54:00Z","title":"Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer","doi":"10.3390/sym14030552","publication":"Symmetry","type":"journal_article","abstract":[{"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>","lang":"eng"}],"status":"public","_id":"40371","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"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"429"},{"_id":"230"},{"_id":"9"},{"_id":"27"}],"user_id":"16199","keyword":["Physics and Astronomy (miscellaneous)","General Mathematics","Chemistry (miscellaneous)","Computer Science (miscellaneous)"],"article_number":"552","language":[{"iso":"eng"}]},{"publication":"Journal of Physics: Photonics","type":"journal_article","status":"public","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."}],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"287"},{"_id":"35"},{"_id":"34"}],"user_id":"16199","_id":"30210","project":[{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"_id":"75","name":"TRR 142 - C5: TRR 142 - Subproject C5"},{"name":"TRR 142 - C2: TRR 142 - Subproject C2","_id":"72"},{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"}],"language":[{"iso":"eng"}],"keyword":["tet_topic_waveguide"],"related_material":{"link":[{"relation":"erratum","description":"Corrigendum for table C1","url":"https://doi.org/10.1088/2515-7647/acc70c"}]},"publication_identifier":{"issn":["2515-7647"]},"publication_status":"published","page":"025001","intvolume":"         4","citation":{"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>.","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>.","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>","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>","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>.","short":"L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova, Journal of Physics: Photonics 4 (2022) 025001.","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} }"},"year":"2022","volume":4,"date_created":"2022-03-07T09:51:50Z","author":[{"first_name":"Lena","last_name":"Ebers","id":"40428","full_name":"Ebers, Lena"},{"first_name":"Alessandro","last_name":"Ferreri","full_name":"Ferreri, Alessandro","id":"65609"},{"full_name":"Hammer, Manfred","id":"48077","last_name":"Hammer","orcid":"0000-0002-6331-9348","first_name":"Manfred"},{"full_name":"Albert, Maximilian","last_name":"Albert","first_name":"Maximilian"},{"full_name":"Meier, Cedrik","id":"20798","orcid":"https://orcid.org/0000-0002-3787-3572","last_name":"Meier","first_name":"Cedrik"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."}],"date_updated":"2025-12-16T11:31:04Z","publisher":"IOP Publishing","doi":"10.1088/2515-7647/ac5a5b","title":"Flexible source of correlated photons based on LNOI rib waveguides"},{"language":[{"iso":"eng"}],"_id":"53290","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"230"}],"abstract":[{"text":"In this report, we consider a semiconductor nanostructure in an optical cavity that is coupled to quantum light. We describe the semiconductor nanostructure with a parabolic band structure in a 1D k-space, while we assume a single-mode quantum field. The 1D<br> system is chosen for simplicity in both the analytical and the numerical treatment and paves the way for the description of 2D structures in the future. Therefore, instead of using parameters which are realistic for 1D systems, we rather use parameters which qualitatively correspond to 2D GaAs structures.","lang":"eng"}],"status":"public","type":"report","title":"Excitation of an electronic band structure by a single-photon Fock state","doi":"10.5281/ZENODO.5774985","publisher":"LibreCat University","date_updated":"2024-04-05T09:58:46Z","author":[{"first_name":"H.","last_name":"Rose","full_name":"Rose, H."},{"full_name":"Vasil'ev, A.N.","last_name":"Vasil'ev","first_name":"A.N."},{"full_name":"Tikhonova, O.V.","last_name":"Tikhonova","first_name":"O.V."},{"full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"first_name":"Polina R.","id":"60286","full_name":"Sharapova, Polina R.","last_name":"Sharapova"}],"date_created":"2024-04-05T09:27:22Z","year":"2021","citation":{"mla":"Rose, H., et al. <i>Excitation of an Electronic Band Structure by a Single-Photon Fock State</i>. LibreCat University, 2021, doi:<a href=\"https://doi.org/10.5281/ZENODO.5774985\">10.5281/ZENODO.5774985</a>.","short":"H. Rose, A.N. Vasil’ev, O.V. Tikhonova, T. Meier, P.R. Sharapova, Excitation of an Electronic Band Structure by a Single-Photon Fock State, LibreCat University, 2021.","bibtex":"@book{Rose_Vasil’ev_Tikhonova_Meier_Sharapova_2021, title={Excitation of an electronic band structure by a single-photon Fock state}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.5774985\">10.5281/ZENODO.5774985</a>}, publisher={LibreCat University}, author={Rose, H. and Vasil’ev, A.N. and Tikhonova, O.V. and Meier, Torsten and Sharapova, Polina R.}, year={2021} }","apa":"Rose, H., Vasil’ev, A. N., Tikhonova, O. V., Meier, T., &#38; Sharapova, P. R. (2021). <i>Excitation of an electronic band structure by a single-photon Fock state</i>. LibreCat University. <a href=\"https://doi.org/10.5281/ZENODO.5774985\">https://doi.org/10.5281/ZENODO.5774985</a>","ama":"Rose H, Vasil’ev AN, Tikhonova OV, Meier T, Sharapova PR. <i>Excitation of an Electronic Band Structure by a Single-Photon Fock State</i>. LibreCat University; 2021. doi:<a href=\"https://doi.org/10.5281/ZENODO.5774985\">10.5281/ZENODO.5774985</a>","ieee":"H. Rose, A. N. Vasil’ev, O. V. Tikhonova, T. Meier, and P. R. Sharapova, <i>Excitation of an electronic band structure by a single-photon Fock state</i>. LibreCat University, 2021.","chicago":"Rose, H., A.N. Vasil’ev, O.V. Tikhonova, Torsten Meier, and Polina R. Sharapova. <i>Excitation of an Electronic Band Structure by a Single-Photon Fock State</i>. LibreCat University, 2021. <a href=\"https://doi.org/10.5281/ZENODO.5774985\">https://doi.org/10.5281/ZENODO.5774985</a>."}}]