[{"year":"2025","issue":"3","title":"Entanglement between dependent degrees of freedom: Quasiparticle correlations","publisher":"American Physical Society (APS)","date_created":"2025-09-12T10:37:34Z","publication":"Physical Review A","language":[{"iso":"eng"}],"intvolume":"       111","citation":{"short":"F. Barkhausen, L. Ares Santos, S. Schumacher, J. Sperling, Physical Review A 111 (2025).","mla":"Barkhausen, Franziska, et al. “Entanglement between Dependent Degrees of Freedom: Quasiparticle Correlations.” <i>Physical Review A</i>, vol. 111, no. 3, 032404, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>.","bibtex":"@article{Barkhausen_Ares Santos_Schumacher_Sperling_2025, title={Entanglement between dependent degrees of freedom: Quasiparticle correlations}, volume={111}, DOI={<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>}, number={3032404}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Barkhausen, Franziska and Ares Santos, Laura and Schumacher, Stefan and Sperling, Jan}, year={2025} }","apa":"Barkhausen, F., Ares Santos, L., Schumacher, S., &#38; Sperling, J. (2025). Entanglement between dependent degrees of freedom: Quasiparticle correlations. <i>Physical Review A</i>, <i>111</i>(3), Article 032404. <a href=\"https://doi.org/10.1103/physreva.111.032404\">https://doi.org/10.1103/physreva.111.032404</a>","ama":"Barkhausen F, Ares Santos L, Schumacher S, Sperling J. Entanglement between dependent degrees of freedom: Quasiparticle correlations. <i>Physical Review A</i>. 2025;111(3). doi:<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>","ieee":"F. Barkhausen, L. Ares Santos, S. Schumacher, and J. Sperling, “Entanglement between dependent degrees of freedom: Quasiparticle correlations,” <i>Physical Review A</i>, vol. 111, no. 3, Art. no. 032404, 2025, doi: <a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>.","chicago":"Barkhausen, Franziska, Laura Ares Santos, Stefan Schumacher, and Jan Sperling. “Entanglement between Dependent Degrees of Freedom: Quasiparticle Correlations.” <i>Physical Review A</i> 111, no. 3 (2025). <a href=\"https://doi.org/10.1103/physreva.111.032404\">https://doi.org/10.1103/physreva.111.032404</a>."},"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","doi":"10.1103/physreva.111.032404","date_updated":"2025-09-12T10:42:16Z","volume":111,"author":[{"first_name":"Franziska","last_name":"Barkhausen","full_name":"Barkhausen, Franziska","id":"63631"},{"last_name":"Ares Santos","full_name":"Ares Santos, Laura","first_name":"Laura"},{"id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","first_name":"Stefan"},{"orcid":"0000-0002-5844-3205","last_name":"Sperling","id":"75127","full_name":"Sperling, Jan","first_name":"Jan"}],"status":"public","type":"journal_article","article_number":"032404","_id":"61245","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"61","name":"TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten"},{"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":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"623"},{"_id":"429"}],"user_id":"16199"},{"doi":"10.48550/ARXIV.2507.07099","title":"Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities","date_created":"2025-08-25T11:15:22Z","author":[{"first_name":"Jan","last_name":"Wingenbach","id":"69187","full_name":"Wingenbach, Jan"},{"first_name":"Laura ","full_name":"Ares Santos, Laura ","last_name":"Ares Santos"},{"id":"59416","full_name":"Ma, Xuekai","last_name":"Ma","first_name":"Xuekai"},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","id":"75127","full_name":"Sperling, Jan","first_name":"Jan"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"publisher":"Arxiv","date_updated":"2025-12-05T13:55:48Z","citation":{"apa":"Wingenbach, J., Ares Santos, L., Ma, X., Sperling, J., &#38; Schumacher, S. (2025). Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities. <i>Arxiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">https://doi.org/10.48550/ARXIV.2507.07099</a>","bibtex":"@article{Wingenbach_Ares Santos_Ma_Sperling_Schumacher_2025, title={Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities}, DOI={<a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">10.48550/ARXIV.2507.07099</a>}, journal={Arxiv}, publisher={Arxiv}, author={Wingenbach, Jan and Ares Santos, Laura  and Ma, Xuekai and Sperling, Jan and Schumacher, Stefan}, year={2025} }","short":"J. Wingenbach, L. Ares Santos, X. Ma, J. Sperling, S. Schumacher, Arxiv (2025).","mla":"Wingenbach, Jan, et al. “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities.” <i>Arxiv</i>, Arxiv, 2025, doi:<a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">10.48550/ARXIV.2507.07099</a>.","ama":"Wingenbach J, Ares Santos L, Ma X, Sperling J, Schumacher S. Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities. <i>Arxiv</i>. Published online 2025. doi:<a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">10.48550/ARXIV.2507.07099</a>","chicago":"Wingenbach, Jan, Laura  Ares Santos, Xuekai Ma, Jan Sperling, and Stefan Schumacher. “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities.” <i>Arxiv</i>, 2025. <a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">https://doi.org/10.48550/ARXIV.2507.07099</a>.","ieee":"J. Wingenbach, L. Ares Santos, X. Ma, J. Sperling, and S. Schumacher, “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities,” <i>Arxiv</i>, 2025, doi: <a href=\"https://doi.org/10.48550/ARXIV.2507.07099\">10.48550/ARXIV.2507.07099</a>."},"year":"2025","language":[{"iso":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"705"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"27"}],"user_id":"16199","_id":"60992","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"_id":"56","name":"TRR 142 - Project Area C"}],"status":"public","abstract":[{"text":"Non-Hermitian systems hosting exceptional points (EPs) exhibit enhanced sensitivity and unconventional mode dynamics. Going beyond isolated EPs, here we report on the existence of exceptional rings (ERs) in planar optical resonators with specific form of circular dichroism and TE-TM splitting. Such exceptional rings possess intriguing topologies as discussed earlier for condensed matter systems, but they remain virtually unexplored in presence of nonlinearity, for which our photonic platform is ideal. We find that when Kerr-type nonlinearity (or saturable gain) is introduced, the linear ER splits into two concentric ERs, with the larger-radius ring being a ring of third-order EPs. Transitioning from linear to nonlinear regime, we present a rigorous analysis of spectral topology and report enhanced and adjustable perturbation response in the nonlinear regime. Whereas certain features are specific to our system, the results on non-Hermitian spectral topology and nonlinearity-enhanced perturbation response are generic and equally relevant to a broad class of other nonlinear non-Hermitian systems, providing a universal framework for engineering ERs and EPs in nonlinear non-Hermitian systems.","lang":"eng"}],"publication":"Arxiv","type":"journal_article"},{"type":"journal_article","publication":"Physical Review Research","abstract":[{"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>","lang":"eng"}],"status":"public","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"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":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"_id":"62980","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"706"},{"_id":"636"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"article_number":"033062","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"issue":"3","year":"2025","citation":{"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>.","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} }","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>.","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>"},"intvolume":"         7","publisher":"American Physical Society (APS)","date_updated":"2025-12-09T09:10:01Z","author":[{"full_name":"Kopylov, Denis A.","last_name":"Kopylov","first_name":"Denis A."},{"id":"85279","full_name":"Offen, Christian","last_name":"Offen","orcid":"0000-0002-5940-8057","first_name":"Christian"},{"last_name":"Ares","full_name":"Ares, Laura","first_name":"Laura"},{"last_name":"Wembe Moafo","full_name":"Wembe Moafo, Boris Edgar","id":"95394","first_name":"Boris Edgar"},{"full_name":"Ober-Blöbaum, Sina","id":"16494","last_name":"Ober-Blöbaum","first_name":"Sina"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten"},{"last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina R.","first_name":"Polina R."},{"id":"75127","full_name":"Sperling, Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling","first_name":"Jan"}],"date_created":"2025-12-09T09:08:39Z","volume":7,"title":"Multiphoton, multimode state classification for nonlinear optical circuits","doi":"10.1103/sv6z-v1gk"},{"title":"Multiphoton, multimode state classification for nonlinear optical circuits","date_created":"2025-12-09T08:59:27Z","author":[{"orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"},{"first_name":"Polina R.","last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286"},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"first_name":"Sina","last_name":"Ober-Blöbaum","id":"16494","full_name":"Ober-Blöbaum, Sina"},{"last_name":"Wembe Moafo","id":"95394","full_name":"Wembe Moafo, Boris Edgar","first_name":"Boris Edgar"},{"first_name":"Christian","full_name":"Offen, Christian","id":"85279","last_name":"Offen","orcid":"0000-0002-5940-8057"}],"date_updated":"2025-12-09T09:10:23Z","citation":{"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>.","short":"T. Meier, P.R. Sharapova, J. Sperling, S. Ober-Blöbaum, B.E. Wembe Moafo, C. Offen, (2025).","mla":"Meier, Torsten, et al. <i>Multiphoton, Multimode State Classification for Nonlinear Optical Circuits</i>. 2025.","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} }","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","language":[{"iso":"eng"}],"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"706"},{"_id":"636"},{"_id":"230"},{"_id":"623"},{"_id":"429"},{"_id":"35"}],"project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_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"}],"_id":"62979","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."}],"type":"preprint"},{"language":[{"iso":"eng"}],"publication":"Physical Review Research","abstract":[{"text":"<jats:p>Bell measurements, entailing the projection onto one of the Bell states, play a key role in quantum information and communication, where the outcome of a variety of protocols crucially depends on the success probability of such measurements. Although in the case of qubit systems, Bell measurements can be implemented using only linear optical components, the same result is no longer true for qudits, where at least the use of ancillary photons is required. In order to circumvent this limitation, one possibility is to introduce nonlinear effects. In this work, we adopt the latter approach and propose a scalable Bell measurement scheme for high-dimensional states, exploiting multiple squeezer devices applied to a linear optical circuit for discriminating the different Bell states. Our approach does not require ancillary photons, is not limited by the dimension of the quantum states, and is experimentally scalable, thus paving the way toward the realization of an effective high-dimensional Bell measurement.</jats:p>","lang":"eng"}],"date_created":"2025-12-10T13:34:53Z","publisher":"American Physical Society (APS)","title":"Predetection squeezing as a resource for high-dimensional Bell-state measurements","issue":"2","year":"2025","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"429"}],"user_id":"75127","_id":"63021","article_number":"023038","type":"journal_article","status":"public","volume":7,"author":[{"first_name":"Luca","last_name":"Bianchi","full_name":"Bianchi, Luca"},{"first_name":"Carlo","last_name":"Marconi","full_name":"Marconi, Carlo"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"full_name":"Bacco, Davide","last_name":"Bacco","first_name":"Davide"}],"date_updated":"2025-12-10T13:36:11Z","doi":"10.1103/physrevresearch.7.023038","publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","intvolume":"         7","citation":{"apa":"Bianchi, L., Marconi, C., Sperling, J., &#38; Bacco, D. (2025). Predetection squeezing as a resource for high-dimensional Bell-state measurements. <i>Physical Review Research</i>, <i>7</i>(2), Article 023038. <a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">https://doi.org/10.1103/physrevresearch.7.023038</a>","bibtex":"@article{Bianchi_Marconi_Sperling_Bacco_2025, title={Predetection squeezing as a resource for high-dimensional Bell-state measurements}, volume={7}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">10.1103/physrevresearch.7.023038</a>}, number={2023038}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Bianchi, Luca and Marconi, Carlo and Sperling, Jan and Bacco, Davide}, year={2025} }","short":"L. Bianchi, C. Marconi, J. Sperling, D. Bacco, Physical Review Research 7 (2025).","mla":"Bianchi, Luca, et al. “Predetection Squeezing as a Resource for High-Dimensional Bell-State Measurements.” <i>Physical Review Research</i>, vol. 7, no. 2, 023038, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">10.1103/physrevresearch.7.023038</a>.","ieee":"L. Bianchi, C. Marconi, J. Sperling, and D. Bacco, “Predetection squeezing as a resource for high-dimensional Bell-state measurements,” <i>Physical Review Research</i>, vol. 7, no. 2, Art. no. 023038, 2025, doi: <a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">10.1103/physrevresearch.7.023038</a>.","chicago":"Bianchi, Luca, Carlo Marconi, Jan Sperling, and Davide Bacco. “Predetection Squeezing as a Resource for High-Dimensional Bell-State Measurements.” <i>Physical Review Research</i> 7, no. 2 (2025). <a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">https://doi.org/10.1103/physrevresearch.7.023038</a>.","ama":"Bianchi L, Marconi C, Sperling J, Bacco D. Predetection squeezing as a resource for high-dimensional Bell-state measurements. <i>Physical Review Research</i>. 2025;7(2). doi:<a href=\"https://doi.org/10.1103/physrevresearch.7.023038\">10.1103/physrevresearch.7.023038</a>"}},{"title":"Unified boson sampling","publisher":"American Physical Society (APS)","date_created":"2026-01-09T08:02:57Z","year":"2025","issue":"4","language":[{"iso":"eng"}],"abstract":[{"text":"<jats:p>Boson sampling is a key candidate for demonstrating quantum advantage and has already yielded significant advances in quantum simulation, machine learning, and graph theory. In this work, a unification and extension of distinct forms of boson sampling is developed. The devised protocol merges discrete-variable scattershot boson sampling with continuous-variable Gaussian boson sampling. Therefore, it is rendered possible to harness the complexity of more interesting states, such as squeezed photons, in advanced sampling protocols. A generating function formalism is developed for the joint description of multiphoton and multimode light undergoing Gaussian transformations. The resulting analytical tools enable one to explore interfaces of different photonic quantum-information-processing platforms. A numerical simulation of unified sampling is carried out, benchmarking its performance, complexity, and scalability. Entanglement is characterized to exemplify the generation of quantum correlations from the nonlinear interactions of a unified sampler.</jats:p>","lang":"eng"}],"publication":"Physical Review Research","doi":"10.1103/8hy1-m5gg","date_updated":"2026-01-09T08:03:38Z","author":[{"full_name":"Bianchi, Luca","last_name":"Bianchi","first_name":"Luca"},{"last_name":"Marconi","full_name":"Marconi, Carlo","first_name":"Carlo"},{"first_name":"Laura","full_name":"Ares, Laura","last_name":"Ares"},{"first_name":"Davide","full_name":"Bacco, Davide","last_name":"Bacco"},{"first_name":"Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling","full_name":"Sperling, Jan","id":"75127"}],"volume":7,"citation":{"apa":"Bianchi, L., Marconi, C., Ares, L., Bacco, D., &#38; Sperling, J. (2025). Unified boson sampling. <i>Physical Review Research</i>, <i>7</i>(4), Article L042068. <a href=\"https://doi.org/10.1103/8hy1-m5gg\">https://doi.org/10.1103/8hy1-m5gg</a>","bibtex":"@article{Bianchi_Marconi_Ares_Bacco_Sperling_2025, title={Unified boson sampling}, volume={7}, DOI={<a href=\"https://doi.org/10.1103/8hy1-m5gg\">10.1103/8hy1-m5gg</a>}, number={4L042068}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Bianchi, Luca and Marconi, Carlo and Ares, Laura and Bacco, Davide and Sperling, Jan}, year={2025} }","short":"L. Bianchi, C. Marconi, L. Ares, D. Bacco, J. Sperling, Physical Review Research 7 (2025).","mla":"Bianchi, Luca, et al. “Unified Boson Sampling.” <i>Physical Review Research</i>, vol. 7, no. 4, L042068, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/8hy1-m5gg\">10.1103/8hy1-m5gg</a>.","ama":"Bianchi L, Marconi C, Ares L, Bacco D, Sperling J. Unified boson sampling. <i>Physical Review Research</i>. 2025;7(4). doi:<a href=\"https://doi.org/10.1103/8hy1-m5gg\">10.1103/8hy1-m5gg</a>","chicago":"Bianchi, Luca, Carlo Marconi, Laura Ares, Davide Bacco, and Jan Sperling. “Unified Boson Sampling.” <i>Physical Review Research</i> 7, no. 4 (2025). <a href=\"https://doi.org/10.1103/8hy1-m5gg\">https://doi.org/10.1103/8hy1-m5gg</a>.","ieee":"L. Bianchi, C. Marconi, L. Ares, D. Bacco, and J. Sperling, “Unified boson sampling,” <i>Physical Review Research</i>, vol. 7, no. 4, Art. no. 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Lüders <i>et al.</i>, “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography,” <i>Physical Review Letters</i>, vol. 130, no. 11, Art. no. 113601, 2023, doi: <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>.","chicago":"Lüders, Carolin, Matthias Pukrop, Franziska Barkhausen, Elena Rozas, Christian Schneider, Sven Höfling, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography.” <i>Physical Review Letters</i> 130, no. 11 (2023). <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">https://doi.org/10.1103/physrevlett.130.113601</a>.","ama":"Lüders C, Pukrop M, Barkhausen F, et al. Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography. <i>Physical Review Letters</i>. 2023;130(11). doi:<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>","apa":"Lüders, C., Pukrop, M., Barkhausen, F., Rozas, E., Schneider, C., Höfling, S., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2023). Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography. <i>Physical Review Letters</i>, <i>130</i>(11), Article 113601. <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">https://doi.org/10.1103/physrevlett.130.113601</a>","short":"C. Lüders, M. Pukrop, F. Barkhausen, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, Physical Review Letters 130 (2023).","mla":"Lüders, Carolin, et al. “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography.” <i>Physical Review Letters</i>, vol. 130, no. 11, 113601, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>.","bibtex":"@article{Lüders_Pukrop_Barkhausen_Rozas_Schneider_Höfling_Sperling_Schumacher_Aßmann_2023, title={Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography}, volume={130}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>}, number={11113601}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Lüders, Carolin and Pukrop, Matthias and Barkhausen, Franziska and Rozas, Elena and Schneider, Christian and Höfling, Sven and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2023} }"},"intvolume":"       130","date_updated":"2023-04-20T15:28:42Z","publisher":"American Physical Society (APS)","author":[{"first_name":"Carolin","last_name":"Lüders","full_name":"Lüders, Carolin"},{"first_name":"Matthias","full_name":"Pukrop, Matthias","id":"64535","last_name":"Pukrop"},{"id":"63631","full_name":"Barkhausen, Franziska","last_name":"Barkhausen","first_name":"Franziska"},{"last_name":"Rozas","full_name":"Rozas, Elena","first_name":"Elena"},{"first_name":"Christian","full_name":"Schneider, Christian","last_name":"Schneider"},{"first_name":"Sven","full_name":"Höfling, Sven","last_name":"Höfling"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"},{"last_name":"Aßmann","full_name":"Aßmann, Marc","first_name":"Marc"}],"date_created":"2023-03-14T07:50:56Z","volume":130,"title":"Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography","doi":"10.1103/physrevlett.130.113601"},{"volume":13,"date_created":"2025-09-12T11:40:26Z","author":[{"full_name":"Lüders, Carolin","last_name":"Lüders","first_name":"Carolin"},{"last_name":"Barkhausen","full_name":"Barkhausen, Franziska","id":"63631","first_name":"Franziska"},{"first_name":"Matthias","full_name":"Pukrop, Matthias","last_name":"Pukrop"},{"first_name":"Elena","full_name":"Rozas, Elena","last_name":"Rozas"},{"id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271"},{"full_name":"Aßmann, Marc","last_name":"Aßmann","first_name":"Marc"}],"date_updated":"2025-09-12T11:41:42Z","publisher":"Optica Publishing Group","doi":"10.1364/ome.497006","title":"Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]","issue":"11","publication_identifier":{"issn":["2159-3930"]},"publication_status":"published","intvolume":"        13","citation":{"mla":"Lüders, Carolin, et al. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i>, vol. 13, no. 11, 2997, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","bibtex":"@article{Lüders_Barkhausen_Pukrop_Rozas_Sperling_Schumacher_Aßmann_2023, title={Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>}, number={112997}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Lüders, Carolin and Barkhausen, Franziska and Pukrop, Matthias and Rozas, Elena and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2023} }","short":"C. Lüders, F. Barkhausen, M. Pukrop, E. Rozas, J. Sperling, S. Schumacher, M. Aßmann, Optical Materials Express 13 (2023).","apa":"Lüders, C., Barkhausen, F., Pukrop, M., Rozas, E., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2023). Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>, <i>13</i>(11), Article 2997. <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>","ieee":"C. Lüders <i>et al.</i>, “Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited],” <i>Optical Materials Express</i>, vol. 13, no. 11, Art. no. 2997, 2023, doi: <a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","chicago":"Lüders, Carolin, Franziska Barkhausen, Matthias Pukrop, Elena Rozas, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i> 13, no. 11 (2023). <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>.","ama":"Lüders C, Barkhausen F, Pukrop M, et al. Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>. 2023;13(11). doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>"},"year":"2023","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"623"}],"user_id":"16199","_id":"61266","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"language":[{"iso":"eng"}],"article_number":"2997","publication":"Optical Materials Express","type":"journal_article","status":"public","abstract":[{"text":"<jats:p>This review examines the use of continuous-variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. Special emphasis is placed on multichannel homodyne detection as a powerful tool to measure the quantum coherence and the full density matrix of a polariton system. Observations, such as coherence times that exceed the nanosecond scale obtained by monitoring the temporal decay of quantum coherence in a polariton condensate, are discussed. Proof-of-concept experiments and numerical simulations that demonstrate the enhanced resourcefulness of the produced system states for modern quantum protocols are assessed. The combination of tailored resource quantifiers and ultrafast spectroscopy techniques that have recently been demonstrated paves the way for future applications of quantum information technologies.</jats:p>","lang":"eng"}]},{"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"}],"publisher":"Optica Publishing Group","date_updated":"2023-04-21T11:10:06Z","author":[{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"},{"first_name":"Jan Philipp","last_name":"Hoepker","full_name":"Hoepker, Jan Philipp"},{"last_name":"Protte","full_name":"Protte, Maximilian","id":"46170","first_name":"Maximilian"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Polina R.","last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina R."},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127","first_name":"Jan"},{"first_name":"Tim","last_name":"Bartley","full_name":"Bartley, Tim","id":"49683"}],"date_created":"2023-04-16T01:31:32Z","year":"2022","page":"JTu3A. 17","citation":{"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.","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} }","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>.","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>","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>","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>.","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>."},"publication_identifier":{"isbn":["978-1-957171-05-0"]},"publication_status":"published","language":[{"iso":"eng"}],"_id":"43744","department":[{"_id":"293"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"},{"_id":"35"},{"_id":"482"},{"_id":"706"},{"_id":"288"}],"user_id":"16199","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","publication":"Conference on Lasers and Electro-Optics: Applications and Technology","type":"conference"},{"title":"Direct Measurement of Higher-Order Nonlinear Polarization Squeezing","date_created":"2022-12-23T07:57:24Z","publisher":"American Physical Society (APS)","year":"2022","issue":"26","language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy"],"publication":"Physical Review Letters","doi":"10.1103/physrevlett.129.263601","author":[{"first_name":"Nidhin","id":"71403","full_name":"Prasannan, Nidhin","last_name":"Prasannan"},{"orcid":"0000-0002-5844-3205","last_name":"Sperling","full_name":"Sperling, Jan","id":"75127","first_name":"Jan"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"volume":129,"date_updated":"2023-04-20T15:15:18Z","citation":{"ieee":"N. Prasannan, J. Sperling, B. Brecht, and C. Silberhorn, “Direct Measurement of Higher-Order Nonlinear Polarization Squeezing,” <i>Physical Review Letters</i>, vol. 129, no. 26, Art. no. 263601, 2022, doi: <a href=\"https://doi.org/10.1103/physrevlett.129.263601\">10.1103/physrevlett.129.263601</a>.","chicago":"Prasannan, Nidhin, Jan Sperling, Benjamin Brecht, and Christine Silberhorn. “Direct Measurement of Higher-Order Nonlinear Polarization Squeezing.” <i>Physical Review Letters</i> 129, no. 26 (2022). <a href=\"https://doi.org/10.1103/physrevlett.129.263601\">https://doi.org/10.1103/physrevlett.129.263601</a>.","ama":"Prasannan N, Sperling J, Brecht B, Silberhorn C. Direct Measurement of Higher-Order Nonlinear Polarization Squeezing. <i>Physical Review Letters</i>. 2022;129(26). doi:<a href=\"https://doi.org/10.1103/physrevlett.129.263601\">10.1103/physrevlett.129.263601</a>","mla":"Prasannan, Nidhin, et al. “Direct Measurement of Higher-Order Nonlinear Polarization Squeezing.” <i>Physical Review Letters</i>, vol. 129, no. 26, 263601, American Physical Society (APS), 2022, doi:<a href=\"https://doi.org/10.1103/physrevlett.129.263601\">10.1103/physrevlett.129.263601</a>.","bibtex":"@article{Prasannan_Sperling_Brecht_Silberhorn_2022, title={Direct Measurement of Higher-Order Nonlinear Polarization Squeezing}, volume={129}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.129.263601\">10.1103/physrevlett.129.263601</a>}, number={26263601}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Prasannan, Nidhin and Sperling, Jan and Brecht, Benjamin and Silberhorn, Christine}, year={2022} }","short":"N. Prasannan, J. Sperling, B. Brecht, C. Silberhorn, Physical Review Letters 129 (2022).","apa":"Prasannan, N., Sperling, J., Brecht, B., &#38; Silberhorn, C. (2022). Direct Measurement of Higher-Order Nonlinear Polarization Squeezing. <i>Physical Review Letters</i>, <i>129</i>(26), Article 263601. <a href=\"https://doi.org/10.1103/physrevlett.129.263601\">https://doi.org/10.1103/physrevlett.129.263601</a>"},"intvolume":"       129","publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"article_number":"263601","user_id":"16199","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"35"}],"_id":"34884","status":"public","type":"journal_article"},{"language":[{"iso":"eng"}],"abstract":[{"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.","lang":"eng"}],"publication":"Physical Review A","title":"Driven Gaussian quantum walks","date_created":"2022-04-20T06:38:07Z","publisher":"American Physical Society (APS)","year":"2022","issue":"4","article_type":"original","article_number":"042210","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"user_id":"68236","_id":"30921","project":[{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142: TRR 142","_id":"53"}],"status":"public","type":"journal_article","doi":"10.1103/physreva.105.042210","main_file_link":[{"url":"https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.042210"}],"volume":105,"author":[{"id":"68236","full_name":"Held, Philip","last_name":"Held","first_name":"Philip"},{"last_name":"Engelkemeier","full_name":"Engelkemeier, Melanie","first_name":"Melanie"},{"first_name":"Syamsundar","full_name":"De, Syamsundar","last_name":"De"},{"first_name":"Sonja","last_name":"Barkhofen","full_name":"Barkhofen, Sonja","id":"48188"},{"first_name":"Jan","full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_updated":"2026-01-09T09:50:22Z","intvolume":"       105","citation":{"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>.","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>","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>","short":"P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn, Physical Review A 105 (2022).","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>.","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} }"},"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published"},{"publication":"Physical Review A","type":"journal_article","status":"public","_id":"26889","project":[{"_id":"53","name":"TRR 142: TRR 142"},{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - C2: TRR 142 - Subproject C2","_id":"72"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"569"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"user_id":"16199","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","year":"2021","citation":{"apa":"Luo, K. H., Santandrea, M., Stefszky, M., Sperling, J., Massaro, M., Ferreri, A., Sharapova, P., Herrmann, H., &#38; Silberhorn, C. (2021). Quantum optical coherence: From linear to nonlinear interferometers. <i>Physical Review A</i>. <a href=\"https://doi.org/10.1103/physreva.104.043707\">https://doi.org/10.1103/physreva.104.043707</a>","short":"K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).","bibtex":"@article{Luo_Santandrea_Stefszky_Sperling_Massaro_Ferreri_Sharapova_Herrmann_Silberhorn_2021, title={Quantum optical coherence: From linear to nonlinear interferometers}, DOI={<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>}, journal={Physical Review A}, author={Luo, Kai Hong and Santandrea, Matteo and Stefszky, Michael and Sperling, Jan and Massaro, Marcello and Ferreri, Alessandro and Sharapova, Polina and Herrmann, Harald and Silberhorn, Christine}, year={2021} }","mla":"Luo, Kai Hong, et al. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.” <i>Physical Review A</i>, 2021, doi:<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>.","ama":"Luo KH, Santandrea M, Stefszky M, et al. Quantum optical coherence: From linear to nonlinear interferometers. <i>Physical Review A</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>","chicago":"Luo, Kai Hong, Matteo Santandrea, Michael Stefszky, Jan Sperling, Marcello Massaro, Alessandro Ferreri, Polina Sharapova, Harald Herrmann, and Christine Silberhorn. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.” <i>Physical Review A</i>, 2021. <a href=\"https://doi.org/10.1103/physreva.104.043707\">https://doi.org/10.1103/physreva.104.043707</a>.","ieee":"K. H. Luo <i>et al.</i>, “Quantum optical coherence: From linear to nonlinear interferometers,” <i>Physical Review A</i>, 2021, doi: <a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>."},"date_updated":"2023-04-20T15:08:25Z","date_created":"2021-10-26T12:42:16Z","author":[{"last_name":"Luo","orcid":"0000-0003-1008-4976","id":"36389","full_name":"Luo, Kai Hong","first_name":"Kai Hong"},{"orcid":"0000-0001-5718-358X","last_name":"Santandrea","full_name":"Santandrea, Matteo","id":"55095","first_name":"Matteo"},{"last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael","first_name":"Michael"},{"orcid":"0000-0002-5844-3205","last_name":"Sperling","full_name":"Sperling, Jan","id":"75127","first_name":"Jan"},{"first_name":"Marcello","last_name":"Massaro","orcid":"0000-0002-2539-7652","id":"59545","full_name":"Massaro, Marcello"},{"first_name":"Alessandro","last_name":"Ferreri","id":"65609","full_name":"Ferreri, Alessandro"},{"last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina","first_name":"Polina"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"}],"title":"Quantum optical coherence: From linear to nonlinear interferometers","doi":"10.1103/physreva.104.043707"},{"author":[{"last_name":"Lüders","full_name":"Lüders, Carolin","first_name":"Carolin"},{"first_name":"Matthias","id":"64535","full_name":"Pukrop, Matthias","last_name":"Pukrop"},{"full_name":"Rozas, Elena","last_name":"Rozas","first_name":"Elena"},{"first_name":"Christian","full_name":"Schneider, Christian","last_name":"Schneider"},{"full_name":"Höfling, Sven","last_name":"Höfling","first_name":"Sven"},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","id":"75127","full_name":"Sperling, Jan","first_name":"Jan"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","last_name":"Schumacher","orcid":"0000-0003-4042-4951"},{"last_name":"Aßmann","full_name":"Aßmann, Marc","first_name":"Marc"}],"date_created":"2021-10-15T16:00:39Z","date_updated":"2023-04-20T15:11:36Z","doi":"10.1103/prxquantum.2.030320","title":"Quantifying Quantum Coherence in Polariton Condensates","publication_status":"published","publication_identifier":{"issn":["2691-3399"]},"citation":{"ama":"Lüders C, Pukrop M, Rozas E, et al. Quantifying Quantum Coherence in Polariton Condensates. <i>PRX Quantum</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1103/prxquantum.2.030320\">10.1103/prxquantum.2.030320</a>","ieee":"C. Lüders <i>et al.</i>, “Quantifying Quantum Coherence in Polariton Condensates,” <i>PRX Quantum</i>, 2021, doi: <a href=\"https://doi.org/10.1103/prxquantum.2.030320\">10.1103/prxquantum.2.030320</a>.","chicago":"Lüders, Carolin, Matthias Pukrop, Elena Rozas, Christian Schneider, Sven Höfling, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Quantifying Quantum Coherence in Polariton Condensates.” <i>PRX Quantum</i>, 2021. <a href=\"https://doi.org/10.1103/prxquantum.2.030320\">https://doi.org/10.1103/prxquantum.2.030320</a>.","apa":"Lüders, C., Pukrop, M., Rozas, E., Schneider, C., Höfling, S., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2021). Quantifying Quantum Coherence in Polariton Condensates. <i>PRX Quantum</i>. <a href=\"https://doi.org/10.1103/prxquantum.2.030320\">https://doi.org/10.1103/prxquantum.2.030320</a>","bibtex":"@article{Lüders_Pukrop_Rozas_Schneider_Höfling_Sperling_Schumacher_Aßmann_2021, title={Quantifying Quantum Coherence in Polariton Condensates}, DOI={<a href=\"https://doi.org/10.1103/prxquantum.2.030320\">10.1103/prxquantum.2.030320</a>}, journal={PRX Quantum}, author={Lüders, Carolin and Pukrop, Matthias and Rozas, Elena and Schneider, Christian and Höfling, Sven and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2021} }","short":"C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, PRX Quantum (2021).","mla":"Lüders, Carolin, et al. “Quantifying Quantum Coherence in Polariton Condensates.” <i>PRX Quantum</i>, 2021, doi:<a href=\"https://doi.org/10.1103/prxquantum.2.030320\">10.1103/prxquantum.2.030320</a>."},"year":"2021","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"35"}],"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"53","name":"TRR 142: TRR 142"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A4: TRR 142 - Subproject A4","_id":"61"}],"_id":"26283","language":[{"iso":"eng"}],"type":"journal_article","publication":"PRX Quantum","status":"public"},{"year":"2021","citation":{"ieee":"D. Bagrets <i>et al.</i>, “Probing the topological Anderson transition with quantum walks,” <i>Physical Review Research</i>, 2021, doi: <a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">10.1103/physrevresearch.3.023183</a>.","chicago":"Bagrets, Dmitry, Kun Woo Kim, Sonja Barkhofen, Syamsundar De, Jan Sperling, Christine Silberhorn, Alexander Altland, and Tobias Micklitz. “Probing the Topological Anderson Transition with Quantum Walks.” <i>Physical Review Research</i>, 2021. <a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">https://doi.org/10.1103/physrevresearch.3.023183</a>.","ama":"Bagrets D, Kim KW, Barkhofen S, et al. Probing the topological Anderson transition with quantum walks. <i>Physical Review Research</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">10.1103/physrevresearch.3.023183</a>","apa":"Bagrets, D., Kim, K. W., Barkhofen, S., De, S., Sperling, J., Silberhorn, C., Altland, A., &#38; Micklitz, T. (2021). Probing the topological Anderson transition with quantum walks. <i>Physical Review Research</i>. <a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">https://doi.org/10.1103/physrevresearch.3.023183</a>","mla":"Bagrets, Dmitry, et al. “Probing the Topological Anderson Transition with Quantum Walks.” <i>Physical Review Research</i>, 2021, doi:<a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">10.1103/physrevresearch.3.023183</a>.","short":"D. Bagrets, K.W. Kim, S. Barkhofen, S. De, J. Sperling, C. Silberhorn, A. Altland, T. Micklitz, Physical Review Research (2021).","bibtex":"@article{Bagrets_Kim_Barkhofen_De_Sperling_Silberhorn_Altland_Micklitz_2021, title={Probing the topological Anderson transition with quantum walks}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.3.023183\">10.1103/physrevresearch.3.023183</a>}, journal={Physical Review Research}, author={Bagrets, Dmitry and Kim, Kun Woo and Barkhofen, Sonja and De, Syamsundar and Sperling, Jan and Silberhorn, Christine and Altland, Alexander and Micklitz, Tobias}, year={2021} }"},"publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"title":"Probing the topological Anderson transition with quantum walks","doi":"10.1103/physrevresearch.3.023183","date_updated":"2023-04-20T15:07:12Z","author":[{"first_name":"Dmitry","full_name":"Bagrets, Dmitry","last_name":"Bagrets"},{"first_name":"Kun Woo","last_name":"Kim","full_name":"Kim, Kun Woo"},{"id":"48188","full_name":"Barkhofen, Sonja","last_name":"Barkhofen","first_name":"Sonja"},{"first_name":"Syamsundar","last_name":"De","full_name":"De, Syamsundar"},{"full_name":"Sperling, Jan","id":"75127","orcid":"0000-0002-5844-3205","last_name":"Sperling","first_name":"Jan"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Alexander","full_name":"Altland, Alexander","last_name":"Altland"},{"first_name":"Tobias","last_name":"Micklitz","full_name":"Micklitz, Tobias"}],"date_created":"2021-10-15T16:03:53Z","status":"public","type":"journal_article","publication":"Physical Review Research","language":[{"iso":"eng"}],"_id":"26284","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"623"},{"_id":"35"}]}]