[{"external_id":{"arxiv":["2412.08735"]},"language":[{"iso":"eng"}],"publication":"Physical Review A","publisher":"American Physical Society (APS)","date_created":"2026-01-18T18:08:18Z","title":"Restricted Monte Carlo wave-function method and Lindblad equation for identifying entangling open-quantum-system dynamics","issue":"1","year":"2026","project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"}],"_id":"63656","user_id":"99427","department":[{"_id":"799"}],"article_number":"012220","article_type":"original","type":"journal_article","status":"public","date_updated":"2026-01-18T18:15:01Z","author":[{"first_name":"Laura","full_name":"Ares, Laura","last_name":"Ares"},{"first_name":"Julien","last_name":"Pinske","full_name":"Pinske, Julien"},{"last_name":"Hinrichs","orcid":"0000-0001-9074-1205","id":"99427","full_name":"Hinrichs, Benjamin","first_name":"Benjamin"},{"last_name":"Kolb","id":"48880","full_name":"Kolb, Martin","first_name":"Martin"},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"}],"volume":113,"doi":"10.1103/hcj7-8zlg","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"citation":{"chicago":"Ares, Laura, Julien Pinske, Benjamin Hinrichs, Martin Kolb, and Jan Sperling. “Restricted Monte Carlo Wave-Function Method and Lindblad Equation for Identifying Entangling Open-Quantum-System Dynamics.” <i>Physical Review A</i> 113, no. 1 (2026). <a href=\"https://doi.org/10.1103/hcj7-8zlg\">https://doi.org/10.1103/hcj7-8zlg</a>.","ieee":"L. Ares, J. Pinske, B. Hinrichs, M. Kolb, and J. Sperling, “Restricted Monte Carlo wave-function method and Lindblad equation for identifying entangling open-quantum-system dynamics,” <i>Physical Review A</i>, vol. 113, no. 1, Art. no. 012220, 2026, doi: <a href=\"https://doi.org/10.1103/hcj7-8zlg\">10.1103/hcj7-8zlg</a>.","ama":"Ares L, Pinske J, Hinrichs B, Kolb M, Sperling J. Restricted Monte Carlo wave-function method and Lindblad equation for identifying entangling open-quantum-system dynamics. <i>Physical Review A</i>. 2026;113(1). doi:<a href=\"https://doi.org/10.1103/hcj7-8zlg\">10.1103/hcj7-8zlg</a>","apa":"Ares, L., Pinske, J., Hinrichs, B., Kolb, M., &#38; Sperling, J. (2026). Restricted Monte Carlo wave-function method and Lindblad equation for identifying entangling open-quantum-system dynamics. <i>Physical Review A</i>, <i>113</i>(1), Article 012220. <a href=\"https://doi.org/10.1103/hcj7-8zlg\">https://doi.org/10.1103/hcj7-8zlg</a>","bibtex":"@article{Ares_Pinske_Hinrichs_Kolb_Sperling_2026, title={Restricted Monte Carlo wave-function method and Lindblad equation for identifying entangling open-quantum-system dynamics}, volume={113}, DOI={<a href=\"https://doi.org/10.1103/hcj7-8zlg\">10.1103/hcj7-8zlg</a>}, number={1012220}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Ares, Laura and Pinske, Julien and Hinrichs, Benjamin and Kolb, Martin and Sperling, Jan}, year={2026} }","short":"L. Ares, J. Pinske, B. Hinrichs, M. Kolb, J. Sperling, Physical Review A 113 (2026).","mla":"Ares, Laura, et al. “Restricted Monte Carlo Wave-Function Method and Lindblad Equation for Identifying Entangling Open-Quantum-System Dynamics.” <i>Physical Review A</i>, vol. 113, no. 1, 012220, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/hcj7-8zlg\">10.1103/hcj7-8zlg</a>."},"intvolume":"       113"},{"year":"2026","issue":"1","title":"Separability Lindblad equation for dynamical open-system entanglement","date_created":"2026-01-18T18:11:27Z","publisher":"American Physical Society (APS)","publication":"Physical Review A","language":[{"iso":"eng"}],"external_id":{"arxiv":["2412.08724"]},"citation":{"apa":"Pinske, J., Ares, L., Hinrichs, B., Kolb, M., &#38; Sperling, J. (2026). Separability Lindblad equation for dynamical open-system entanglement. <i>Physical Review A</i>, <i>113</i>(1), Article L010403. <a href=\"https://doi.org/10.1103/kd3b-bfxq\">https://doi.org/10.1103/kd3b-bfxq</a>","short":"J. Pinske, L. Ares, B. Hinrichs, M. Kolb, J. Sperling, Physical Review A 113 (2026).","mla":"Pinske, Julien, et al. “Separability Lindblad Equation for Dynamical Open-System Entanglement.” <i>Physical Review A</i>, vol. 113, no. 1, L010403, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/kd3b-bfxq\">10.1103/kd3b-bfxq</a>.","bibtex":"@article{Pinske_Ares_Hinrichs_Kolb_Sperling_2026, title={Separability Lindblad equation for dynamical open-system entanglement}, volume={113}, DOI={<a href=\"https://doi.org/10.1103/kd3b-bfxq\">10.1103/kd3b-bfxq</a>}, number={1L010403}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Pinske, Julien and Ares, Laura and Hinrichs, Benjamin and Kolb, Martin and Sperling, Jan}, year={2026} }","ama":"Pinske J, Ares L, Hinrichs B, Kolb M, Sperling J. Separability Lindblad equation for dynamical open-system entanglement. <i>Physical Review A</i>. 2026;113(1). doi:<a href=\"https://doi.org/10.1103/kd3b-bfxq\">10.1103/kd3b-bfxq</a>","ieee":"J. Pinske, L. Ares, B. Hinrichs, M. Kolb, and J. Sperling, “Separability Lindblad equation for dynamical open-system entanglement,” <i>Physical Review A</i>, vol. 113, no. 1, Art. no. L010403, 2026, doi: <a href=\"https://doi.org/10.1103/kd3b-bfxq\">10.1103/kd3b-bfxq</a>.","chicago":"Pinske, Julien, Laura Ares, Benjamin Hinrichs, Martin Kolb, and Jan Sperling. “Separability Lindblad Equation for Dynamical Open-System Entanglement.” <i>Physical Review A</i> 113, no. 1 (2026). <a href=\"https://doi.org/10.1103/kd3b-bfxq\">https://doi.org/10.1103/kd3b-bfxq</a>."},"intvolume":"       113","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"doi":"10.1103/kd3b-bfxq","author":[{"first_name":"Julien","full_name":"Pinske, Julien","last_name":"Pinske"},{"first_name":"Laura","full_name":"Ares, Laura","last_name":"Ares"},{"full_name":"Hinrichs, Benjamin","id":"99427","orcid":"0000-0001-9074-1205","last_name":"Hinrichs","first_name":"Benjamin"},{"id":"48880","full_name":"Kolb, Martin","last_name":"Kolb","first_name":"Martin"},{"first_name":"Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127"}],"volume":113,"date_updated":"2026-01-18T18:15:26Z","status":"public","type":"journal_article","article_type":"letter_note","article_number":"L010403","user_id":"99427","department":[{"_id":"799"}],"project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"}],"_id":"63657"},{"editor":[{"full_name":"Hiroshima, Fumio","last_name":"Hiroshima","first_name":"Fumio"}],"status":"public","type":"conference","_id":"47534","project":[{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"799"},{"_id":"623"}],"series_title":"RIMS Kôkyûroku","user_id":"99427","intvolume":"      2310","citation":{"ieee":"B. Hinrichs and O. Matte, “Feynman-Kac formula for fiber Hamiltonians in the relativistic Nelson  model in two spatial dimensions,” in <i>Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics,”</i> 2025, vol. 2310, no. 3.","chicago":"Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formula for Fiber Hamiltonians in the Relativistic Nelson  Model in Two Spatial Dimensions.” In <i>Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics,”</i> edited by Fumio Hiroshima, Vol. 2310. RIMS Kôkyûroku, 2025.","ama":"Hinrichs B, Matte O. Feynman-Kac formula for fiber Hamiltonians in the relativistic Nelson  model in two spatial dimensions. In: Hiroshima F, ed. <i>Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics.”</i> Vol 2310. RIMS Kôkyûroku. ; 2025.","short":"B. Hinrichs, O. Matte, in: F. Hiroshima (Ed.), Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics,” 2025.","mla":"Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formula for Fiber Hamiltonians in the Relativistic Nelson  Model in Two Spatial Dimensions.” <i>Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics,”</i> edited by Fumio Hiroshima, vol. 2310, no. 3, 2025.","bibtex":"@inproceedings{Hinrichs_Matte_2025, series={RIMS Kôkyûroku}, title={Feynman-Kac formula for fiber Hamiltonians in the relativistic Nelson  model in two spatial dimensions}, volume={2310}, number={3}, booktitle={Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics”}, author={Hinrichs, Benjamin and Matte, Oliver}, editor={Hiroshima, Fumio}, year={2025}, collection={RIMS Kôkyûroku} }","apa":"Hinrichs, B., &#38; Matte, O. (2025). Feynman-Kac formula for fiber Hamiltonians in the relativistic Nelson  model in two spatial dimensions. In F. Hiroshima (Ed.), <i>Proceedings of the 2023 RIMS Workshop “Mathematical Aspects of Quantum Fields and Related Topics”</i> (Vol. 2310, Issue 3)."},"main_file_link":[{"url":"https://www.kurims.kyoto-u.ac.jp/~kyodo/kokyuroku/contents/2310.html"}],"date_updated":"2026-01-16T08:55:19Z","volume":2310,"author":[{"id":"99427","full_name":"Hinrichs, Benjamin","orcid":"0000-0001-9074-1205","last_name":"Hinrichs","first_name":"Benjamin"},{"full_name":"Matte, Oliver","last_name":"Matte","first_name":"Oliver"}],"abstract":[{"text":"In this proceeding we consider a translation invariant Nelson type model in\r\ntwo spatial dimensions modeling a scalar relativistic particle in interaction\r\nwith a massive radiation field. As is well-known, the corresponding Hamiltonian\r\ncan be defined with the help of an energy renormalization. First, we review a\r\nFeynman-Kac formula for the semigroup generated by this Hamiltonian proven by\r\nthe authors in a recent preprint (where several matter particles and exterior\r\npotentials are treated as well). After that, we employ a few technical key\r\nrelations and estimates obtained in our preprint to present an otherwise\r\nself-contained derivation of new Feynman-Kac formulas for the fiber\r\nHamiltonians attached to fixed total momenta of the translation invariant\r\nsystem. We conclude by inferring an alternative derivation of the Feynman-Kac\r\nformula for the full translation invariant Hamiltonian.","lang":"eng"}],"publication":"Proceedings of the 2023 RIMS Workshop 'Mathematical Aspects of Quantum Fields and Related Topics'","language":[{"iso":"eng"}],"external_id":{"arxiv":["2309.09005"]},"year":"2025","issue":"3","title":"Feynman-Kac formula for fiber Hamiltonians in the relativistic Nelson  model in two spatial dimensions","date_created":"2023-10-02T06:21:37Z"},{"external_id":{"arxiv":["2501.19362"]},"_id":"63642","project":[{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"799"}],"user_id":"99427","language":[{"iso":"eng"}],"publication":"arXiv:2501.19362","type":"preprint","abstract":[{"lang":"eng","text":"We prove absence of ground states in the infrared-divergent spin boson model at large coupling. Our key argument reduces the proof to verifying long range order in the dual one-dimensional continuum Ising model, i.e., to showing that the respective two point function is lower bounded by a strictly positive constant. We can then use known results from percolation theory to establish long range order at large coupling. Combined with the known existence of ground states at small coupling, our result proves that the spin boson model undergoes a phase transition with respect to the coupling strength. We also present an expansion for the vacuum overlap of the spin boson ground state in terms of the Ising $n$-point functions, which implies that the phase transition is unique, i.e., that there is a critical coupling constant below which a ground state exists and above which none can exist."}],"status":"public","date_updated":"2026-01-16T08:57:21Z","date_created":"2026-01-16T08:56:45Z","author":[{"last_name":"Betz","full_name":"Betz, Volker","first_name":"Volker"},{"first_name":"Benjamin","id":"99427","full_name":"Hinrichs, Benjamin","orcid":"0000-0001-9074-1205","last_name":"Hinrichs"},{"last_name":"Kraft","full_name":"Kraft, Mino Nicola","first_name":"Mino Nicola"},{"first_name":"Steffen","last_name":"Polzer","full_name":"Polzer, Steffen"}],"title":"On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model","year":"2025","citation":{"ama":"Betz V, Hinrichs B, Kraft MN, Polzer S. On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model. <i>arXiv:250119362</i>. Published online 2025.","ieee":"V. Betz, B. Hinrichs, M. N. Kraft, and S. Polzer, “On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model,” <i>arXiv:2501.19362</i>. 2025.","chicago":"Betz, Volker, Benjamin Hinrichs, Mino Nicola Kraft, and Steffen Polzer. “On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model.” <i>ArXiv:2501.19362</i>, 2025.","short":"V. Betz, B. Hinrichs, M.N. Kraft, S. Polzer, ArXiv:2501.19362 (2025).","mla":"Betz, Volker, et al. “On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model.” <i>ArXiv:2501.19362</i>, 2025.","bibtex":"@article{Betz_Hinrichs_Kraft_Polzer_2025, title={On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model}, journal={arXiv:2501.19362}, author={Betz, Volker and Hinrichs, Benjamin and Kraft, Mino Nicola and Polzer, Steffen}, year={2025} }","apa":"Betz, V., Hinrichs, B., Kraft, M. N., &#38; Polzer, S. (2025). On the Ising Phase Transition in the Infrared-Divergent Spin Boson Model. In <i>arXiv:2501.19362</i>."}},{"department":[{"_id":"799"}],"user_id":"99427","external_id":{"arxiv":["2502.04876"]},"_id":"63644","project":[{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"language":[{"iso":"eng"}],"publication":"arXiv:2502.04876","type":"preprint","status":"public","abstract":[{"text":"We study the ultraviolet problem for models of a finite-dimensional quantum mechanical system linearly coupled to a bosonic quantum field, such as the (many-)spin boson model or its rotating-wave approximation. If the state change of the system upon emission or absorption of a boson is either given by a normal matrix or by a 2-nilpotent one, which is the case for the previously named examples, we prove an optimal renormalization result. We complement it, by proving the norm resolvent convergence of appropriately regularized models to the renormalized one. Our method consists of a dressing transformation argument in the normal case and an appropriate interior boundary condition for the 2-nilpotent case.","lang":"eng"}],"author":[{"id":"99427","full_name":"Hinrichs, Benjamin","last_name":"Hinrichs","orcid":"0000-0001-9074-1205","first_name":"Benjamin"},{"first_name":"Jonas","last_name":"Lampart","full_name":"Lampart, Jonas"},{"first_name":"Javier","last_name":"Valentín Martín","full_name":"Valentín Martín, Javier"}],"date_created":"2026-01-16T08:58:25Z","date_updated":"2026-01-16T08:59:03Z","title":"Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions","citation":{"mla":"Hinrichs, Benjamin, et al. “Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions.” <i>ArXiv:2502.04876</i>, 2025.","bibtex":"@article{Hinrichs_Lampart_Valentín Martín_2025, title={Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions}, journal={arXiv:2502.04876}, author={Hinrichs, Benjamin and Lampart, Jonas and Valentín Martín, Javier}, year={2025} }","short":"B. Hinrichs, J. Lampart, J. Valentín Martín, ArXiv:2502.04876 (2025).","apa":"Hinrichs, B., Lampart, J., &#38; Valentín Martín, J. (2025). Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions. In <i>arXiv:2502.04876</i>.","chicago":"Hinrichs, Benjamin, Jonas Lampart, and Javier Valentín Martín. “Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions.” <i>ArXiv:2502.04876</i>, 2025.","ieee":"B. Hinrichs, J. Lampart, and J. Valentín Martín, “Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions,” <i>arXiv:2502.04876</i>. 2025.","ama":"Hinrichs B, Lampart J, Valentín Martín J. Ultraviolet Renormalization of Spin Boson Models I. Normal and 2-Nilpotent Interactions. <i>arXiv:250204876</i>. Published online 2025."},"year":"2025"},{"year":"2025","citation":{"mla":"Falconi, Marco, et al. “Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors.” <i>ArXiv:2508.00805</i>, 2025.","short":"M. Falconi, B. Hinrichs, J. Valentín Martín, ArXiv:2508.00805 (2025).","bibtex":"@article{Falconi_Hinrichs_Valentín Martín_2025, title={Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors}, journal={arXiv:2508.00805}, author={Falconi, Marco and Hinrichs, Benjamin and Valentín Martín, Javier}, year={2025} }","apa":"Falconi, M., Hinrichs, B., &#38; Valentín Martín, J. (2025). Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors. In <i>arXiv:2508.00805</i>.","ama":"Falconi M, Hinrichs B, Valentín Martín J. Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors. <i>arXiv:250800805</i>. Published online 2025.","ieee":"M. Falconi, B. Hinrichs, and J. Valentín Martín, “Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors,” <i>arXiv:2508.00805</i>. 2025.","chicago":"Falconi, Marco, Benjamin Hinrichs, and Javier Valentín Martín. “Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors.” <i>ArXiv:2508.00805</i>, 2025."},"title":"Non-Trivial Renormalization of Spin-Boson Models with Supercritical Form Factors","date_updated":"2026-01-16T09:01:45Z","author":[{"first_name":"Marco","full_name":"Falconi, Marco","last_name":"Falconi"},{"full_name":"Hinrichs, Benjamin","id":"99427","orcid":"0000-0001-9074-1205","last_name":"Hinrichs","first_name":"Benjamin"},{"full_name":"Valentín Martín, Javier","last_name":"Valentín Martín","first_name":"Javier"}],"date_created":"2026-01-16T08:59:11Z","abstract":[{"lang":"eng","text":"In this paper we construct the non-trivial, renormalized Hamiltonian for a class of spin-boson models with supercritical form factors, including the one describing the Weisskopf-Wigner spontaneous emission. The renormalization is performed through both a self-energy and mass renormalization, in the so-called Hamiltonian formalism of constructive quantum field theory, implemented by a non-unitary dressing transformation. This solves the problem of triviality for unitarily-renormalized supercritical spin-boson models."}],"status":"public","publication":"arXiv:2508.00805","type":"preprint","language":[{"iso":"eng"}],"_id":"63645","external_id":{"arxiv":["2508.00805"]},"project":[{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"799"}],"user_id":"99427"},{"title":"Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems","date_updated":"2026-01-16T09:01:02Z","author":[{"first_name":"Benjamin","full_name":"Hinrichs, Benjamin","id":"99427","orcid":"0000-0001-9074-1205","last_name":"Hinrichs"},{"first_name":"Steffen","full_name":"Polzer, Steffen","last_name":"Polzer"}],"date_created":"2026-01-16T08:59:45Z","year":"2025","citation":{"ieee":"B. Hinrichs and S. Polzer, “Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems,” <i>arXiv:2511.02867</i>. 2025.","chicago":"Hinrichs, Benjamin, and Steffen Polzer. “Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems.” <i>ArXiv:2511.02867</i>, 2025.","ama":"Hinrichs B, Polzer S. Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems. <i>arXiv:251102867</i>. Published online 2025.","apa":"Hinrichs, B., &#38; Polzer, S. (2025). Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems. In <i>arXiv:2511.02867</i>.","mla":"Hinrichs, Benjamin, and Steffen Polzer. “Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems.” <i>ArXiv:2511.02867</i>, 2025.","short":"B. Hinrichs, S. Polzer, ArXiv:2511.02867 (2025).","bibtex":"@article{Hinrichs_Polzer_2025, title={Wiener-Type Theorems for the Laplace Transform. With Applications to Ground State Problems}, journal={arXiv:2511.02867}, author={Hinrichs, Benjamin and Polzer, Steffen}, year={2025} }"},"language":[{"iso":"eng"}],"project":[{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"external_id":{"arxiv":["2511.02867"]},"_id":"63646","user_id":"99427","department":[{"_id":"799"}],"abstract":[{"text":"We study the behavior of a probability measure near the bottom of its support in terms of time averaged quotients of its Laplace transform. We discuss how our results are connected to both rank-one perturbation theory as well as renewal theory. We further apply our results in order to derive criteria for the existence and non-existence of ground states for a finite dimensional quantum system coupled to a bosonic field.","lang":"eng"}],"status":"public","type":"preprint","publication":"arXiv:2511.02867"},{"project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"external_id":{"arxiv":["2511.13409"]},"_id":"63647","user_id":"99427","department":[{"_id":"799"}],"language":[{"iso":"eng"}],"type":"preprint","publication":"arXiv:2511.13409","abstract":[{"lang":"eng","text":"We study the convergence rate of translation-invariant discrete-time quantum dynamics on a one-dimensional lattice. We prove that the cumulative distributions function of the ballistically scaled position $\\mathbb X(n)/{n}$ after $n$ steps converges at a rate of $n^{-1/3}$ in the Lévy metric as $n\\to\\infty$. In the special case of step-coin quantum walks with two-dimensional coin space, we recover the same convergence rate for the supremum distance and prove optimality."}],"status":"public","date_updated":"2026-01-16T09:00:31Z","author":[{"id":"99427","full_name":"Hinrichs, Benjamin","last_name":"Hinrichs","orcid":"0000-0001-9074-1205","first_name":"Benjamin"},{"first_name":"Pascal","full_name":"Mittenbühler, Pascal","last_name":"Mittenbühler"}],"date_created":"2026-01-16T08:59:54Z","title":"On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks","year":"2025","citation":{"ama":"Hinrichs B, Mittenbühler P. On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks. <i>arXiv:251113409</i>. Published online 2025.","chicago":"Hinrichs, Benjamin, and Pascal Mittenbühler. “On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks.” <i>ArXiv:2511.13409</i>, 2025.","ieee":"B. Hinrichs and P. Mittenbühler, “On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks,” <i>arXiv:2511.13409</i>. 2025.","apa":"Hinrichs, B., &#38; Mittenbühler, P. (2025). On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks. In <i>arXiv:2511.13409</i>.","bibtex":"@article{Hinrichs_Mittenbühler_2025, title={On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks}, journal={arXiv:2511.13409}, author={Hinrichs, Benjamin and Mittenbühler, Pascal}, year={2025} }","mla":"Hinrichs, Benjamin, and Pascal Mittenbühler. “On the Optimal Rate of Convergence for Translation-Invariant 1D Quantum Walks.” <i>ArXiv:2511.13409</i>, 2025.","short":"B. Hinrichs, P. Mittenbühler, ArXiv:2511.13409 (2025)."}},{"issue":"3","year":"2025","date_created":"2025-09-12T10:37:34Z","publisher":"American Physical Society (APS)","title":"Entanglement between dependent degrees of freedom: Quasiparticle correlations","publication":"Physical Review A","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","intvolume":"       111","citation":{"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>","short":"F. Barkhausen, L. Ares Santos, S. Schumacher, J. Sperling, Physical Review A 111 (2025).","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} }","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>.","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>","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>.","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>."},"volume":111,"author":[{"first_name":"Franziska","id":"63631","full_name":"Barkhausen, Franziska","last_name":"Barkhausen"},{"last_name":"Ares Santos","full_name":"Ares Santos, Laura","first_name":"Laura"},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"},{"id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"}],"date_updated":"2025-09-12T10:42:16Z","doi":"10.1103/physreva.111.032404","type":"journal_article","status":"public","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"623"},{"_id":"429"}],"user_id":"16199","_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"},{"name":"TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten","_id":"61"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"article_number":"032404"},{"publication_identifier":{"issn":["2521-327X"]},"publication_status":"published","year":"2025","intvolume":"         9","citation":{"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>","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>","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>.","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>."},"date_updated":"2025-09-18T13:22:26Z","publisher":"Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften","volume":9,"author":[{"first_name":"Denis A.","last_name":"Kopylov","full_name":"Kopylov, Denis A."},{"full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"id":"60286","full_name":"Sharapova, Polina R.","last_name":"Sharapova","first_name":"Polina R."}],"date_created":"2025-02-05T12:57:37Z","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":[{"_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"},{"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"}]},{"volume":7,"author":[{"full_name":"Kopylov, Denis A.","last_name":"Kopylov","first_name":"Denis A."},{"last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777","first_name":"Michael"},{"last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Sharapova, Polina R.","id":"60286","last_name":"Sharapova","first_name":"Polina R."}],"date_created":"2025-12-05T09:33:36Z","publisher":"American Physical Society (APS)","date_updated":"2025-12-05T09:55:22Z","doi":"10.1103/zp72-7qwl","title":"Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation","issue":"3","publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","intvolume":"         7","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>.","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>","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>.","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)."},"year":"2025","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"288"},{"_id":"230"},{"_id":"623"},{"_id":"429"},{"_id":"35"}],"user_id":"16199","_id":"62911","project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_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"}],"language":[{"iso":"eng"}],"article_number":"033122","publication":"Physical Review Research","type":"journal_article","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"}]},{"publication":"2024 IEEE 63rd Conference on Decision and Control (CDC)","type":"conference","status":"public","_id":"62913","project":[{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"user_id":"16199","language":[{"iso":"eng"}],"publication_status":"published","year":"2025","citation":{"apa":"Hunstig, A., Peitz, S., Rose, H., &#38; Meier, T. (2025). Accelerating the analysis of optical quantum systems using the Koopman operator. <i>2024 IEEE 63rd Conference on Decision and Control (CDC)</i>. <a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">https://doi.org/10.1109/cdc56724.2024.10886589</a>","mla":"Hunstig, Anna, et al. “Accelerating the Analysis of Optical Quantum Systems Using the Koopman Operator.” <i>2024 IEEE 63rd Conference on Decision and Control (CDC)</i>, IEEE, 2025, doi:<a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">10.1109/cdc56724.2024.10886589</a>.","short":"A. Hunstig, S. Peitz, H. Rose, T. Meier, in: 2024 IEEE 63rd Conference on Decision and Control (CDC), IEEE, 2025.","bibtex":"@inproceedings{Hunstig_Peitz_Rose_Meier_2025, title={Accelerating the analysis of optical quantum systems using the Koopman operator}, DOI={<a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">10.1109/cdc56724.2024.10886589</a>}, booktitle={2024 IEEE 63rd Conference on Decision and Control (CDC)}, publisher={IEEE}, author={Hunstig, Anna and Peitz, Sebastian and Rose, Hendrik and Meier, Torsten}, year={2025} }","ama":"Hunstig A, Peitz S, Rose H, Meier T. Accelerating the analysis of optical quantum systems using the Koopman operator. In: <i>2024 IEEE 63rd Conference on Decision and Control (CDC)</i>. IEEE; 2025. doi:<a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">10.1109/cdc56724.2024.10886589</a>","ieee":"A. Hunstig, S. Peitz, H. Rose, and T. Meier, “Accelerating the analysis of optical quantum systems using the Koopman operator,” 2025, doi: <a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">10.1109/cdc56724.2024.10886589</a>.","chicago":"Hunstig, Anna, Sebastian Peitz, Hendrik Rose, and Torsten Meier. “Accelerating the Analysis of Optical Quantum Systems Using the Koopman Operator.” In <i>2024 IEEE 63rd Conference on Decision and Control (CDC)</i>. IEEE, 2025. <a href=\"https://doi.org/10.1109/cdc56724.2024.10886589\">https://doi.org/10.1109/cdc56724.2024.10886589</a>."},"date_updated":"2025-12-05T09:40:24Z","publisher":"IEEE","date_created":"2025-12-05T09:37:58Z","author":[{"first_name":"Anna","last_name":"Hunstig","full_name":"Hunstig, Anna","id":"73659"},{"first_name":"Sebastian","full_name":"Peitz, Sebastian","id":"47427","orcid":"0000-0002-3389-793X","last_name":"Peitz"},{"last_name":"Rose","orcid":"0000-0002-3079-5428","full_name":"Rose, Hendrik","id":"55958","first_name":"Hendrik"},{"full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten"}],"title":"Accelerating the analysis of optical quantum systems using the Koopman operator","doi":"10.1109/cdc56724.2024.10886589"},{"user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"706"},{"_id":"636"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"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"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"_id":"62980","language":[{"iso":"eng"}],"article_number":"033062","type":"journal_article","publication":"Physical Review Research","status":"public","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"}],"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"},{"first_name":"Laura","full_name":"Ares, Laura","last_name":"Ares"},{"first_name":"Boris Edgar","last_name":"Wembe Moafo","full_name":"Wembe Moafo, Boris Edgar","id":"95394"},{"first_name":"Sina","full_name":"Ober-Blöbaum, Sina","id":"16494","last_name":"Ober-Blöbaum"},{"first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344","full_name":"Meier, Torsten"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."},{"first_name":"Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling","full_name":"Sperling, Jan","id":"75127"}],"date_created":"2025-12-09T09:08:39Z","volume":7,"publisher":"American Physical Society (APS)","date_updated":"2025-12-09T09:10:01Z","doi":"10.1103/sv6z-v1gk","title":"Multiphoton, multimode state classification for nonlinear optical circuits","issue":"3","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"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>","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>.","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>.","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>","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>."},"intvolume":"         7","year":"2025"},{"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"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"_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."}],"author":[{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"},{"first_name":"Polina R.","last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina R."},{"first_name":"Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127"},{"first_name":"Sina","id":"16494","full_name":"Ober-Blöbaum, Sina","last_name":"Ober-Blöbaum"},{"first_name":"Boris Edgar","id":"95394","full_name":"Wembe Moafo, Boris Edgar","last_name":"Wembe Moafo"},{"first_name":"Christian","full_name":"Offen, Christian","id":"85279","last_name":"Offen","orcid":"0000-0002-5940-8057"}],"date_created":"2025-12-09T08:59:27Z","date_updated":"2025-12-09T09:10:23Z","title":"Multiphoton, multimode state classification for nonlinear optical circuits","citation":{"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.","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} }"},"year":"2025"},{"title":"Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons","date_created":"2025-12-16T15:50:42Z","publisher":"American Physical Society (APS)","year":"2025","issue":"24","language":[{"iso":"eng"}],"publication":"Physical Review B","doi":"10.1103/528f-7smh","author":[{"full_name":"Rose, Hendrik","id":"55958","last_name":"Rose","orcid":"0000-0002-3079-5428","first_name":"Hendrik"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271"},{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier"}],"volume":112,"date_updated":"2025-12-16T15:52:55Z","citation":{"apa":"Rose, H., Schumacher, S., &#38; Meier, T. (2025). Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons. <i>Physical Review B</i>, <i>112</i>(24), Article 245304. <a href=\"https://doi.org/10.1103/528f-7smh\">https://doi.org/10.1103/528f-7smh</a>","bibtex":"@article{Rose_Schumacher_Meier_2025, title={Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons}, volume={112}, DOI={<a href=\"https://doi.org/10.1103/528f-7smh\">10.1103/528f-7smh</a>}, number={24245304}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Rose, Hendrik and Schumacher, Stefan and Meier, Torsten}, year={2025} }","short":"H. Rose, S. Schumacher, T. Meier, Physical Review B 112 (2025).","mla":"Rose, Hendrik, et al. “Microscopic Approach to the Quantized Light-Matter Interaction in Semiconductor Nanostructures: Complex Coupled Dynamics of Excitons, Biexcitons, and Photons.” <i>Physical Review B</i>, vol. 112, no. 24, 245304, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/528f-7smh\">10.1103/528f-7smh</a>.","ama":"Rose H, Schumacher S, Meier T. Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons. <i>Physical Review B</i>. 2025;112(24). doi:<a href=\"https://doi.org/10.1103/528f-7smh\">10.1103/528f-7smh</a>","ieee":"H. Rose, S. Schumacher, and T. Meier, “Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons,” <i>Physical Review B</i>, vol. 112, no. 24, Art. no. 245304, 2025, doi: <a href=\"https://doi.org/10.1103/528f-7smh\">10.1103/528f-7smh</a>.","chicago":"Rose, Hendrik, Stefan Schumacher, and Torsten Meier. “Microscopic Approach to the Quantized Light-Matter Interaction in Semiconductor Nanostructures: Complex Coupled Dynamics of Excitons, Biexcitons, and Photons.” <i>Physical Review B</i> 112, no. 24 (2025). <a href=\"https://doi.org/10.1103/528f-7smh\">https://doi.org/10.1103/528f-7smh</a>."},"intvolume":"       112","publication_status":"published","publication_identifier":{"issn":["2469-9950","2469-9969"]},"article_number":"245304","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"297"},{"_id":"623"},{"_id":"429"},{"_id":"230"},{"_id":"35"},{"_id":"27"}],"project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"59","name":"TRR 142; TP A02: Nichtlineare Spektroskopie von Halbleiter-Nanostrukturen mit Quantenlicht"},{"name":"Hochleistungsrechner Noctua in Paderborn","_id":"445"},{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"_id":"63160","status":"public","type":"journal_article"},{"article_number":"046116","language":[{"iso":"eng"}],"project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"_id":"63562","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"429"},{"_id":"230"},{"_id":"623"},{"_id":"35"}],"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","type":"journal_article","publication":"APL Quantum","title":"Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides","doi":"10.1063/5.0293116","date_updated":"2026-01-12T13:23:36Z","publisher":"AIP Publishing","author":[{"last_name":"Kopylov","id":"98502","full_name":"Kopylov, Denis","first_name":"Denis"},{"last_name":"Meier","orcid":"0000-0001-8864-2072","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"},{"full_name":"Sharapova, Polina R.","id":"60286","last_name":"Sharapova","first_name":"Polina R."}],"date_created":"2026-01-12T13:18:51Z","volume":2,"year":"2025","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>.","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} }","short":"D. Kopylov, T. Meier, P.R. Sharapova, APL Quantum 2 (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>"},"intvolume":"         2","publication_status":"published","publication_identifier":{"issn":["2835-0103"]},"issue":"4"},{"_id":"51339","project":[{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"216","keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"publication":"Optics Express","type":"journal_article","status":"public","date_updated":"2024-02-13T13:09:51Z","publisher":"Optica Publishing Group","date_created":"2024-02-13T13:03:01Z","author":[{"first_name":"Jonas","full_name":"Babai-Hemati, Jonas","last_name":"Babai-Hemati"},{"last_name":"vom Bruch","full_name":"vom Bruch, Felix","id":"71245","first_name":"Felix"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"title":"Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters","doi":"10.1364/oe.510319","publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","year":"2024","citation":{"chicago":"Babai-Hemati, Jonas, Felix vom Bruch, Harald Herrmann, and Christine Silberhorn. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” <i>Optics Express</i>, 2024. <a href=\"https://doi.org/10.1364/oe.510319\">https://doi.org/10.1364/oe.510319</a>.","ieee":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, and C. Silberhorn, “Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters,” <i>Optics Express</i>, 2024, doi: <a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>.","ama":"Babai-Hemati J, vom Bruch F, Herrmann H, Silberhorn C. Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. <i>Optics Express</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>","bibtex":"@article{Babai-Hemati_vom Bruch_Herrmann_Silberhorn_2024, title={Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters}, DOI={<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babai-Hemati, Jonas and vom Bruch, Felix and Herrmann, Harald and Silberhorn, Christine}, year={2024} }","mla":"Babai-Hemati, Jonas, et al. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” <i>Optics Express</i>, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>.","short":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, C. Silberhorn, Optics Express (2024).","apa":"Babai-Hemati, J., vom Bruch, F., Herrmann, H., &#38; Silberhorn, C. (2024). Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. <i>Optics Express</i>. <a href=\"https://doi.org/10.1364/oe.510319\">https://doi.org/10.1364/oe.510319</a>"}},{"publication":"Physical Review A","type":"journal_article","status":"public","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"429"}],"user_id":"75127","_id":"55173","project":[{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"}],"language":[{"iso":"eng"}],"article_number":"013705","issue":"1","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","intvolume":"       110","citation":{"ieee":"C. Di Fidio, L. Ares, and J. Sperling, “Quantum walks and entanglement in cavity networks,” <i>Physical Review A</i>, vol. 110, no. 1, Art. no. 013705, 2024, doi: <a href=\"https://doi.org/10.1103/physreva.110.013705\">10.1103/physreva.110.013705</a>.","chicago":"Di Fidio, Christian, Laura Ares, and Jan Sperling. “Quantum Walks and Entanglement in Cavity Networks.” <i>Physical Review A</i> 110, no. 1 (2024). <a href=\"https://doi.org/10.1103/physreva.110.013705\">https://doi.org/10.1103/physreva.110.013705</a>.","ama":"Di Fidio C, Ares L, Sperling J. Quantum walks and entanglement in cavity networks. <i>Physical Review A</i>. 2024;110(1). doi:<a href=\"https://doi.org/10.1103/physreva.110.013705\">10.1103/physreva.110.013705</a>","apa":"Di Fidio, C., Ares, L., &#38; Sperling, J. (2024). Quantum walks and entanglement in cavity networks. <i>Physical Review A</i>, <i>110</i>(1), Article 013705. <a href=\"https://doi.org/10.1103/physreva.110.013705\">https://doi.org/10.1103/physreva.110.013705</a>","mla":"Di Fidio, Christian, et al. “Quantum Walks and Entanglement in Cavity Networks.” <i>Physical Review A</i>, vol. 110, no. 1, 013705, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physreva.110.013705\">10.1103/physreva.110.013705</a>.","bibtex":"@article{Di Fidio_Ares_Sperling_2024, title={Quantum walks and entanglement in cavity networks}, volume={110}, DOI={<a href=\"https://doi.org/10.1103/physreva.110.013705\">10.1103/physreva.110.013705</a>}, number={1013705}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Di Fidio, Christian and Ares, Laura and Sperling, Jan}, year={2024} }","short":"C. Di Fidio, L. Ares, J. Sperling, Physical Review A 110 (2024)."},"year":"2024","volume":110,"author":[{"full_name":"Di Fidio, Christian","last_name":"Di Fidio","first_name":"Christian"},{"full_name":"Ares, Laura","last_name":"Ares","first_name":"Laura"},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"}],"date_created":"2024-07-11T07:20:08Z","date_updated":"2024-07-11T07:21:12Z","publisher":"American Physical Society (APS)","doi":"10.1103/physreva.110.013705","title":"Quantum walks and entanglement in cavity networks"},{"abstract":[{"text":"Samples of dielectric optical waveguides of rib or strip type in thin-film lithium niobate (TFLN) technology are characterized with respect to their optical loss using the Fabry-Pérot method. Attributing the losses mainly to sidewall roughness, we employ a simple perturbational procedure, based on rigorously computed mode profiles of idealized channels, to estimate the attenuation for waveguides with different cross sections. A single fit parameter suffices for an adequate modelling of the effect of the waveguide geometry on the loss levels.","lang":"eng"}],"file":[{"content_type":"application/pdf","relation":"main_file","date_updated":"2024-06-10T11:25:00Z","date_created":"2024-06-10T11:25:00Z","creator":"fossie","file_size":4004782,"access_level":"open_access","file_id":"54669","file_name":"2024-06 Hammer - Optics Express - Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides.pdf"}],"publication":"Optics Express","keyword":["tet_topic_waveguide"],"ddc":["530"],"language":[{"iso":"eng"}],"year":"2024","issue":"13","title":"Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides","publisher":"Optica Publishing Group","date_created":"2024-06-10T11:18:06Z","status":"public","type":"journal_article","file_date_updated":"2024-06-10T11:25:00Z","_id":"54668","project":[{"grant_number":"231447078","_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"grant_number":"231447078","name":"TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI (C11*)","_id":"175"},{"_id":"167","name":"TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)","grant_number":"231447078"},{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"61"},{"_id":"429"},{"_id":"623"},{"_id":"263"},{"_id":"288"}],"user_id":"158","page":"22878","intvolume":"        32","citation":{"short":"M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878.","mla":"Hammer, Manfred, et al. “Estimation of Losses Caused by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.” <i>Optics Express</i>, vol. 32, no. 13, Optica Publishing Group, 2024, p. 22878, doi:<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>.","bibtex":"@article{Hammer_Babel_Farheen_Padberg_Scheytt_Silberhorn_Förstner_2024, title={Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides}, volume={32}, DOI={<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>}, number={13}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Hammer, Manfred and Babel, Silia and Farheen, Henna and Padberg, Laura and Scheytt, J. Christoph and Silberhorn, Christine and Förstner, Jens}, year={2024}, pages={22878} }","apa":"Hammer, M., Babel, S., Farheen, H., Padberg, L., Scheytt, J. C., Silberhorn, C., &#38; Förstner, J. (2024). Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides. <i>Optics Express</i>, <i>32</i>(13), 22878. <a href=\"https://doi.org/10.1364/oe.521766\">https://doi.org/10.1364/oe.521766</a>","ama":"Hammer M, Babel S, Farheen H, et al. Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides. <i>Optics Express</i>. 2024;32(13):22878. doi:<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>","ieee":"M. Hammer <i>et al.</i>, “Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides,” <i>Optics Express</i>, vol. 32, no. 13, p. 22878, 2024, doi: <a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>.","chicago":"Hammer, Manfred, Silia Babel, Henna Farheen, Laura Padberg, J. Christoph Scheytt, Christine Silberhorn, and Jens Förstner. “Estimation of Losses Caused by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.” <i>Optics Express</i> 32, no. 13 (2024): 22878. <a href=\"https://doi.org/10.1364/oe.521766\">https://doi.org/10.1364/oe.521766</a>."},"publication_identifier":{"issn":["1094-4087"]},"has_accepted_license":"1","publication_status":"published","doi":"10.1364/oe.521766","date_updated":"2024-07-22T07:43:02Z","oa":"1","volume":32,"author":[{"orcid":"0000-0002-6331-9348","last_name":"Hammer","id":"48077","full_name":"Hammer, Manfred","first_name":"Manfred"},{"last_name":"Babel","orcid":"https://orcid.org/0000-0002-1568-2580","id":"63231","full_name":"Babel, Silia","first_name":"Silia"},{"last_name":"Farheen","orcid":"0000-0001-7730-3489","id":"53444","full_name":"Farheen, Henna","first_name":"Henna"},{"first_name":"Laura","last_name":"Padberg","id":"40300","full_name":"Padberg, Laura"},{"first_name":"J. Christoph","id":"37144","full_name":"Scheytt, J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 "},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"}]},{"article_type":"original","file_date_updated":"2024-08-25T10:48:05Z","_id":"55751","project":[{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"},{"name":"TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)","_id":"167","grant_number":"231447078"}],"department":[{"_id":"61"},{"_id":"429"}],"user_id":"158","status":"public","type":"journal_article","doi":"10.1364/josab.528729","date_updated":"2024-08-25T10:48:42Z","oa":"1","volume":41,"author":[{"last_name":"Üstün","full_name":"Üstün, Necati","first_name":"Necati"},{"full_name":"Farheen, Henna","id":"53444","orcid":"0000-0001-7730-3489","last_name":"Farheen","first_name":"Henna"},{"id":"48077","full_name":"Hammer, Manfred","orcid":"0000-0002-6331-9348","last_name":"Hammer","first_name":"Manfred"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","id":"158"}],"intvolume":"        41","page":"2077","citation":{"apa":"Üstün, N., Farheen, H., Hammer, M., &#38; Förstner, J. (2024). Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching. <i>Journal of the Optical Society of America B</i>, <i>41</i>(9), 2077. <a href=\"https://doi.org/10.1364/josab.528729\">https://doi.org/10.1364/josab.528729</a>","bibtex":"@article{Üstün_Farheen_Hammer_Förstner_2024, title={Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching}, volume={41}, DOI={<a href=\"https://doi.org/10.1364/josab.528729\">10.1364/josab.528729</a>}, number={9}, journal={Journal of the Optical Society of America B}, publisher={Optica Publishing Group}, author={Üstün, Necati and Farheen, Henna and Hammer, Manfred and Förstner, Jens}, year={2024}, pages={2077} }","mla":"Üstün, Necati, et al. “Symmetry-Protected TM Modes in Rib-like, plus-Shaped Optical Waveguides with Shallow Etching.” <i>Journal of the Optical Society of America B</i>, vol. 41, no. 9, Optica Publishing Group, 2024, p. 2077, doi:<a href=\"https://doi.org/10.1364/josab.528729\">10.1364/josab.528729</a>.","short":"N. Üstün, H. Farheen, M. Hammer, J. Förstner, Journal of the Optical Society of America B 41 (2024) 2077.","ama":"Üstün N, Farheen H, Hammer M, Förstner J. Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching. <i>Journal of the Optical Society of America B</i>. 2024;41(9):2077. doi:<a href=\"https://doi.org/10.1364/josab.528729\">10.1364/josab.528729</a>","ieee":"N. Üstün, H. Farheen, M. Hammer, and J. Förstner, “Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching,” <i>Journal of the Optical Society of America B</i>, vol. 41, no. 9, p. 2077, 2024, doi: <a href=\"https://doi.org/10.1364/josab.528729\">10.1364/josab.528729</a>.","chicago":"Üstün, Necati, Henna Farheen, Manfred Hammer, and Jens Förstner. “Symmetry-Protected TM Modes in Rib-like, plus-Shaped Optical Waveguides with Shallow Etching.” <i>Journal of the Optical Society of America B</i> 41, no. 9 (2024): 2077. <a href=\"https://doi.org/10.1364/josab.528729\">https://doi.org/10.1364/josab.528729</a>."},"publication_identifier":{"issn":["0740-3224","1520-8540"]},"has_accepted_license":"1","publication_status":"published","keyword":["tet_topic_waveguide"],"ddc":["530"],"language":[{"iso":"eng"}],"abstract":[{"text":"Lateral leakage of TM modes in dielectric optical waveguides of rib/ridge or strip-loaded types can be fully suppressed, if the waveguide core is formed not through a strip that protrudes at one side (up) from the remaining lateral guiding slab, but through parallel strips on both sides (up and down), such that the resulting cross section becomes vertically symmetric. The fairly general arguments underlying the leakage suppression apply to TM modes of all orders simultaneously, and are independent of wavelength. These plus-shaped waveguides support strictly guided, non-leaky TM modes for, in principle, arbitrarily shallow etching.","lang":"eng"}],"file":[{"content_type":"application/pdf","relation":"main_file","creator":"fossie","date_created":"2024-08-25T10:30:28Z","date_updated":"2024-08-25T10:30:28Z","file_name":"2024-08 Farheen - JOSA B - Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching.pdf","access_level":"local","file_id":"55752","file_size":920206},{"access_level":"open_access","file_id":"55753","file_name":"2024-08 Farheen - JOSA B - Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching (preprint).pdf","file_size":931810,"title":"(preprint)","date_created":"2024-08-25T10:48:05Z","creator":"fossie","date_updated":"2024-08-25T10:48:05Z","relation":"main_file","content_type":"application/pdf"}],"publication":"Journal of the Optical Society of America B","title":"Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching","publisher":"Optica Publishing Group","date_created":"2024-08-25T10:24:58Z","year":"2024","issue":"9"}]