[{"_id":"51339","project":[{"_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing","grant_number":"PROFILNRW-2020-067"}],"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","publisher":"Optica Publishing Group","date_updated":"2024-02-13T13:09:51Z","author":[{"first_name":"Jonas","last_name":"Babai-Hemati","full_name":"Babai-Hemati, Jonas"},{"first_name":"Felix","last_name":"vom Bruch","full_name":"vom Bruch, Felix","id":"71245"},{"first_name":"Harald","id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2024-02-13T13:03:01Z","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":{"mla":"Babai-Hemati, Jonas, et al. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, Optica Publishing Group, 2024, doi:10.1364/oe.510319.","bibtex":"@article{Babai-Hemati_vom Bruch_Herrmann_Silberhorn_2024, title={Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters}, DOI={10.1364/oe.510319}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babai-Hemati, Jonas and vom Bruch, Felix and Herrmann, Harald and Silberhorn, Christine}, year={2024} }","short":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, C. Silberhorn, Optics Express (2024).","apa":"Babai-Hemati, J., vom Bruch, F., Herrmann, H., & Silberhorn, C. (2024). Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. https://doi.org/10.1364/oe.510319","ama":"Babai-Hemati J, vom Bruch F, Herrmann H, Silberhorn C. Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. Published online 2024. doi:10.1364/oe.510319","ieee":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, and C. Silberhorn, “Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters,” Optics Express, 2024, doi: 10.1364/oe.510319.","chicago":"Babai-Hemati, Jonas, Felix vom Bruch, Harald Herrmann, and Christine Silberhorn. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, 2024. https://doi.org/10.1364/oe.510319."}},{"article_number":"020350","language":[{"iso":"eng"}],"_id":"54544","project":[{"name":"MiLiQuant: Miniaturisierte Lichtquellen für den industriellen Einsatz in Quantensensoren und Quanten-Imaging-Systemen (MiLiQuant) - Teilvorhaben: Technologie und Theorie für MIR Quanten-Imaging Systeme","_id":"207","grant_number":"13N15065"},{"grant_number":"101070700","name":"MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing","_id":"571"},{"_id":"190","name":"E2TPA: Exploiting Entangled Two-Photon Absorption"}],"department":[{"_id":"288"},{"_id":"623"}],"user_id":"88149","abstract":[{"text":"The biphoton correlation time, a measure for the conditional uncertainty in the temporal arrival of two photons from a photon pair source, is a key performance identifier for many quantum spectroscopy applications, with shorter correlation times typically yielding better performance. Furthermore, it provides fundamental insight into the effects of dispersion on the biphoton state. Here, we show that a characteristic dependence of the width of the temporal interferogram can be exploited to obtain insights into the amount of second-order dispersion inside the interferometer and to retrieve actual and Fourier-limited ultrashort biphoton correlation times of around 100 fs. In the presented scheme, we simultaneously measure spectral and temporal interferograms at the output of an SU(1,1) interferometer based on an integrated broadband parametric down conversion source in a Ti:LiNbO3 waveguide.","lang":"eng"}],"status":"public","publication":"PRX Quantum","type":"journal_article","title":"Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer","doi":"10.1103/prxquantum.5.020350","date_updated":"2024-06-01T13:00:53Z","publisher":"American Physical Society (APS)","volume":5,"date_created":"2024-06-01T12:48:51Z","author":[{"first_name":"Franz","id":"88149","full_name":"Roeder, Franz","last_name":"Roeder"},{"last_name":"Pollmann","full_name":"Pollmann, René","id":"78890","first_name":"René"},{"first_name":"Michael","last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777"},{"orcid":"0000-0001-5718-358X","last_name":"Santandrea","full_name":"Santandrea, Matteo","id":"55095","first_name":"Matteo"},{"first_name":"Kai Hong","orcid":"0000-0003-1008-4976","last_name":"Luo","id":"36389","full_name":"Luo, Kai Hong"},{"first_name":"V.","last_name":"Quiring","full_name":"Quiring, V."},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"id":"13244","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"year":"2024","intvolume":" 5","citation":{"apa":"Roeder, F., Pollmann, R., Stefszky, M., Santandrea, M., Luo, K. H., Quiring, V., Ricken, R., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer. PRX Quantum, 5(2), Article 020350. https://doi.org/10.1103/prxquantum.5.020350","mla":"Roeder, Franz, et al. “Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer.” PRX Quantum, vol. 5, no. 2, 020350, American Physical Society (APS), 2024, doi:10.1103/prxquantum.5.020350.","short":"F. Roeder, R. Pollmann, M. Stefszky, M. Santandrea, K.H. Luo, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024).","bibtex":"@article{Roeder_Pollmann_Stefszky_Santandrea_Luo_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024, title={Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer}, volume={5}, DOI={10.1103/prxquantum.5.020350}, number={2020350}, journal={PRX Quantum}, publisher={American Physical Society (APS)}, author={Roeder, Franz and Pollmann, René and Stefszky, Michael and Santandrea, Matteo and Luo, Kai Hong and Quiring, V. and Ricken, Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","ama":"Roeder F, Pollmann R, Stefszky M, et al. Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer. PRX Quantum. 2024;5(2). doi:10.1103/prxquantum.5.020350","chicago":"Roeder, Franz, René Pollmann, Michael Stefszky, Matteo Santandrea, Kai Hong Luo, V. Quiring, Raimund Ricken, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer.” PRX Quantum 5, no. 2 (2024). https://doi.org/10.1103/prxquantum.5.020350.","ieee":"F. Roeder et al., “Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer,” PRX Quantum, vol. 5, no. 2, Art. no. 020350, 2024, doi: 10.1103/prxquantum.5.020350."},"publication_identifier":{"issn":["2691-3399"]},"publication_status":"published","issue":"2"},{"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"27150","_id":"54812","language":[{"iso":"eng"}],"article_number":"240802","publication":"Physical Review Letters","type":"journal_article","status":"public","volume":132,"date_created":"2024-06-19T06:36:54Z","author":[{"full_name":"Weinbrenner, Lisa T.","last_name":"Weinbrenner","first_name":"Lisa T."},{"first_name":"Nidhin","id":"71403","full_name":"Prasannan, Nidhin","last_name":"Prasannan"},{"full_name":"Hansenne, Kiara","last_name":"Hansenne","first_name":"Kiara"},{"first_name":"Sophia","last_name":"Denker","full_name":"Denker, Sophia"},{"full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Gühne, Otfried","last_name":"Gühne","first_name":"Otfried"}],"date_updated":"2024-06-19T06:59:45Z","publisher":"American Physical Society (APS)","doi":"10.1103/physrevlett.132.240802","title":"Certifying the Topology of Quantum Networks: Theory and Experiment","issue":"24","publication_identifier":{"issn":["0031-9007","1079-7114"]},"publication_status":"published","intvolume":" 132","citation":{"mla":"Weinbrenner, Lisa T., et al. “Certifying the Topology of Quantum Networks: Theory and Experiment.” Physical Review Letters, vol. 132, no. 24, 240802, American Physical Society (APS), 2024, doi:10.1103/physrevlett.132.240802.","bibtex":"@article{Weinbrenner_Prasannan_Hansenne_Denker_Sperling_Brecht_Silberhorn_Gühne_2024, title={Certifying the Topology of Quantum Networks: Theory and Experiment}, volume={132}, DOI={10.1103/physrevlett.132.240802}, number={24240802}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Weinbrenner, Lisa T. and Prasannan, Nidhin and Hansenne, Kiara and Denker, Sophia and Sperling, Jan and Brecht, Benjamin and Silberhorn, Christine and Gühne, Otfried}, year={2024} }","short":"L.T. Weinbrenner, N. Prasannan, K. Hansenne, S. Denker, J. Sperling, B. Brecht, C. Silberhorn, O. Gühne, Physical Review Letters 132 (2024).","apa":"Weinbrenner, L. T., Prasannan, N., Hansenne, K., Denker, S., Sperling, J., Brecht, B., Silberhorn, C., & Gühne, O. (2024). Certifying the Topology of Quantum Networks: Theory and Experiment. Physical Review Letters, 132(24), Article 240802. https://doi.org/10.1103/physrevlett.132.240802","ama":"Weinbrenner LT, Prasannan N, Hansenne K, et al. Certifying the Topology of Quantum Networks: Theory and Experiment. Physical Review Letters. 2024;132(24). doi:10.1103/physrevlett.132.240802","chicago":"Weinbrenner, Lisa T., Nidhin Prasannan, Kiara Hansenne, Sophia Denker, Jan Sperling, Benjamin Brecht, Christine Silberhorn, and Otfried Gühne. “Certifying the Topology of Quantum Networks: Theory and Experiment.” Physical Review Letters 132, no. 24 (2024). https://doi.org/10.1103/physrevlett.132.240802.","ieee":"L. T. Weinbrenner et al., “Certifying the Topology of Quantum Networks: Theory and Experiment,” Physical Review Letters, vol. 132, no. 24, Art. no. 240802, 2024, doi: 10.1103/physrevlett.132.240802."},"year":"2024"},{"publisher":"American Physical Society (APS)","date_created":"2024-07-11T07:23:08Z","title":"Electrical trace analysis of superconducting nanowire photon-number-resolving detectors","issue":"1","year":"2024","language":[{"iso":"eng"}],"publication":"Physical Review Applied","abstract":[{"lang":"eng","text":"We apply principal component analysis (PCA) to a set of electrical output signals from a commercially available superconducting nanowire single-photon detector (SNSPD) to investigate their photon-number-resolving capability. We find that the rising edge as well as the amplitude of the electrical signal have the most dependence on photon number. Accurately measuring the rising edge while simultaneously measuring the voltage of the pulse amplitude maximizes the photon-number resolution of SNSPDs. Using an optimal basis of principal components, we show unambiguous discrimination between one- and two-photon events, as well as partial resolution up to five photons. This expands the use case of SNSPDs to photon-counting experiments, without the need of detector multiplexing architectures.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n "}],"oa":"1","date_updated":"2024-07-11T09:36:00Z","author":[{"first_name":"Timon","last_name":"Schapeler","orcid":"0000-0001-7652-1716","full_name":"Schapeler, Timon","id":"55629"},{"full_name":"Lamberty, Niklas","last_name":"Lamberty","first_name":"Niklas"},{"last_name":"Hummel","orcid":"0000-0001-8627-2119","id":"83846","full_name":"Hummel, Thomas","first_name":"Thomas"},{"last_name":"Schlue","id":"63579","full_name":"Schlue, Fabian","first_name":"Fabian"},{"last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael","first_name":"Michael"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"volume":22,"main_file_link":[{"open_access":"1"}],"doi":"10.1103/physrevapplied.22.014024","publication_status":"published","publication_identifier":{"issn":["2331-7019"]},"citation":{"ama":"Schapeler T, Lamberty N, Hummel T, et al. Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. Physical Review Applied. 2024;22(1). doi:10.1103/physrevapplied.22.014024","chicago":"Schapeler, Timon, Niklas Lamberty, Thomas Hummel, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Electrical Trace Analysis of Superconducting Nanowire Photon-Number-Resolving Detectors.” Physical Review Applied 22, no. 1 (2024). https://doi.org/10.1103/physrevapplied.22.014024.","ieee":"T. Schapeler et al., “Electrical trace analysis of superconducting nanowire photon-number-resolving detectors,” Physical Review Applied, vol. 22, no. 1, Art. no. 014024, 2024, doi: 10.1103/physrevapplied.22.014024.","apa":"Schapeler, T., Lamberty, N., Hummel, T., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., & Bartley, T. (2024). Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. Physical Review Applied, 22(1), Article 014024. https://doi.org/10.1103/physrevapplied.22.014024","bibtex":"@article{Schapeler_Lamberty_Hummel_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2024, title={Electrical trace analysis of superconducting nanowire photon-number-resolving detectors}, volume={22}, DOI={10.1103/physrevapplied.22.014024}, number={1014024}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Schapeler, Timon and Lamberty, Niklas and Hummel, Thomas and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, year={2024} }","short":"T. Schapeler, N. Lamberty, T. Hummel, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, Physical Review Applied 22 (2024).","mla":"Schapeler, Timon, et al. “Electrical Trace Analysis of Superconducting Nanowire Photon-Number-Resolving Detectors.” Physical Review Applied, vol. 22, no. 1, 014024, American Physical Society (APS), 2024, doi:10.1103/physrevapplied.22.014024."},"intvolume":" 22","project":[{"call_identifier":"ERC","_id":"239","name":"QuESADILLA: ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications","grant_number":"101042399"},{"grant_number":"13N16103","_id":"191","name":"PhoQuant--QCTest: PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform"}],"_id":"55174","user_id":"55629","department":[{"_id":"15"},{"_id":"623"}],"article_number":"014024","type":"journal_article","status":"public"},{"issue":"13","year":"2024","date_created":"2024-06-10T11:18:06Z","publisher":"Optica Publishing Group","title":"Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides","publication":"Optics Express","file":[{"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","file_size":4004782,"date_created":"2024-06-10T11:25:00Z","creator":"fossie","date_updated":"2024-06-10T11:25:00Z","relation":"main_file","content_type":"application/pdf"}],"abstract":[{"lang":"eng","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."}],"language":[{"iso":"eng"}],"ddc":["530"],"keyword":["tet_topic_waveguide"],"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"has_accepted_license":"1","citation":{"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. Optics Express. 2024;32(13):22878. doi:10.1364/oe.521766","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.” Optics Express 32, no. 13 (2024): 22878. https://doi.org/10.1364/oe.521766.","ieee":"M. Hammer et al., “Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides,” Optics Express, vol. 32, no. 13, p. 22878, 2024, doi: 10.1364/oe.521766.","apa":"Hammer, M., Babel, S., Farheen, H., Padberg, L., Scheytt, J. C., Silberhorn, C., & Förstner, J. (2024). Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides. Optics Express, 32(13), 22878. https://doi.org/10.1364/oe.521766","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={10.1364/oe.521766}, 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} }","mla":"Hammer, Manfred, et al. “Estimation of Losses Caused by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.” Optics Express, vol. 32, no. 13, Optica Publishing Group, 2024, p. 22878, doi:10.1364/oe.521766.","short":"M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878."},"intvolume":" 32","page":"22878","author":[{"last_name":"Hammer","orcid":"0000-0002-6331-9348","full_name":"Hammer, Manfred","id":"48077","first_name":"Manfred"},{"first_name":"Silia","orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","id":"63231","full_name":"Babel, Silia"},{"full_name":"Farheen, Henna","id":"53444","orcid":"0000-0001-7730-3489","last_name":"Farheen","first_name":"Henna"},{"first_name":"Laura","last_name":"Padberg","id":"40300","full_name":"Padberg, Laura"},{"id":"37144","full_name":"Scheytt, J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","first_name":"J. Christoph"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens","first_name":"Jens"}],"volume":32,"date_updated":"2024-07-22T07:43:02Z","oa":"1","doi":"10.1364/oe.521766","type":"journal_article","status":"public","user_id":"158","department":[{"_id":"61"},{"_id":"429"},{"_id":"623"},{"_id":"263"},{"_id":"288"}],"project":[{"grant_number":"231447078","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"grant_number":"231447078","name":"TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI (C11*)","_id":"175"},{"name":"TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)","_id":"167","grant_number":"231447078"},{"grant_number":"PROFILNRW-2020-067","name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266"}],"_id":"54668","file_date_updated":"2024-06-10T11:25:00Z"},{"article_number":"033194","language":[{"iso":"eng"}],"_id":"55737","user_id":"48188","department":[{"_id":"623"}],"abstract":[{"lang":"eng","text":"We report on a photonic simulator of the critical state forming at the quantum phase transition between topologically distinct Anderson insulator phases. We observe a time-staggered profile in the circular photon polarization, which originates from the interplay of a chiral and sublattice symmetry, and has recently been suggested as a signature for topological Anderson criticality within the setup. We discuss the role of statistical detuning from criticality and show that the controlled breaking of phase coherence removes the signal, revealing its origin in quantum coherence.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n "}],"status":"public","type":"journal_article","publication":"Physical Review Research","title":"Experimental observation of topological quantum criticality","doi":"10.1103/physrevresearch.6.033194","date_updated":"2024-08-22T10:47:57Z","publisher":"American Physical Society (APS)","author":[{"id":"48188","full_name":"Barkhofen, Sonja","last_name":"Barkhofen","first_name":"Sonja"},{"first_name":"Syamsundar","last_name":"De","full_name":"De, Syamsundar"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"first_name":"Alexander","full_name":"Altland, Alexander","last_name":"Altland"},{"full_name":"Bagrets, Dmitry","last_name":"Bagrets","first_name":"Dmitry"},{"first_name":"Kun Woo","full_name":"Kim, Kun Woo","last_name":"Kim"},{"last_name":"Micklitz","full_name":"Micklitz, Tobias","first_name":"Tobias"}],"date_created":"2024-08-22T10:47:06Z","volume":6,"year":"2024","citation":{"chicago":"Barkhofen, Sonja, Syamsundar De, Jan Sperling, Christine Silberhorn, Alexander Altland, Dmitry Bagrets, Kun Woo Kim, and Tobias Micklitz. “Experimental Observation of Topological Quantum Criticality.” Physical Review Research 6, no. 3 (2024). https://doi.org/10.1103/physrevresearch.6.033194.","ieee":"S. Barkhofen et al., “Experimental observation of topological quantum criticality,” Physical Review Research, vol. 6, no. 3, Art. no. 033194, 2024, doi: 10.1103/physrevresearch.6.033194.","ama":"Barkhofen S, De S, Sperling J, et al. Experimental observation of topological quantum criticality. Physical Review Research. 2024;6(3). doi:10.1103/physrevresearch.6.033194","apa":"Barkhofen, S., De, S., Sperling, J., Silberhorn, C., Altland, A., Bagrets, D., Kim, K. W., & Micklitz, T. (2024). Experimental observation of topological quantum criticality. Physical Review Research, 6(3), Article 033194. https://doi.org/10.1103/physrevresearch.6.033194","bibtex":"@article{Barkhofen_De_Sperling_Silberhorn_Altland_Bagrets_Kim_Micklitz_2024, title={Experimental observation of topological quantum criticality}, volume={6}, DOI={10.1103/physrevresearch.6.033194}, number={3033194}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Barkhofen, Sonja and De, Syamsundar and Sperling, Jan and Silberhorn, Christine and Altland, Alexander and Bagrets, Dmitry and Kim, Kun Woo and Micklitz, Tobias}, year={2024} }","short":"S. Barkhofen, S. De, J. Sperling, C. Silberhorn, A. Altland, D. Bagrets, K.W. Kim, T. Micklitz, Physical Review Research 6 (2024).","mla":"Barkhofen, Sonja, et al. “Experimental Observation of Topological Quantum Criticality.” Physical Review Research, vol. 6, no. 3, 033194, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.033194."},"intvolume":" 6","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"issue":"3"},{"abstract":[{"text":"Lithium niobate and lithium tantalate are among the most widespread materials for nonlinear, integrated photonics. Mixed crystals with arbitrary Nb–Ta ratios provide an additional degree of freedom to not only tune materials properties, such as the birefringence but also leverage the advantages of the singular compounds, for example, by combining the thermal stability of lithium tantalate with the larger nonlinear or piezoelectric constants of lithium niobate. Periodic poling allows to achieve phase-matching independent of waveguide geometry and is, therefore, one of the commonly used methods in integrated nonlinear optics. For mixed crystals, periodic poling has been challenging so far due to the lack of homogeneous, mono-domain crystals, which severely inhibit domain growth and nucleation. In this work, we investigate surface-near (<1μm depth) domain inversion on x-cut lithium niobate tantalate mixed crystals via electric field poling and lithographically structured electrodes. We find that naturally occurring head-to-head or tail-to-tail domain walls in the as-grown crystal inhibit domain inversion at a larger scale. However, periodic poling is possible if the gap size between the poling electrodes is of the same order of magnitude or smaller than the average size of naturally occurring domains. This work provides the basis for the nonlinear optical application of lithium niobate tantalate mixed crystals.","lang":"eng"}],"status":"public","publication":"Applied Physics Letters","type":"journal_article","language":[{"iso":"eng"}],"_id":"57028","project":[{"grant_number":"231447078","_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"}],"department":[{"_id":"15"},{"_id":"623"},{"_id":"230"},{"_id":"288"}],"user_id":"61375","year":"2024","intvolume":" 125","citation":{"ama":"Bollmers L, Babai-Hemati T, Koppitz B, et al. Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics Letters. 2024;125(15). doi:10.1063/5.0210972","chicago":"Bollmers, Laura, Tobias Babai-Hemati, Boris Koppitz, Christof Eigner, Laura Padberg, Michael Rüsing, Lukas M. Eng, and Christine Silberhorn. “Surface-near Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.” Applied Physics Letters 125, no. 15 (2024). https://doi.org/10.1063/5.0210972.","ieee":"L. Bollmers et al., “Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals,” Applied Physics Letters, vol. 125, no. 15, 2024, doi: 10.1063/5.0210972.","bibtex":"@article{Bollmers_Babai-Hemati_Koppitz_Eigner_Padberg_Rüsing_Eng_Silberhorn_2024, title={Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals}, volume={125}, DOI={10.1063/5.0210972}, number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Bollmers, Laura and Babai-Hemati, Tobias and Koppitz, Boris and Eigner, Christof and Padberg, Laura and Rüsing, Michael and Eng, Lukas M. and Silberhorn, Christine}, year={2024} }","short":"L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing, L.M. Eng, C. Silberhorn, Applied Physics Letters 125 (2024).","mla":"Bollmers, Laura, et al. “Surface-near Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.” Applied Physics Letters, vol. 125, no. 15, AIP Publishing, 2024, doi:10.1063/5.0210972.","apa":"Bollmers, L., Babai-Hemati, T., Koppitz, B., Eigner, C., Padberg, L., Rüsing, M., Eng, L. M., & Silberhorn, C. (2024). Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics Letters, 125(15). https://doi.org/10.1063/5.0210972"},"publication_identifier":{"issn":["0003-6951","1077-3118"]},"publication_status":"published","issue":"15","title":"Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals","doi":"10.1063/5.0210972","date_updated":"2024-11-15T09:15:08Z","publisher":"AIP Publishing","volume":125,"date_created":"2024-11-13T08:06:59Z","author":[{"full_name":"Bollmers, Laura","id":"61375","last_name":"Bollmers","first_name":"Laura"},{"full_name":"Babai-Hemati, Tobias","last_name":"Babai-Hemati","first_name":"Tobias"},{"full_name":"Koppitz, Boris","last_name":"Koppitz","first_name":"Boris"},{"full_name":"Eigner, Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"first_name":"Michael","full_name":"Rüsing, Michael","id":"22501","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}]},{"language":[{"iso":"eng"}],"department":[{"_id":"58"},{"_id":"623"}],"user_id":"13256","_id":"57107","project":[{"name":"TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI (C11*)","_id":"175","grant_number":"231447078"}],"status":"public","type":"conference_abstract","conference":{"location":"Paderborn","end_date":"2024-10-10","start_date":"2024-10-08","name":"Quantum Photonics Spotlight"},"title":"Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology","date_created":"2024-11-15T10:20:33Z","author":[{"full_name":"Kress, Christian","id":"13256","last_name":"Kress","first_name":"Christian"},{"id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe","first_name":"Tobias"},{"full_name":"Mihaylov, Martin Miroslavov","id":"42449","last_name":"Mihaylov","first_name":"Martin Miroslavov"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"full_name":"Scheytt, J. Christoph","id":"37144","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","first_name":"J. Christoph"}],"date_updated":"2024-11-15T10:21:02Z","citation":{"short":"C. Kress, T. Schwabe, M.M. Mihaylov, C. Silberhorn, J.C. Scheytt, in: 2024.","bibtex":"@inproceedings{Kress_Schwabe_Mihaylov_Silberhorn_Scheytt_2024, title={Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology}, author={Kress, Christian and Schwabe, Tobias and Mihaylov, Martin Miroslavov and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }","mla":"Kress, Christian, et al. Integrated Pulse Generator for Photon Pair Generation Using Lithium Niobate on Insulator Technology. 2024.","apa":"Kress, C., Schwabe, T., Mihaylov, M. M., Silberhorn, C., & Scheytt, J. C. (2024). Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology. Quantum Photonics Spotlight, Paderborn.","ama":"Kress C, Schwabe T, Mihaylov MM, Silberhorn C, Scheytt JC. Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology. In: ; 2024.","ieee":"C. Kress, T. Schwabe, M. M. Mihaylov, C. Silberhorn, and J. C. Scheytt, “Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology,” presented at the Quantum Photonics Spotlight, Paderborn, 2024.","chicago":"Kress, Christian, Tobias Schwabe, Martin Miroslavov Mihaylov, Christine Silberhorn, and J. Christoph Scheytt. “Integrated Pulse Generator for Photon Pair Generation Using Lithium Niobate on Insulator Technology,” 2024."},"year":"2024"},{"department":[{"_id":"623"},{"_id":"58"}],"user_id":"38254","_id":"57089","publication_date":"2024-10-24","type":"patent","status":"public","date_created":"2024-11-14T16:11:10Z","author":[{"first_name":"Stephan","full_name":"Kruse, Stephan","id":"38254","last_name":"Kruse"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Laura Maria","full_name":"Serino, Laura Maria","id":"88242","last_name":"Serino"}],"ipc":"G01S 7/481","date_updated":"2024-11-15T13:58:41Z","title":"Quantenoptisch-unterstütztes Sende-/Empfangssystem","ipn":"10 2023 203 697.5","citation":{"apa":"Kruse, S., Brecht, B., Silberhorn, C., & Serino, L. M. (2024). Quantenoptisch-unterstütztes Sende-/Empfangssystem.","short":"S. Kruse, B. Brecht, C. Silberhorn, L.M. Serino, (2024).","bibtex":"@article{Kruse_Brecht_Silberhorn_Serino_2024, title={Quantenoptisch-unterstütztes Sende-/Empfangssystem}, author={Kruse, Stephan and Brecht, Benjamin and Silberhorn, Christine and Serino, Laura Maria}, year={2024} }","mla":"Kruse, Stephan, et al. Quantenoptisch-Unterstütztes Sende-/Empfangssystem. 2024.","ieee":"S. Kruse, B. Brecht, C. Silberhorn, and L. M. Serino, “Quantenoptisch-unterstütztes Sende-/Empfangssystem.” 2024.","chicago":"Kruse, Stephan, Benjamin Brecht, Christine Silberhorn, and Laura Maria Serino. “Quantenoptisch-Unterstütztes Sende-/Empfangssystem,” 2024.","ama":"Kruse S, Brecht B, Silberhorn C, Serino LM. Quantenoptisch-unterstütztes Sende-/Empfangssystem. Published online 2024."},"year":"2024"},{"title":"Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals","doi":"10.24425/opelre.2024.150611","publisher":"Polish Academy of Sciences Chancellery","date_updated":"2024-12-08T14:45:39Z","author":[{"last_name":"Meier","full_name":"Meier, Patrick A.","first_name":"Patrick A."},{"full_name":"Keuker-Baumann, Susanne","last_name":"Keuker-Baumann","first_name":"Susanne"},{"first_name":"Thorsten","full_name":"Röder, Thorsten","last_name":"Röder"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"first_name":"Raimund","full_name":"Ricken, Raimund","last_name":"Ricken"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Heinz-Siegfried","full_name":"Kitzerow, Heinz-Siegfried","id":"254","last_name":"Kitzerow"}],"date_created":"2024-12-08T14:37:43Z","year":"2024","page":"150611-150611","citation":{"mla":"Meier, Patrick A., et al. “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals.” Opto-Electronics Review, Polish Academy of Sciences Chancellery, 2024, pp. 150611–150611, doi:10.24425/opelre.2024.150611.","bibtex":"@article{Meier_Keuker-Baumann_Röder_Herrmann_Ricken_Silberhorn_Kitzerow_2024, title={Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals}, DOI={10.24425/opelre.2024.150611}, journal={Opto-Electronics Review}, publisher={Polish Academy of Sciences Chancellery}, author={Meier, Patrick A. and Keuker-Baumann, Susanne and Röder, Thorsten and Herrmann, Harald and Ricken, Raimund and Silberhorn, Christine and Kitzerow, Heinz-Siegfried}, year={2024}, pages={150611–150611} }","short":"P.A. Meier, S. Keuker-Baumann, T. Röder, H. Herrmann, R. Ricken, C. Silberhorn, H.-S. Kitzerow, Opto-Electronics Review (2024) 150611–150611.","apa":"Meier, P. A., Keuker-Baumann, S., Röder, T., Herrmann, H., Ricken, R., Silberhorn, C., & Kitzerow, H.-S. (2024). Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals. Opto-Electronics Review, 150611–150611. https://doi.org/10.24425/opelre.2024.150611","ieee":"P. A. Meier et al., “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals,” Opto-Electronics Review, pp. 150611–150611, 2024, doi: 10.24425/opelre.2024.150611.","chicago":"Meier, Patrick A., Susanne Keuker-Baumann, Thorsten Röder, Harald Herrmann, Raimund Ricken, Christine Silberhorn, and Heinz-Siegfried Kitzerow. “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals.” Opto-Electronics Review, 2024, 150611–150611. https://doi.org/10.24425/opelre.2024.150611.","ama":"Meier PA, Keuker-Baumann S, Röder T, et al. Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals. Opto-Electronics Review. Published online 2024:150611-150611. doi:10.24425/opelre.2024.150611"},"publication_identifier":{"issn":["1896-3757"]},"publication_status":"published","language":[{"iso":"pol"}],"_id":"57619","department":[{"_id":"313"},{"_id":"230"},{"_id":"2"}],"user_id":"254","abstract":[{"text":"Ferroelectric liquid crystals exhibiting a chiral smectic C* phase are deposited on z cut periodically poled lithium niobate substrates and investigated by polarized optical microscopy. While the pure substrates placed between crossed polarizers and observed in transmission appear dark, uniformly aligned liquid crystal films deposited on these substrates show alternating domains with varying brightness. This effect can be attributed to the well-known coupling between the direction of the spontaneous polarization and the optical axis in the birefringent ferroelectric smectic C* phase. Quantitative measurements of the tilt angle between the local optical axis and the smectic layer normal confirm antiparallel orientations of spontaneous polarization of the liquid crystal from domain to domain, as expected by the periodic poling of the lithium niobate substrate. This effect provides a valuable non-destructive method of optical inspection of the quality of periodically poled ferroelectric substrates, which plays an important role in achieving quasi-phase-matching in non-linear optical applications.","lang":"eng"}],"status":"public","publication":"Opto-Electronics Review","type":"journal_article"},{"intvolume":" 110","citation":{"apa":"Krishnaswamy, S., Schlue, F., Ares, L., Dyachuk, V., Stefszky, M., Brecht, B., Silberhorn, C., & Sperling, J. (2024). Experimental retrieval of photon statistics from click detection. Physical Review A, 110(2), Article 023717. https://doi.org/10.1103/physreva.110.023717","short":"S. Krishnaswamy, F. Schlue, L. Ares, V. Dyachuk, M. Stefszky, B. Brecht, C. Silberhorn, J. Sperling, Physical Review A 110 (2024).","mla":"Krishnaswamy, Suchitra, et al. “Experimental Retrieval of Photon Statistics from Click Detection.” Physical Review A, vol. 110, no. 2, 023717, American Physical Society (APS), 2024, doi:10.1103/physreva.110.023717.","bibtex":"@article{Krishnaswamy_Schlue_Ares_Dyachuk_Stefszky_Brecht_Silberhorn_Sperling_2024, title={Experimental retrieval of photon statistics from click detection}, volume={110}, DOI={10.1103/physreva.110.023717}, number={2023717}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Krishnaswamy, Suchitra and Schlue, Fabian and Ares, L. and Dyachuk, V. and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Sperling, Jan}, year={2024} }","ieee":"S. Krishnaswamy et al., “Experimental retrieval of photon statistics from click detection,” Physical Review A, vol. 110, no. 2, Art. no. 023717, 2024, doi: 10.1103/physreva.110.023717.","chicago":"Krishnaswamy, Suchitra, Fabian Schlue, L. Ares, V. Dyachuk, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Jan Sperling. “Experimental Retrieval of Photon Statistics from Click Detection.” Physical Review A 110, no. 2 (2024). https://doi.org/10.1103/physreva.110.023717.","ama":"Krishnaswamy S, Schlue F, Ares L, et al. Experimental retrieval of photon statistics from click detection. Physical Review A. 2024;110(2). doi:10.1103/physreva.110.023717"},"year":"2024","issue":"2","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","doi":"10.1103/physreva.110.023717","title":"Experimental retrieval of photon statistics from click detection","volume":110,"author":[{"first_name":"Suchitra","id":"78347","full_name":"Krishnaswamy, Suchitra","last_name":"Krishnaswamy"},{"full_name":"Schlue, Fabian","id":"63579","last_name":"Schlue","first_name":"Fabian"},{"last_name":"Ares","full_name":"Ares, L.","first_name":"L."},{"last_name":"Dyachuk","full_name":"Dyachuk, V.","first_name":"V."},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","id":"75127","full_name":"Sperling, Jan"}],"date_created":"2024-12-11T15:33:08Z","publisher":"American Physical Society (APS)","date_updated":"2024-12-11T15:35:07Z","status":"public","publication":"Physical Review A","type":"journal_article","language":[{"iso":"eng"}],"article_number":"023717","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"429"},{"_id":"623"}],"user_id":"75127","_id":"57743"},{"language":[{"iso":"eng"}],"department":[{"_id":"58"}],"user_id":"38254","_id":"57108","status":"public","type":"conference","doi":"10.5281/zenodo.14934743","title":"A Quantum Pulse Gate Enhanced Photonic Radar Architecture ","author":[{"last_name":"Kruse","full_name":"Kruse, Stephan","id":"38254","first_name":"Stephan"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"}],"date_created":"2024-11-15T10:17:09Z","date_updated":"2025-02-27T06:06:49Z","citation":{"ama":"Kruse S, Brecht B, Silberhorn C. A Quantum Pulse Gate Enhanced Photonic Radar Architecture . In: ; 2024. doi:10.5281/zenodo.14934743","chicago":"Kruse, Stephan, Benjamin Brecht, and Christine Silberhorn. “A Quantum Pulse Gate Enhanced Photonic Radar Architecture ,” 2024. https://doi.org/10.5281/zenodo.14934743.","ieee":"S. Kruse, B. Brecht, and C. Silberhorn, “A Quantum Pulse Gate Enhanced Photonic Radar Architecture ,” 2024, doi: 10.5281/zenodo.14934743.","apa":"Kruse, S., Brecht, B., & Silberhorn, C. (2024). A Quantum Pulse Gate Enhanced Photonic Radar Architecture . https://doi.org/10.5281/zenodo.14934743","short":"S. Kruse, B. Brecht, C. Silberhorn, in: 2024.","mla":"Kruse, Stephan, et al. A Quantum Pulse Gate Enhanced Photonic Radar Architecture . 2024, doi:10.5281/zenodo.14934743.","bibtex":"@inproceedings{Kruse_Brecht_Silberhorn_2024, title={A Quantum Pulse Gate Enhanced Photonic Radar Architecture }, DOI={10.5281/zenodo.14934743}, author={Kruse, Stephan and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }"},"year":"2024"},{"department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"user_id":"22501","_id":"59259","language":[{"iso":"eng"}],"type":"misc","status":"public","date_created":"2025-04-02T11:24:23Z","author":[{"first_name":"Tobias","id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe"},{"id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael"},{"first_name":"Niels","full_name":"Staal, Niels","last_name":"Staal"},{"full_name":"Schwengelbeck, Max","last_name":"Schwengelbeck","first_name":"Max"},{"last_name":"Bollmers","full_name":"Bollmers, Laura","id":"61375","first_name":"Laura"},{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","full_name":"Scheytt, J. Christoph","id":"37144"}],"publisher":"Zenodo","date_updated":"2025-04-03T12:34:56Z","doi":"10.5281/zenodo.15124929","title":"Quantum photonic systems in CMOS compatible silicon nitride technology ","citation":{"apa":"Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg, L., Eigner, C., Silberhorn, C., & Scheytt, J. C. (2024). Quantum photonic systems in CMOS compatible silicon nitride technology . Zenodo. https://doi.org/10.5281/zenodo.15124929","mla":"Schwabe, Tobias, et al. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology . Zenodo, 2024, doi:10.5281/zenodo.15124929.","bibtex":"@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024, title={Quantum photonic systems in CMOS compatible silicon nitride technology }, DOI={10.5281/zenodo.15124929}, publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }","short":"T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg, C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology , Zenodo, 2024.","ama":"Schwabe T, Rüsing M, Staal N, et al. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology . Zenodo; 2024. doi:10.5281/zenodo.15124929","chicago":"Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph Scheytt. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology . Zenodo, 2024. https://doi.org/10.5281/zenodo.15124929.","ieee":"T. Schwabe et al., Quantum photonic systems in CMOS compatible silicon nitride technology . Zenodo, 2024."},"year":"2024"},{"publication":"Optica Quantum","type":"journal_article","status":"public","department":[{"_id":"288"},{"_id":"623"},{"_id":"288"}],"user_id":"63574","_id":"56267","project":[{"name":"QuICHE: Quanteninformation und Quantenkommunikation mit hochdimensionaler Informationskodierung (QuICHE)","_id":"211"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["2837-6714"]},"publication_status":"published","citation":{"short":"L. Serino, W. Ridder, A. Bhattacharjee, J. Gil López, B. Brecht, C. Silberhorn, Optica Quantum (2024).","mla":"Serino, Laura, et al. “Orchestrating Time and Color: A Programmable Source of High-Dimensional Entanglement.” Optica Quantum, Optica Publishing Group, 2024, doi:10.1364/opticaq.532334.","bibtex":"@article{Serino_Ridder_Bhattacharjee_Gil López_Brecht_Silberhorn_2024, title={Orchestrating time and color: a programmable source of high-dimensional entanglement}, DOI={10.1364/opticaq.532334}, journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Serino, Laura and Ridder, Werner and Bhattacharjee, Abhinandan and Gil López, Jano and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","apa":"Serino, L., Ridder, W., Bhattacharjee, A., Gil López, J., Brecht, B., & Silberhorn, C. (2024). Orchestrating time and color: a programmable source of high-dimensional entanglement. Optica Quantum. https://doi.org/10.1364/opticaq.532334","ama":"Serino L, Ridder W, Bhattacharjee A, Gil López J, Brecht B, Silberhorn C. Orchestrating time and color: a programmable source of high-dimensional entanglement. Optica Quantum. Published online 2024. doi:10.1364/opticaq.532334","chicago":"Serino, Laura, Werner Ridder, Abhinandan Bhattacharjee, Jano Gil López, Benjamin Brecht, and Christine Silberhorn. “Orchestrating Time and Color: A Programmable Source of High-Dimensional Entanglement.” Optica Quantum, 2024. https://doi.org/10.1364/opticaq.532334.","ieee":"L. Serino, W. Ridder, A. Bhattacharjee, J. Gil López, B. Brecht, and C. Silberhorn, “Orchestrating time and color: a programmable source of high-dimensional entanglement,” Optica Quantum, 2024, doi: 10.1364/opticaq.532334."},"year":"2024","date_created":"2024-09-27T11:46:59Z","author":[{"first_name":"Laura","id":"88242","full_name":"Serino, Laura","last_name":"Serino"},{"last_name":"Ridder","full_name":"Ridder, Werner","id":"63574","first_name":"Werner"},{"first_name":"Abhinandan","last_name":"Bhattacharjee","id":"95902","full_name":"Bhattacharjee, Abhinandan"},{"full_name":"Gil López, Jano","id":"51223","last_name":"Gil López","first_name":"Jano"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"date_updated":"2025-12-01T08:49:46Z","publisher":"Optica Publishing Group","doi":"10.1364/opticaq.532334","title":"Orchestrating time and color: a programmable source of high-dimensional entanglement"},{"issue":"1","publication_status":"published","publication_identifier":{"issn":["2633-4356"]},"citation":{"apa":"Thiele, F., Hummel, T., Lange, N. A., Dreher, F., Protte, M., Bruch, F. vom, Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2024). Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. Materials for Quantum Technology, 4(1), Article 015402. https://doi.org/10.1088/2633-4356/ad207d","bibtex":"@article{Thiele_Hummel_Lange_Dreher_Protte_Bruch_Lengeling_Herrmann_Eigner_Silberhorn_et al._2024, title={Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics}, volume={4}, DOI={10.1088/2633-4356/ad207d}, number={1015402}, journal={Materials for Quantum Technology}, publisher={IOP Publishing}, author={Thiele, Frederik and Hummel, Thomas and Lange, Nina Amelie and Dreher, Felix and Protte, Maximilian and Bruch, Felix vom and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and et al.}, year={2024} }","short":"F. Thiele, T. Hummel, N.A. Lange, F. Dreher, M. Protte, F. vom Bruch, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Materials for Quantum Technology 4 (2024).","mla":"Thiele, Frederik, et al. “Pyroelectric Influence on Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.” Materials for Quantum Technology, vol. 4, no. 1, 015402, IOP Publishing, 2024, doi:10.1088/2633-4356/ad207d.","ama":"Thiele F, Hummel T, Lange NA, et al. Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. Materials for Quantum Technology. 2024;4(1). doi:10.1088/2633-4356/ad207d","chicago":"Thiele, Frederik, Thomas Hummel, Nina Amelie Lange, Felix Dreher, Maximilian Protte, Felix vom Bruch, Sebastian Lengeling, et al. “Pyroelectric Influence on Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.” Materials for Quantum Technology 4, no. 1 (2024). https://doi.org/10.1088/2633-4356/ad207d.","ieee":"F. Thiele et al., “Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics,” Materials for Quantum Technology, vol. 4, no. 1, Art. no. 015402, 2024, doi: 10.1088/2633-4356/ad207d."},"intvolume":" 4","year":"2024","date_created":"2024-02-16T07:56:44Z","author":[{"first_name":"Frederik","last_name":"Thiele","orcid":"0000-0003-0663-5587","full_name":"Thiele, Frederik","id":"50819"},{"first_name":"Thomas","id":"83846","full_name":"Hummel, Thomas","last_name":"Hummel","orcid":"0000-0001-8627-2119"},{"orcid":"0000-0001-6624-7098","last_name":"Lange","id":"56843","full_name":"Lange, Nina Amelie","first_name":"Nina Amelie"},{"last_name":"Dreher","full_name":"Dreher, Felix","first_name":"Felix"},{"full_name":"Protte, Maximilian","last_name":"Protte","first_name":"Maximilian"},{"first_name":"Felix vom","full_name":"Bruch, Felix vom","last_name":"Bruch"},{"last_name":"Lengeling","id":"44373","full_name":"Lengeling, Sebastian","first_name":"Sebastian"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"id":"49683","full_name":"Bartley, Tim","last_name":"Bartley","first_name":"Tim"}],"volume":4,"publisher":"IOP Publishing","date_updated":"2025-12-15T09:23:02Z","doi":"10.1088/2633-4356/ad207d","title":"Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics","type":"journal_article","publication":"Materials for Quantum Technology","status":"public","abstract":[{"text":"Abstract\r\n Lithium niobate has emerged as a promising platform for integrated quantum optics, enabling efficient generation, manipulation, and detection of quantum states of light. However, integrating single-photon detectors requires cryogenic operating temperatures, since the best performing detectors are based on narrow superconducting wires. While previous studies have demonstrated the operation of quantum light sources and electro-optic modulators in LiNbO3 at cryogenic temperatures, the thermal transition between room temperature and cryogenic conditions introduces additional effects that can significantly influence device performance. In this paper, we investigate the generation of pyroelectric charges and their impact on the optical properties of lithium niobate waveguides when changing from room temperature to 25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate this with fast changes in the birefringence acquired through the Sénarmont-method. Both electrical and optical influence of the pyroelectric effect occur predominantly at temperatures above 100 K.","lang":"eng"}],"user_id":"56843","project":[{"name":"TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher Filterung unter Verwendung integrierter supraleitender Detektoren","_id":"171"}],"_id":"51356","language":[{"iso":"eng"}],"article_number":"015402","keyword":["General Earth and Planetary Sciences","General Environmental Science"]},{"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","issue":"1","year":"2024","intvolume":" 110","citation":{"apa":"Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., & Sánchez-Soto, L. L. (2024). Relative-belief inference in quantum information theory. Physical Review A, 110(1), Article 012231. https://doi.org/10.1103/physreva.110.012231","mla":"Teo, Y. S., et al. “Relative-Belief Inference in Quantum Information Theory.” Physical Review A, vol. 110, no. 1, 012231, American Physical Society (APS), 2024, doi:10.1103/physreva.110.012231.","bibtex":"@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Relative-belief inference in quantum information theory}, volume={110}, DOI={10.1103/physreva.110.012231}, number={1012231}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Teo, Y. S. and Shringarpure, S. U. and Jeong, H. and Prasannan, Nidhin and Brecht, Benjamin and Silberhorn, Christine and Evans, M. and Mogilevtsev, D. and Sánchez-Soto, L. L.}, year={2024} }","short":"Y.S. Teo, S.U. Shringarpure, H. Jeong, N. Prasannan, B. Brecht, C. Silberhorn, M. Evans, D. Mogilevtsev, L.L. Sánchez-Soto, Physical Review A 110 (2024).","ama":"Teo YS, Shringarpure SU, Jeong H, et al. Relative-belief inference in quantum information theory. Physical Review A. 2024;110(1). doi:10.1103/physreva.110.012231","ieee":"Y. S. Teo et al., “Relative-belief inference in quantum information theory,” Physical Review A, vol. 110, no. 1, Art. no. 012231, 2024, doi: 10.1103/physreva.110.012231.","chicago":"Teo, Y. S., S. U. Shringarpure, H. Jeong, Nidhin Prasannan, Benjamin Brecht, Christine Silberhorn, M. Evans, D. Mogilevtsev, and L. L. Sánchez-Soto. “Relative-Belief Inference in Quantum Information Theory.” Physical Review A 110, no. 1 (2024). https://doi.org/10.1103/physreva.110.012231."},"publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:12:40Z","volume":110,"author":[{"first_name":"Y. S.","full_name":"Teo, Y. S.","last_name":"Teo"},{"first_name":"S. U.","last_name":"Shringarpure","full_name":"Shringarpure, S. U."},{"first_name":"H.","full_name":"Jeong, H.","last_name":"Jeong"},{"first_name":"Nidhin","full_name":"Prasannan, Nidhin","id":"71403","last_name":"Prasannan"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"M.","last_name":"Evans","full_name":"Evans, M."},{"first_name":"D.","last_name":"Mogilevtsev","full_name":"Mogilevtsev, D."},{"first_name":"L. L.","full_name":"Sánchez-Soto, L. L.","last_name":"Sánchez-Soto"}],"date_created":"2025-12-18T16:12:21Z","title":"Relative-belief inference in quantum information theory","doi":"10.1103/physreva.110.012231","publication":"Physical Review A","type":"journal_article","abstract":[{"text":"We introduce the framework of Bayesian relative belief that directly evaluates whether or not the experimental data at hand support a given hypothesis regarding a quantum system by directly comparing the prior and posterior probabilities for the hypothesis. In model-dimension certification tasks, we show that the relative-belief procedure typically chooses Hilbert spaces that are never smaller in dimension than those selected from optimizing a broad class of information criteria, including Akaike's criterion. As a concrete and focused exposition of this powerful evidence-based technique, we apply the relative-belief procedure to an important application: . In particular, just by comparing prior and posterior probabilities based on data, we demonstrate its capability of tracking multiphoton emissions using (realistically lossy) single-photon detectors in order to assess the actual quality of photon sources without making assumptions, thereby reliably safeguarding source integrity for general quantum-information and communication tasks with Bayesian reasoning. Finally, we discuss how relative belief can be exploited to carry out parametric model certification and estimate the total dimension of the quantum state for the combined (measured) physical and interacting external systems described by the Tavis-Cummings model.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n ","lang":"eng"}],"status":"public","_id":"63219","department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","article_number":"012231","language":[{"iso":"eng"}]},{"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"3","year":"2024","intvolume":" 33","citation":{"apa":"Bhattacharjee, A., Folge, P. F., Serino, L. M., Řeháček, J., Hradil, Z., Silberhorn, C., & Brecht, B. (2024). Pulse characterization at the single-photon level through chronocyclic Q-function measurements. Optics Express, 33(3), Article 5551. https://doi.org/10.1364/oe.540125","bibtex":"@article{Bhattacharjee_Folge_Serino_Řeháček_Hradil_Silberhorn_Brecht_2024, title={Pulse characterization at the single-photon level through chronocyclic Q-function measurements}, volume={33}, DOI={10.1364/oe.540125}, number={35551}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Bhattacharjee, Abhinandan and Folge, Patrick Fabian and Serino, Laura Maria and Řeháček, Jaroslav and Hradil, Zdeněk and Silberhorn, Christine and Brecht, Benjamin}, year={2024} }","mla":"Bhattacharjee, Abhinandan, et al. “Pulse Characterization at the Single-Photon Level through Chronocyclic Q-Function Measurements.” Optics Express, vol. 33, no. 3, 5551, Optica Publishing Group, 2024, doi:10.1364/oe.540125.","short":"A. Bhattacharjee, P.F. Folge, L.M. Serino, J. Řeháček, Z. Hradil, C. Silberhorn, B. Brecht, Optics Express 33 (2024).","ama":"Bhattacharjee A, Folge PF, Serino LM, et al. Pulse characterization at the single-photon level through chronocyclic Q-function measurements. Optics Express. 2024;33(3). doi:10.1364/oe.540125","chicago":"Bhattacharjee, Abhinandan, Patrick Fabian Folge, Laura Maria Serino, Jaroslav Řeháček, Zdeněk Hradil, Christine Silberhorn, and Benjamin Brecht. “Pulse Characterization at the Single-Photon Level through Chronocyclic Q-Function Measurements.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.540125.","ieee":"A. Bhattacharjee et al., “Pulse characterization at the single-photon level through chronocyclic Q-function measurements,” Optics Express, vol. 33, no. 3, Art. no. 5551, 2024, doi: 10.1364/oe.540125."},"publisher":"Optica Publishing Group","date_updated":"2025-12-18T16:08:40Z","volume":33,"author":[{"last_name":"Bhattacharjee","id":"95902","full_name":"Bhattacharjee, Abhinandan","first_name":"Abhinandan"},{"first_name":"Patrick Fabian","full_name":"Folge, Patrick Fabian","id":"88605","last_name":"Folge"},{"last_name":"Serino","id":"88242","full_name":"Serino, Laura Maria","first_name":"Laura Maria"},{"last_name":"Řeháček","full_name":"Řeháček, Jaroslav","first_name":"Jaroslav"},{"full_name":"Hradil, Zdeněk","last_name":"Hradil","first_name":"Zdeněk"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"}],"date_created":"2025-12-18T16:08:16Z","title":"Pulse characterization at the single-photon level through chronocyclic Q-function measurements","doi":"10.1364/oe.540125","publication":"Optics Express","type":"journal_article","abstract":[{"lang":"eng","text":"The characterization of the complex spectral amplitude, that is, the spectrum and spectral phase, of single-photon-level light fields is a crucial capability for modern photonic quantum technologies. Since established pulse characterization techniques are not applicable at low intensities, alternative approaches are required. Here, we demonstrate the retrieval of the complex spectral amplitude of single-photon-level light pulses through measuring their chronocyclic Q −function. Our approach draws inspiration from quantum state tomography by exploiting the analogy between quadrature phase space and time-frequency phase space. In the experiment, we perform time-frequency projections with a quantum pulse gate (QPG), which directly yield the chronocyclic Q −function. We evaluate the complex spectral amplitude from the measured chronocyclic Q −function data with maximum likelihood estimation (MLE), which is the established technique for quantum state tomography. The MLE yields not only an unambigious estimate of the complex spectral amplitude of the state under test that does not require any a priori information, but also allows for, in principle, estimating the spectral-temporal coherence properties of the state. Our method accurately recovers features such as jumps in the spectral phase and is resistant against regions with zero spectral intensity, which makes it immediately beneficial for classical pulse characterization problems."}],"status":"public","_id":"63216","department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","article_number":"5551","language":[{"iso":"eng"}]},{"title":"Evidence-Based Certification of Quantum Dimensions","doi":"10.1103/physrevlett.133.050204","publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:13:14Z","author":[{"first_name":"Y. S.","last_name":"Teo","full_name":"Teo, Y. S."},{"first_name":"S. U.","full_name":"Shringarpure, S. U.","last_name":"Shringarpure"},{"full_name":"Jeong, H.","last_name":"Jeong","first_name":"H."},{"full_name":"Prasannan, Nidhin","id":"71403","last_name":"Prasannan","first_name":"Nidhin"},{"full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"},{"full_name":"Evans, M.","last_name":"Evans","first_name":"M."},{"first_name":"D.","full_name":"Mogilevtsev, D.","last_name":"Mogilevtsev"},{"first_name":"L. L.","full_name":"Sánchez-Soto, L. L.","last_name":"Sánchez-Soto"}],"date_created":"2025-12-18T16:13:00Z","volume":133,"year":"2024","citation":{"apa":"Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., & Sánchez-Soto, L. L. (2024). Evidence-Based Certification of Quantum Dimensions. Physical Review Letters, 133(5), Article 050204. https://doi.org/10.1103/physrevlett.133.050204","bibtex":"@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Evidence-Based Certification of Quantum Dimensions}, volume={133}, DOI={10.1103/physrevlett.133.050204}, number={5050204}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Teo, Y. S. and Shringarpure, S. U. and Jeong, H. and Prasannan, Nidhin and Brecht, Benjamin and Silberhorn, Christine and Evans, M. and Mogilevtsev, D. and Sánchez-Soto, L. L.}, year={2024} }","mla":"Teo, Y. S., et al. “Evidence-Based Certification of Quantum Dimensions.” Physical Review Letters, vol. 133, no. 5, 050204, American Physical Society (APS), 2024, doi:10.1103/physrevlett.133.050204.","short":"Y.S. Teo, S.U. Shringarpure, H. Jeong, N. Prasannan, B. Brecht, C. Silberhorn, M. Evans, D. Mogilevtsev, L.L. Sánchez-Soto, Physical Review Letters 133 (2024).","ama":"Teo YS, Shringarpure SU, Jeong H, et al. Evidence-Based Certification of Quantum Dimensions. Physical Review Letters. 2024;133(5). doi:10.1103/physrevlett.133.050204","ieee":"Y. S. Teo et al., “Evidence-Based Certification of Quantum Dimensions,” Physical Review Letters, vol. 133, no. 5, Art. no. 050204, 2024, doi: 10.1103/physrevlett.133.050204.","chicago":"Teo, Y. S., S. U. Shringarpure, H. Jeong, Nidhin Prasannan, Benjamin Brecht, Christine Silberhorn, M. Evans, D. Mogilevtsev, and L. L. Sánchez-Soto. “Evidence-Based Certification of Quantum Dimensions.” Physical Review Letters 133, no. 5 (2024). https://doi.org/10.1103/physrevlett.133.050204."},"intvolume":" 133","publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"issue":"5","article_number":"050204","language":[{"iso":"eng"}],"_id":"63220","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"abstract":[{"lang":"eng","text":"Identifying a reasonably small Hilbert space that completely describes an unknown quantum state is crucial for efficient quantum information processing. We introduce a general dimension-certification protocol for both discrete and continuous variables that is fully evidence based, relying solely on the experimental data collected and no other unjustified assumptions whatsoever. Using the Bayesian concept of relative belief, we take the effective dimension of the state as the smallest one such that the posterior probability is larger than the prior, as dictated by the data. The posterior probabilities associated with the relative-belief ratios measure the strength of the evidence provide by these ratios so that we can assess whether there is weak or strong evidence in favor or against a particular dimension. Using experimental data from spectral-temporal and polarimetry measurements, we demonstrate how to correctly assign Bayesian plausible error bars for the obtained effective dimensions. This makes relative belief a conservative and easy-to-use model-selection method for any experiment.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n "}],"status":"public","type":"journal_article","publication":"Physical Review Letters"},{"issue":"2","year":"2024","date_created":"2024-05-14T12:40:48Z","publisher":"American Physical Society (APS)","title":"Realization of high-fidelity unitary operations on up to 64 frequency bins","publication":"Physical Review Research","abstract":[{"text":"The ability to apply user-chosen large-scale unitary operations with high fidelity to a quantum state is key to realizing future photonic quantum technologies. Here, we realize the implementation of programmable unitary operations on up to 64 frequency-bin modes. To benchmark the performance of our system, we probe different quantum walk unitary operations, in particular, Grover walks on four-dimensional hypercubes with similarities exceeding 95% and quantum walks with 400 steps on circles and finite lines with similarities of 98%. Our results open a path toward implementing high-quality unitary operations, which can form the basis for applications in complex tasks, such as Gaussian boson sampling.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n ","lang":"eng"}],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"citation":{"ama":"De S, Ansari V, Sperling J, Barkhofen S, Brecht B, Silberhorn C. Realization of high-fidelity unitary operations on up to 64 frequency bins. Physical Review Research. 2024;6(2). doi:10.1103/physrevresearch.6.l022040","chicago":"De, Syamsundar, Vahid Ansari, Jan Sperling, Sonja Barkhofen, Benjamin Brecht, and Christine Silberhorn. “Realization of High-Fidelity Unitary Operations on up to 64 Frequency Bins.” Physical Review Research 6, no. 2 (2024). https://doi.org/10.1103/physrevresearch.6.l022040.","ieee":"S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, and C. Silberhorn, “Realization of high-fidelity unitary operations on up to 64 frequency bins,” Physical Review Research, vol. 6, no. 2, Art. no. L022040, 2024, doi: 10.1103/physrevresearch.6.l022040.","apa":"De, S., Ansari, V., Sperling, J., Barkhofen, S., Brecht, B., & Silberhorn, C. (2024). Realization of high-fidelity unitary operations on up to 64 frequency bins. Physical Review Research, 6(2), Article L022040. https://doi.org/10.1103/physrevresearch.6.l022040","short":"S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, C. Silberhorn, Physical Review Research 6 (2024).","mla":"De, Syamsundar, et al. “Realization of High-Fidelity Unitary Operations on up to 64 Frequency Bins.” Physical Review Research, vol. 6, no. 2, L022040, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.l022040.","bibtex":"@article{De_Ansari_Sperling_Barkhofen_Brecht_Silberhorn_2024, title={Realization of high-fidelity unitary operations on up to 64 frequency bins}, volume={6}, DOI={10.1103/physrevresearch.6.l022040}, number={2L022040}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={De, Syamsundar and Ansari, Vahid and Sperling, Jan and Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }"},"intvolume":" 6","author":[{"last_name":"De","full_name":"De, Syamsundar","first_name":"Syamsundar"},{"full_name":"Ansari, Vahid","last_name":"Ansari","first_name":"Vahid"},{"first_name":"Jan","full_name":"Sperling, Jan","id":"75127","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja","first_name":"Sonja"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"volume":6,"date_updated":"2025-12-18T16:14:39Z","doi":"10.1103/physrevresearch.6.l022040","type":"journal_article","status":"public","user_id":"27150","department":[{"_id":"623"},{"_id":"288"},{"_id":"15"}],"project":[{"_id":"216","name":"QuPoPCoRN: QUPOPCORN: Quantum Particles on Programmable Complex Reconfigurable Networks"}],"_id":"54288","article_number":"L022040"},{"publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:10:55Z","date_created":"2025-12-18T16:10:37Z","author":[{"first_name":"Patrick Fabian","last_name":"Folge","full_name":"Folge, Patrick Fabian","id":"88605"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","full_name":"Brecht, Benjamin","id":"27150","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"volume":5,"title":"A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates","doi":"10.1103/prxquantum.5.040329","publication_status":"published","publication_identifier":{"issn":["2691-3399"]},"issue":"4","year":"2024","citation":{"apa":"Folge, P. F., Stefszky, M., Brecht, B., & Silberhorn, C. (2024). A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. PRX Quantum, 5(4), Article 040329. https://doi.org/10.1103/prxquantum.5.040329","mla":"Folge, Patrick Fabian, et al. “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates.” PRX Quantum, vol. 5, no. 4, 040329, American Physical Society (APS), 2024, doi:10.1103/prxquantum.5.040329.","short":"P.F. Folge, M. Stefszky, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024).","bibtex":"@article{Folge_Stefszky_Brecht_Silberhorn_2024, title={A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates}, volume={5}, DOI={10.1103/prxquantum.5.040329}, number={4040329}, journal={PRX Quantum}, publisher={American Physical Society (APS)}, author={Folge, Patrick Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","ama":"Folge PF, Stefszky M, Brecht B, Silberhorn C. A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. PRX Quantum. 2024;5(4). doi:10.1103/prxquantum.5.040329","chicago":"Folge, Patrick Fabian, Michael Stefszky, Benjamin Brecht, and Christine Silberhorn. “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates.” PRX Quantum 5, no. 4 (2024). https://doi.org/10.1103/prxquantum.5.040329.","ieee":"P. F. Folge, M. Stefszky, B. Brecht, and C. Silberhorn, “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates,” PRX Quantum, vol. 5, no. 4, Art. no. 040329, 2024, doi: 10.1103/prxquantum.5.040329."},"intvolume":" 5","_id":"63218","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"article_number":"040329","language":[{"iso":"eng"}],"type":"journal_article","publication":"PRX Quantum","abstract":[{"text":"Linear optical quantum networks, consisting of a quantum input state and a multiport interferometer, are an important building block for many quantum technological concepts, e.g., Gaussian boson sampling. Here, we propose the implementation of such networks based on frequency conversion by utilizing a so-called multioutput quantum pulse gate (MQPG). This approach allows the resource-efficient and therefore scalable implementation of frequency-bin-based, fully programmable interferometers in a single spatial and polarization mode. Quantum input states for this network can be provided by utilizing the strong frequency entanglement of a type-0 parametric down-conversion (PDC) source. Here, we develop a theoretical framework to describe linear networks based on an MQPG and PDC and utilize it to investigate the limits and scalabilty of our approach.\r\n \r\n \r\n \r\n \r\n Published by the American Physical Society\r\n 2024\r\n \r\n \r\n ","lang":"eng"}],"status":"public"}]