[{"type":"conference","publication":"Quantum Computing, Communication, and Simulation IV","status":"public","editor":[{"first_name":"Philip R.","last_name":"Hemmer","full_name":"Hemmer, Philip R."},{"full_name":"Migdall, Alan L.","last_name":"Migdall","first_name":"Alan L."}],"user_id":"48188","department":[{"_id":"623"}],"_id":"62852","language":[{"iso":"eng"}],"publication_status":"published","citation":{"ama":"Gyger S, Tao M, Colangelo M, et al. Integrating superconducting single-photon detectors into active photonic circuits. In: Hemmer PR, Migdall AL, eds. <i>Quantum Computing, Communication, and Simulation IV</i>. SPIE; 2024. doi:<a href=\"https://doi.org/10.1117/12.3009736\">10.1117/12.3009736</a>","ieee":"S. Gyger <i>et al.</i>, “Integrating superconducting single-photon detectors into active photonic circuits,” in <i>Quantum Computing, Communication, and Simulation IV</i>, 2024, doi: <a href=\"https://doi.org/10.1117/12.3009736\">10.1117/12.3009736</a>.","chicago":"Gyger, Samuel, Max Tao, Marco Colangelo, Ian Christen, Hugo Larocque, Julian Zichi, Lucas Schweickert, et al. “Integrating Superconducting Single-Photon Detectors into Active Photonic Circuits.” In <i>Quantum Computing, Communication, and Simulation IV</i>, edited by Philip R. Hemmer and Alan L. Migdall. SPIE, 2024. <a href=\"https://doi.org/10.1117/12.3009736\">https://doi.org/10.1117/12.3009736</a>.","bibtex":"@inproceedings{Gyger_Tao_Colangelo_Christen_Larocque_Zichi_Schweickert_Elshaari_Steinhauer_Covre da Silva_et al._2024, title={Integrating superconducting single-photon detectors into active photonic circuits}, DOI={<a href=\"https://doi.org/10.1117/12.3009736\">10.1117/12.3009736</a>}, booktitle={Quantum Computing, Communication, and Simulation IV}, publisher={SPIE}, author={Gyger, Samuel and Tao, Max and Colangelo, Marco and Christen, Ian and Larocque, Hugo and Zichi, Julian and Schweickert, Lucas and Elshaari, Ali and Steinhauer, Stephan and Covre da Silva, Saimon and et al.}, editor={Hemmer, Philip R. and Migdall, Alan L.}, year={2024} }","mla":"Gyger, Samuel, et al. “Integrating Superconducting Single-Photon Detectors into Active Photonic Circuits.” <i>Quantum Computing, Communication, and Simulation IV</i>, edited by Philip R. Hemmer and Alan L. Migdall, SPIE, 2024, doi:<a href=\"https://doi.org/10.1117/12.3009736\">10.1117/12.3009736</a>.","short":"S. Gyger, M. Tao, M. Colangelo, I. Christen, H. Larocque, J. Zichi, L. Schweickert, A. Elshaari, S. Steinhauer, S. Covre da Silva, A. Rastelli, H. Sattari, G. Chong, Y. Pétremand, I. Prieto, Y. Yu, A. Ghadimi, D. Englund, K. Jöns, V. Zwiller, C. Errando Herranz, in: P.R. Hemmer, A.L. Migdall (Eds.), Quantum Computing, Communication, and Simulation IV, SPIE, 2024.","apa":"Gyger, S., Tao, M., Colangelo, M., Christen, I., Larocque, H., Zichi, J., Schweickert, L., Elshaari, A., Steinhauer, S., Covre da Silva, S., Rastelli, A., Sattari, H., Chong, G., Pétremand, Y., Prieto, I., Yu, Y., Ghadimi, A., Englund, D., Jöns, K., … Errando Herranz, C. (2024). Integrating superconducting single-photon detectors into active photonic circuits. In P. R. Hemmer &#38; A. L. Migdall (Eds.), <i>Quantum Computing, Communication, and Simulation IV</i>. SPIE. <a href=\"https://doi.org/10.1117/12.3009736\">https://doi.org/10.1117/12.3009736</a>"},"year":"2024","author":[{"full_name":"Gyger, Samuel","last_name":"Gyger","first_name":"Samuel"},{"full_name":"Tao, Max","last_name":"Tao","first_name":"Max"},{"first_name":"Marco","full_name":"Colangelo, Marco","last_name":"Colangelo"},{"last_name":"Christen","full_name":"Christen, Ian","first_name":"Ian"},{"full_name":"Larocque, Hugo","last_name":"Larocque","first_name":"Hugo"},{"first_name":"Julian","full_name":"Zichi, Julian","last_name":"Zichi"},{"last_name":"Schweickert","full_name":"Schweickert, Lucas","first_name":"Lucas"},{"first_name":"Ali","last_name":"Elshaari","full_name":"Elshaari, Ali"},{"first_name":"Stephan","full_name":"Steinhauer, Stephan","last_name":"Steinhauer"},{"last_name":"Covre da Silva","full_name":"Covre da Silva, Saimon","first_name":"Saimon"},{"last_name":"Rastelli","full_name":"Rastelli, Armando","first_name":"Armando"},{"full_name":"Sattari, Hamed","last_name":"Sattari","first_name":"Hamed"},{"first_name":"Gregory","full_name":"Chong, Gregory","last_name":"Chong"},{"full_name":"Pétremand, Yves","last_name":"Pétremand","first_name":"Yves"},{"first_name":"Ivan","last_name":"Prieto","full_name":"Prieto, Ivan"},{"first_name":"Yang","full_name":"Yu, Yang","last_name":"Yu"},{"full_name":"Ghadimi, Amir","last_name":"Ghadimi","first_name":"Amir"},{"full_name":"Englund, Dirk","last_name":"Englund","first_name":"Dirk"},{"last_name":"Jöns","full_name":"Jöns, Klaus","id":"85353","first_name":"Klaus"},{"full_name":"Zwiller, Val","last_name":"Zwiller","first_name":"Val"},{"last_name":"Errando Herranz","full_name":"Errando Herranz, Carlos","first_name":"Carlos"}],"date_created":"2025-12-04T12:07:37Z","publisher":"SPIE","date_updated":"2025-12-04T12:24:04Z","doi":"10.1117/12.3009736","title":"Integrating superconducting single-photon detectors into active photonic circuits"},{"_id":"62850","user_id":"48188","department":[{"_id":"623"}],"language":[{"iso":"eng"}],"type":"conference","publication":"Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII","editor":[{"last_name":"Keller","full_name":"Keller, Ursula","first_name":"Ursula"}],"status":"public","date_updated":"2025-12-04T12:24:00Z","publisher":"SPIE","author":[{"last_name":"Mikitta","full_name":"Mikitta, Telsche","first_name":"Telsche"},{"last_name":"Cutuk","full_name":"Cutuk, Ana","first_name":"Ana"},{"full_name":"Jetter, Michael","last_name":"Jetter","first_name":"Michael"},{"first_name":"Peter","last_name":"Michler","full_name":"Michler, Peter"},{"last_name":"Jöns","id":"85353","full_name":"Jöns, Klaus","first_name":"Klaus"},{"first_name":"Hermann","full_name":"Kahle, Hermann","last_name":"Kahle"}],"date_created":"2025-12-04T12:06:23Z","title":"Membrane external-cavity surface-emitting lasers (MECSELs) optimized for double-side-pumping: a first fundamental single-side pumping characterization","doi":"10.1117/12.3002481","publication_status":"published","year":"2024","citation":{"apa":"Mikitta, T., Cutuk, A., Jetter, M., Michler, P., Jöns, K., &#38; Kahle, H. (2024). Membrane external-cavity surface-emitting lasers (MECSELs) optimized for double-side-pumping: a first fundamental single-side pumping characterization. In U. Keller (Ed.), <i>Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII</i>. SPIE. <a href=\"https://doi.org/10.1117/12.3002481\">https://doi.org/10.1117/12.3002481</a>","short":"T. Mikitta, A. Cutuk, M. Jetter, P. Michler, K. Jöns, H. Kahle, in: U. Keller (Ed.), Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII, SPIE, 2024.","bibtex":"@inproceedings{Mikitta_Cutuk_Jetter_Michler_Jöns_Kahle_2024, title={Membrane external-cavity surface-emitting lasers (MECSELs) optimized for double-side-pumping: a first fundamental single-side pumping characterization}, DOI={<a href=\"https://doi.org/10.1117/12.3002481\">10.1117/12.3002481</a>}, booktitle={Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII}, publisher={SPIE}, author={Mikitta, Telsche and Cutuk, Ana and Jetter, Michael and Michler, Peter and Jöns, Klaus and Kahle, Hermann}, editor={Keller, Ursula}, year={2024} }","mla":"Mikitta, Telsche, et al. “Membrane External-Cavity Surface-Emitting Lasers (MECSELs) Optimized for Double-Side-Pumping: A First Fundamental Single-Side Pumping Characterization.” <i>Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII</i>, edited by Ursula Keller, SPIE, 2024, doi:<a href=\"https://doi.org/10.1117/12.3002481\">10.1117/12.3002481</a>.","chicago":"Mikitta, Telsche, Ana Cutuk, Michael Jetter, Peter Michler, Klaus Jöns, and Hermann Kahle. “Membrane External-Cavity Surface-Emitting Lasers (MECSELs) Optimized for Double-Side-Pumping: A First Fundamental Single-Side Pumping Characterization.” In <i>Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII</i>, edited by Ursula Keller. SPIE, 2024. <a href=\"https://doi.org/10.1117/12.3002481\">https://doi.org/10.1117/12.3002481</a>.","ieee":"T. Mikitta, A. Cutuk, M. Jetter, P. Michler, K. Jöns, and H. Kahle, “Membrane external-cavity surface-emitting lasers (MECSELs) optimized for double-side-pumping: a first fundamental single-side pumping characterization,” in <i>Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII</i>, 2024, doi: <a href=\"https://doi.org/10.1117/12.3002481\">10.1117/12.3002481</a>.","ama":"Mikitta T, Cutuk A, Jetter M, Michler P, Jöns K, Kahle H. Membrane external-cavity surface-emitting lasers (MECSELs) optimized for double-side-pumping: a first fundamental single-side pumping characterization. In: Keller U, ed. <i>Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII</i>. SPIE; 2024. doi:<a href=\"https://doi.org/10.1117/12.3002481\">10.1117/12.3002481</a>"}},{"volume":6,"author":[{"first_name":"Christian","id":"43994","full_name":"Arends, Christian","last_name":"Arends"},{"first_name":"Lasse Lennart","last_name":"Wolf","orcid":"0000-0001-8893-2045","full_name":"Wolf, Lasse Lennart","id":"45027"},{"full_name":"Meinecke, Jasmin","last_name":"Meinecke","first_name":"Jasmin"},{"id":"48188","full_name":"Barkhofen, Sonja","last_name":"Barkhofen","first_name":"Sonja"},{"id":"49178","full_name":"Weich, Tobias","last_name":"Weich","orcid":"0000-0002-9648-6919","first_name":"Tobias"},{"last_name":"Bartley","full_name":"Bartley, Tim","id":"49683","first_name":"Tim"}],"date_created":"2024-03-26T08:52:05Z","date_updated":"2025-12-04T13:38:49Z","publisher":"American Physical Society (APS)","doi":"10.1103/physrevresearch.6.l012043","title":"Decomposing large unitaries into multimode devices of arbitrary size","issue":"1","publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","intvolume":"         6","citation":{"ama":"Arends C, Wolf LL, Meinecke J, Barkhofen S, Weich T, Bartley T. Decomposing large unitaries into multimode devices of arbitrary size. <i>Physical Review Research</i>. 2024;6(1). doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">10.1103/physrevresearch.6.l012043</a>","ieee":"C. Arends, L. L. Wolf, J. Meinecke, S. Barkhofen, T. Weich, and T. Bartley, “Decomposing large unitaries into multimode devices of arbitrary size,” <i>Physical Review Research</i>, vol. 6, no. 1, Art. no. L012043, 2024, doi: <a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">10.1103/physrevresearch.6.l012043</a>.","chicago":"Arends, Christian, Lasse Lennart Wolf, Jasmin Meinecke, Sonja Barkhofen, Tobias Weich, and Tim Bartley. “Decomposing Large Unitaries into Multimode Devices of Arbitrary Size.” <i>Physical Review Research</i> 6, no. 1 (2024). <a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">https://doi.org/10.1103/physrevresearch.6.l012043</a>.","mla":"Arends, Christian, et al. “Decomposing Large Unitaries into Multimode Devices of Arbitrary Size.” <i>Physical Review Research</i>, vol. 6, no. 1, L012043, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">10.1103/physrevresearch.6.l012043</a>.","short":"C. Arends, L.L. Wolf, J. Meinecke, S. Barkhofen, T. Weich, T. Bartley, Physical Review Research 6 (2024).","bibtex":"@article{Arends_Wolf_Meinecke_Barkhofen_Weich_Bartley_2024, title={Decomposing large unitaries into multimode devices of arbitrary size}, volume={6}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">10.1103/physrevresearch.6.l012043</a>}, number={1L012043}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Arends, Christian and Wolf, Lasse Lennart and Meinecke, Jasmin and Barkhofen, Sonja and Weich, Tobias and Bartley, Tim}, year={2024} }","apa":"Arends, C., Wolf, L. L., Meinecke, J., Barkhofen, S., Weich, T., &#38; Bartley, T. (2024). Decomposing large unitaries into multimode devices of arbitrary size. <i>Physical Review Research</i>, <i>6</i>(1), Article L012043. <a href=\"https://doi.org/10.1103/physrevresearch.6.l012043\">https://doi.org/10.1103/physrevresearch.6.l012043</a>"},"year":"2024","department":[{"_id":"623"},{"_id":"15"}],"user_id":"48188","_id":"52876","language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy"],"article_number":"L012043","publication":"Physical Review Research","type":"journal_article","status":"public"},{"title":"Time-bin entanglement in the deterministic generation of linear photonic cluster states","doi":"10.1063/5.0214197","date_updated":"2025-12-05T13:55:00Z","publisher":"AIP Publishing","author":[{"first_name":"David","full_name":"Bauch, David","last_name":"Bauch"},{"first_name":"Nikolas","last_name":"Köcher","full_name":"Köcher, Nikolas","id":"79191"},{"id":"90283","full_name":"Heinisch, Nils","last_name":"Heinisch","orcid":"0009-0006-0984-2097","first_name":"Nils"},{"orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"date_created":"2025-12-04T12:35:53Z","volume":1,"year":"2024","citation":{"ama":"Bauch D, Köcher N, Heinisch N, Schumacher S. Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>. 2024;1(3). doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>","ieee":"D. Bauch, N. Köcher, N. Heinisch, and S. Schumacher, “Time-bin entanglement in the deterministic generation of linear photonic cluster states,” <i>APL Quantum</i>, vol. 1, no. 3, Art. no. 036110, 2024, doi: <a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>.","chicago":"Bauch, David, Nikolas Köcher, Nils Heinisch, and Stefan Schumacher. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i> 1, no. 3 (2024). <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>.","apa":"Bauch, D., Köcher, N., Heinisch, N., &#38; Schumacher, S. (2024). Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>, <i>1</i>(3), Article 036110. <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>","short":"D. Bauch, N. Köcher, N. Heinisch, S. Schumacher, APL Quantum 1 (2024).","bibtex":"@article{Bauch_Köcher_Heinisch_Schumacher_2024, title={Time-bin entanglement in the deterministic generation of linear photonic cluster states}, volume={1}, DOI={<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>}, number={3036110}, journal={APL Quantum}, publisher={AIP Publishing}, author={Bauch, David and Köcher, Nikolas and Heinisch, Nils and Schumacher, Stefan}, year={2024} }","mla":"Bauch, David, et al. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i>, vol. 1, no. 3, 036110, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>."},"intvolume":"         1","publication_status":"published","publication_identifier":{"issn":["2835-0103"]},"issue":"3","article_number":"036110","language":[{"iso":"eng"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"173","name":"TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"56","name":"TRR 142 - Project Area C"}],"_id":"62868","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"27"},{"_id":"429"},{"_id":"230"},{"_id":"623"}],"abstract":[{"text":"<jats:p>We theoretically investigate strategies for the deterministic creation of trains of time-bin entangled photons using an individual quantum emitter described by a Λ-type electronic system. We explicitly demonstrate the theoretical generation of linear cluster states with substantial numbers of entangled photonic qubits in full microscopic numerical simulations. The underlying scheme is based on the manipulation of ground state coherences through precise optical driving. One important finding is that the most easily accessible quality metrics, the achievable rotation fidelities, fall short in assessing the actual quantum correlations of the emitted photons in the face of losses. To address this, we explicitly calculate stabilizer generator expectation values as a superior gauge for the quantum properties of the generated many-photon state. With widespread applicability in other emitter and excitation–emission schemes also, our work lays the conceptual foundations for an in-depth practical analysis of time-bin entanglement based on full numerical simulations with predictive capabilities for realistic systems and setups, including losses and imperfections. The specific results shown in the present work illustrate that with controlled minimization of losses and realistic system parameters for quantum-dot type systems, useful linear cluster states of significant lengths can be generated in the calculations, discussing the possibility of scalability for quantum information processing endeavors.</jats:p>","lang":"eng"}],"status":"public","type":"journal_article","publication":"APL Quantum"},{"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>Developing coherent excitation methods for quantum emitters ensuring high brightness, optimal single‐photon purity and indistinguishability of the emitted photons has been a key challenge in the past years. While various methods have been proposed and explored, they all have specific advantages and disadvantages. This study investigates the dynamics of the recent swing‐up scheme as an excitation method for a two‐level system and its performance in single‐photon generation. By applying two far red‐detuned laser pulses, the two‐level system can be prepared in the excited state with near‐unity fidelity. The successful operation and coherent character of this technique are demonstrated using a semiconductor quantum dot (QD). Moreover, the multi‐dimensional parameter space of the two laser pulses is explored to analyze its impact on excitation fidelity. Finally, the performance of the scheme as an excitation method for generating high‐quality single photons is analyzed. The swing‐up scheme itself proves effective, exhibiting nearly perfect single‐photon purity, while the observed indistinguishability in the studied sample is limited by the influence of the inevitable high excitation powers on the semiconductor environment of the quantum dot.</jats:p>"}],"publication":"Advanced Quantum Technologies","title":"Coherent Swing‐Up Excitation for Semiconductor Quantum Dots","publisher":"Wiley","date_created":"2025-12-04T12:08:46Z","year":"2024","issue":"4","article_number":"2300359","_id":"62853","department":[{"_id":"623"},{"_id":"15"},{"_id":"429"},{"_id":"642"}],"user_id":"48188","status":"public","type":"journal_article","doi":"10.1002/qute.202300359","date_updated":"2025-12-11T13:00:06Z","volume":7,"author":[{"last_name":"Boos","full_name":"Boos, Katarina","first_name":"Katarina"},{"first_name":"Friedrich","last_name":"Sbresny","full_name":"Sbresny, Friedrich"},{"full_name":"Kim, Sang Kyu","last_name":"Kim","first_name":"Sang Kyu"},{"first_name":"Malte","last_name":"Kremser","full_name":"Kremser, Malte"},{"full_name":"Riedl, Hubert","last_name":"Riedl","first_name":"Hubert"},{"last_name":"Bopp","full_name":"Bopp, Frederik W.","first_name":"Frederik W."},{"last_name":"Rauhaus","full_name":"Rauhaus, William","first_name":"William"},{"first_name":"Bianca","full_name":"Scaparra, Bianca","last_name":"Scaparra"},{"first_name":"Klaus","full_name":"Jöns, Klaus","id":"85353","last_name":"Jöns"},{"last_name":"Finley","full_name":"Finley, Jonathan J.","first_name":"Jonathan J."},{"last_name":"Müller","full_name":"Müller, Kai","first_name":"Kai"},{"last_name":"Hanschke","full_name":"Hanschke, Lukas","first_name":"Lukas"}],"intvolume":"         7","citation":{"short":"K. Boos, F. Sbresny, S.K. Kim, M. Kremser, H. Riedl, F.W. Bopp, W. Rauhaus, B. Scaparra, K. Jöns, J.J. Finley, K. Müller, L. Hanschke, Advanced Quantum Technologies 7 (2024).","bibtex":"@article{Boos_Sbresny_Kim_Kremser_Riedl_Bopp_Rauhaus_Scaparra_Jöns_Finley_et al._2024, title={Coherent Swing‐Up Excitation for Semiconductor Quantum Dots}, volume={7}, DOI={<a href=\"https://doi.org/10.1002/qute.202300359\">10.1002/qute.202300359</a>}, number={42300359}, journal={Advanced Quantum Technologies}, publisher={Wiley}, author={Boos, Katarina and Sbresny, Friedrich and Kim, Sang Kyu and Kremser, Malte and Riedl, Hubert and Bopp, Frederik W. and Rauhaus, William and Scaparra, Bianca and Jöns, Klaus and Finley, Jonathan J. and et al.}, year={2024} }","mla":"Boos, Katarina, et al. “Coherent Swing‐Up Excitation for Semiconductor Quantum Dots.” <i>Advanced Quantum Technologies</i>, vol. 7, no. 4, 2300359, Wiley, 2024, doi:<a href=\"https://doi.org/10.1002/qute.202300359\">10.1002/qute.202300359</a>.","apa":"Boos, K., Sbresny, F., Kim, S. K., Kremser, M., Riedl, H., Bopp, F. W., Rauhaus, W., Scaparra, B., Jöns, K., Finley, J. J., Müller, K., &#38; Hanschke, L. (2024). Coherent Swing‐Up Excitation for Semiconductor Quantum Dots. <i>Advanced Quantum Technologies</i>, <i>7</i>(4), Article 2300359. <a href=\"https://doi.org/10.1002/qute.202300359\">https://doi.org/10.1002/qute.202300359</a>","ieee":"K. Boos <i>et al.</i>, “Coherent Swing‐Up Excitation for Semiconductor Quantum Dots,” <i>Advanced Quantum Technologies</i>, vol. 7, no. 4, Art. no. 2300359, 2024, doi: <a href=\"https://doi.org/10.1002/qute.202300359\">10.1002/qute.202300359</a>.","chicago":"Boos, Katarina, Friedrich Sbresny, Sang Kyu Kim, Malte Kremser, Hubert Riedl, Frederik W. Bopp, William Rauhaus, et al. “Coherent Swing‐Up Excitation for Semiconductor Quantum Dots.” <i>Advanced Quantum Technologies</i> 7, no. 4 (2024). <a href=\"https://doi.org/10.1002/qute.202300359\">https://doi.org/10.1002/qute.202300359</a>.","ama":"Boos K, Sbresny F, Kim SK, et al. Coherent Swing‐Up Excitation for Semiconductor Quantum Dots. <i>Advanced Quantum Technologies</i>. 2024;7(4). doi:<a href=\"https://doi.org/10.1002/qute.202300359\">10.1002/qute.202300359</a>"},"publication_identifier":{"issn":["2511-9044","2511-9044"]},"publication_status":"published"},{"date_updated":"2025-12-11T12:54:41Z","date_created":"2025-12-04T12:16:58Z","author":[{"last_name":"Hanschke","full_name":"Hanschke, L.","first_name":"L."},{"first_name":"T. K.","last_name":"Bracht","full_name":"Bracht, T. K."},{"first_name":"E.","last_name":"Schöll","full_name":"Schöll, E."},{"first_name":"David","last_name":"Bauch","full_name":"Bauch, David","id":"44172"},{"full_name":"Berger, Eva","last_name":"Berger","first_name":"Eva"},{"last_name":"Kallert","full_name":"Kallert, Patricia","first_name":"Patricia"},{"full_name":"Peter, M.","last_name":"Peter","first_name":"M."},{"last_name":"Garcia","full_name":"Garcia, A. J.","first_name":"A. J."},{"last_name":"Silva","full_name":"Silva, S. F. Covre da","first_name":"S. F. Covre da"},{"last_name":"Manna","full_name":"Manna, S.","first_name":"S."},{"full_name":"Rastelli, A.","last_name":"Rastelli","first_name":"A."},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"},{"last_name":"Reiter","full_name":"Reiter, D. E.","first_name":"D. E."},{"full_name":"Jöns, Klaus","id":"85353","last_name":"Jöns","first_name":"Klaus"}],"title":"Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots","year":"2024","citation":{"apa":"Hanschke, L., Bracht, T. K., Schöll, E., Bauch, D., Berger, E., Kallert, P., Peter, M., Garcia, A. J., Silva, S. F. C. da, Manna, S., Rastelli, A., Schumacher, S., Reiter, D. E., &#38; Jöns, K. (2024). Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots. In <i>arXiv:2409.19167</i>.","short":"L. Hanschke, T.K. Bracht, E. Schöll, D. Bauch, E. Berger, P. Kallert, M. Peter, A.J. Garcia, S.F.C. da Silva, S. Manna, A. Rastelli, S. Schumacher, D.E. Reiter, K. Jöns, ArXiv:2409.19167 (2024).","mla":"Hanschke, L., et al. “Experimental Measurement of the Reappearance of Rabi Rotations in Semiconductor Quantum Dots.” <i>ArXiv:2409.19167</i>, 2024.","bibtex":"@article{Hanschke_Bracht_Schöll_Bauch_Berger_Kallert_Peter_Garcia_Silva_Manna_et al._2024, title={Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots}, journal={arXiv:2409.19167}, author={Hanschke, L. and Bracht, T. K. and Schöll, E. and Bauch, David and Berger, Eva and Kallert, Patricia and Peter, M. and Garcia, A. J. and Silva, S. F. Covre da and Manna, S. and et al.}, year={2024} }","ama":"Hanschke L, Bracht TK, Schöll E, et al. Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots. <i>arXiv:240919167</i>. Published online 2024.","chicago":"Hanschke, L., T. K. Bracht, E. Schöll, David Bauch, Eva Berger, Patricia Kallert, M. Peter, et al. “Experimental Measurement of the Reappearance of Rabi Rotations in Semiconductor Quantum Dots.” <i>ArXiv:2409.19167</i>, 2024.","ieee":"L. Hanschke <i>et al.</i>, “Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots,” <i>arXiv:2409.19167</i>. 2024."},"external_id":{"arxiv":["2409.19167"]},"_id":"62858","department":[{"_id":"623"},{"_id":"15"},{"_id":"429"},{"_id":"642"}],"user_id":"48188","language":[{"iso":"eng"}],"publication":"arXiv:2409.19167","type":"preprint","abstract":[{"lang":"eng","text":"Phonons in solid-state quantum emitters play a crucial role in their performance as photon sources in quantum technology. For resonant driving, phonons dampen the Rabi oscillations resulting in reduced preparation fidelities. The phonon spectral density, which quantifies the strength of the carrier-phonon interaction, is non-monotonous as a function of energy. As one of the most prominent consequences, this leads to the reappearance of Rabi rotations for increasing pulse power, which was theoretically predicted in Phys. Rev. Lett. 98, 227403 (2007). In this paper we present the experimental demonstration of the reappearance of Rabi rotations."}],"status":"public"},{"_id":"62856","date_updated":"2025-12-11T12:58:57Z","department":[{"_id":"623"},{"_id":"15"},{"_id":"429"},{"_id":"642"}],"user_id":"48188","date_created":"2025-12-04T12:13:39Z","author":[{"full_name":"Jöns, Klaus","id":"85353","last_name":"Jöns","first_name":"Klaus"}],"title":"Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities","language":[{"iso":"eng"}],"type":"preprint","abstract":[{"text":"On-chip emitters that can generate single and entangled photons are essential building blocks for developing photonic quantum information processing technologies in a scalable fashion. Semiconductor quantum dots (QDs) are attractive candidates that emit high-quality quantum states of light on demand, however at a rate limited by their spontaneous radiative lifetime. In this study, we utilize the Purcell effect to demonstrate up to a 38-fold enhancement in the emission rate of InAs QDs by coupling them to metal-clad GaAs nanopillars. These cavities, featuring a sub-wavelength mode volume of 4.5x10-4 (λ/n)3 and low quality factor of 62, enable Purcell-enhanced single-photon emission across a large bandwidth of 15 nm. The broadband nature of the cavity eliminates the need for implementing tuning mechanisms typically required to achieve QD-cavity resonance, thus relaxing fabrication constraints. Ultimately, this QD-cavity architecture represents a significant stride towards developing solid-state quantum emitters generating near-ideal single-photon states at GHz-level repetition rates.","lang":"eng"}],"year":"2024","status":"public","citation":{"bibtex":"@article{Jöns_2024, title={Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities}, author={Jöns, Klaus}, year={2024} }","short":"K. Jöns, (2024).","mla":"Jöns, Klaus. <i>Purcell-Enhanced Single-Photon Emission from InAs/GaAs Quantum Dots Coupled to Broadband Cylindrical Nanocavities</i>. 2024.","apa":"Jöns, K. (2024). <i>Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities</i>.","ama":"Jöns K. Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities. Published online 2024.","chicago":"Jöns, Klaus. “Purcell-Enhanced Single-Photon Emission from InAs/GaAs Quantum Dots Coupled to Broadband Cylindrical Nanocavities,” 2024.","ieee":"K. Jöns, “Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities.” 2024."}},{"status":"public","citation":{"chicago":"“High-Throughput Antibody Screening with High-Quality Factor Nanophotonics and Bioprinting,” 2024. <a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">https://doi.org/10.48550/ARXIV.2411.18557</a>.","ieee":"“High-throughput antibody screening with high-quality factor nanophotonics and bioprinting,” 2024, doi: <a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">10.48550/ARXIV.2411.18557</a>.","ama":"High-throughput antibody screening with high-quality factor nanophotonics and bioprinting. Published online 2024. doi:<a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">10.48550/ARXIV.2411.18557</a>","mla":"<i>High-Throughput Antibody Screening with High-Quality Factor Nanophotonics and Bioprinting</i>. 2024, doi:<a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">10.48550/ARXIV.2411.18557</a>.","short":"(2024).","bibtex":"@article{High-throughput antibody screening with high-quality factor nanophotonics and bioprinting_2024, DOI={<a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">10.48550/ARXIV.2411.18557</a>}, year={2024} }","apa":"<i>High-throughput antibody screening with high-quality factor nanophotonics and bioprinting</i>. (2024). <a href=\"https://doi.org/10.48550/ARXIV.2411.18557\">https://doi.org/10.48550/ARXIV.2411.18557</a>"},"year":"2024","type":"journal_article","doi":"10.48550/ARXIV.2411.18557","title":"High-throughput antibody screening with high-quality factor nanophotonics and bioprinting","department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"date_created":"2025-12-11T20:41:16Z","user_id":"112030","_id":"63048","date_updated":"2025-12-11T20:46:34Z"},{"year":"2024","citation":{"ama":"Güsken NA. Schottky-barrier type infrared photodetector . Published online 2024.","ieee":"N. A. Güsken, “Schottky-barrier type infrared photodetector .” 2024.","chicago":"Güsken, Nicholas Alexander. “Schottky-Barrier Type Infrared Photodetector ,” 2024.","short":"N.A. Güsken, (2024).","bibtex":"@article{Güsken_2024, title={Schottky-barrier type infrared photodetector }, author={Güsken, Nicholas Alexander}, year={2024} }","mla":"Güsken, Nicholas Alexander. <i>Schottky-Barrier Type Infrared Photodetector </i>. 2024.","apa":"Güsken, N. A. (2024). <i>Schottky-barrier type infrared photodetector </i>."},"title":"Schottky-barrier type infrared photodetector ","ipn":"12159953","ipc":"US12159953B2","date_updated":"2025-12-11T20:46:41Z","author":[{"id":"112030","full_name":"Güsken, Nicholas Alexander","orcid":"0000-0002-4816-0666","last_name":"Güsken","first_name":"Nicholas Alexander"}],"date_created":"2025-12-11T20:40:43Z","status":"public","type":"patent","_id":"63047","publication_date":"2024/12/3","department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"user_id":"112030"},{"citation":{"ama":"Hoessbacher C, Baeuerle B, Del Medico N, et al. Plasmonic modulators: bringing a new light to silicon. <i>IET Conference Proceedings</i>. 2024;2023(34):1606-1608. doi:<a href=\"https://doi.org/10.1049/icp.2023.2642\">10.1049/icp.2023.2642</a>","ieee":"C. Hoessbacher <i>et al.</i>, “Plasmonic modulators: bringing a new light to silicon,” <i>IET Conference Proceedings</i>, vol. 2023, no. 34, pp. 1606–1608, 2024, doi: <a href=\"https://doi.org/10.1049/icp.2023.2642\">10.1049/icp.2023.2642</a>.","chicago":"Hoessbacher, C., B. Baeuerle, N. Del Medico, E. De Leo, Nicholas Alexander Güsken, W. Heni, A. Langenbach, and V. Tedaldi. “Plasmonic Modulators: Bringing a New Light to Silicon.” <i>IET Conference Proceedings</i> 2023, no. 34 (2024): 1606–8. <a href=\"https://doi.org/10.1049/icp.2023.2642\">https://doi.org/10.1049/icp.2023.2642</a>.","mla":"Hoessbacher, C., et al. “Plasmonic Modulators: Bringing a New Light to Silicon.” <i>IET Conference Proceedings</i>, vol. 2023, no. 34, Institution of Engineering and Technology (IET), 2024, pp. 1606–08, doi:<a href=\"https://doi.org/10.1049/icp.2023.2642\">10.1049/icp.2023.2642</a>.","bibtex":"@article{Hoessbacher_Baeuerle_Del Medico_De Leo_Güsken_Heni_Langenbach_Tedaldi_2024, title={Plasmonic modulators: bringing a new light to silicon}, volume={2023}, DOI={<a href=\"https://doi.org/10.1049/icp.2023.2642\">10.1049/icp.2023.2642</a>}, number={34}, journal={IET Conference Proceedings}, publisher={Institution of Engineering and Technology (IET)}, author={Hoessbacher, C. and Baeuerle, B. and Del Medico, N. and De Leo, E. and Güsken, Nicholas Alexander and Heni, W. and Langenbach, A. and Tedaldi, V.}, year={2024}, pages={1606–1608} }","short":"C. Hoessbacher, B. Baeuerle, N. Del Medico, E. De Leo, N.A. Güsken, W. Heni, A. Langenbach, V. Tedaldi, IET Conference Proceedings 2023 (2024) 1606–1608.","apa":"Hoessbacher, C., Baeuerle, B., Del Medico, N., De Leo, E., Güsken, N. A., Heni, W., Langenbach, A., &#38; Tedaldi, V. (2024). Plasmonic modulators: bringing a new light to silicon. <i>IET Conference Proceedings</i>, <i>2023</i>(34), 1606–1608. <a href=\"https://doi.org/10.1049/icp.2023.2642\">https://doi.org/10.1049/icp.2023.2642</a>"},"page":"1606-1608","intvolume":"      2023","year":"2024","issue":"34","publication_status":"published","publication_identifier":{"issn":["2732-4494"]},"doi":"10.1049/icp.2023.2642","title":"Plasmonic modulators: bringing a new light to silicon","author":[{"last_name":"Hoessbacher","full_name":"Hoessbacher, C.","first_name":"C."},{"first_name":"B.","last_name":"Baeuerle","full_name":"Baeuerle, B."},{"first_name":"N.","full_name":"Del Medico, N.","last_name":"Del Medico"},{"first_name":"E.","full_name":"De Leo, E.","last_name":"De Leo"},{"id":"112030","full_name":"Güsken, Nicholas Alexander","last_name":"Güsken","orcid":"0000-0002-4816-0666","first_name":"Nicholas Alexander"},{"first_name":"W.","last_name":"Heni","full_name":"Heni, W."},{"last_name":"Langenbach","full_name":"Langenbach, A.","first_name":"A."},{"first_name":"V.","full_name":"Tedaldi, V.","last_name":"Tedaldi"}],"date_created":"2025-12-11T20:37:41Z","volume":2023,"publisher":"Institution of Engineering and Technology (IET)","date_updated":"2025-12-15T11:20:43Z","status":"public","type":"journal_article","publication":"IET Conference Proceedings","language":[{"iso":"eng"}],"user_id":"112030","department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"_id":"63044"},{"year":"2024","intvolume":"         3","citation":{"bibtex":"@article{Güsken_Brongersma_2024, title={Electrifying the field of metasurface optics}, volume={3}, DOI={<a href=\"https://doi.org/10.3788/pi.2024.c08\">10.3788/pi.2024.c08</a>}, number={4C08}, journal={Photonics Insights}, publisher={Shanghai Institute of Optics and Fine Mechanics}, author={Güsken, Nicholas Alexander and Brongersma, Mark L.}, year={2024} }","short":"N.A. Güsken, M.L. Brongersma, Photonics Insights 3 (2024).","mla":"Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field of Metasurface Optics.” <i>Photonics Insights</i>, vol. 3, no. 4, C08, Shanghai Institute of Optics and Fine Mechanics, 2024, doi:<a href=\"https://doi.org/10.3788/pi.2024.c08\">10.3788/pi.2024.c08</a>.","apa":"Güsken, N. A., &#38; Brongersma, M. L. (2024). Electrifying the field of metasurface optics. <i>Photonics Insights</i>, <i>3</i>(4), Article C08. <a href=\"https://doi.org/10.3788/pi.2024.c08\">https://doi.org/10.3788/pi.2024.c08</a>","ama":"Güsken NA, Brongersma ML. Electrifying the field of metasurface optics. <i>Photonics Insights</i>. 2024;3(4). doi:<a href=\"https://doi.org/10.3788/pi.2024.c08\">10.3788/pi.2024.c08</a>","chicago":"Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field of Metasurface Optics.” <i>Photonics Insights</i> 3, no. 4 (2024). <a href=\"https://doi.org/10.3788/pi.2024.c08\">https://doi.org/10.3788/pi.2024.c08</a>.","ieee":"N. A. Güsken and M. L. Brongersma, “Electrifying the field of metasurface optics,” <i>Photonics Insights</i>, vol. 3, no. 4, Art. no. C08, 2024, doi: <a href=\"https://doi.org/10.3788/pi.2024.c08\">10.3788/pi.2024.c08</a>."},"publication_identifier":{"issn":["2791-1748"]},"publication_status":"published","issue":"4","title":"Electrifying the field of metasurface optics","doi":"10.3788/pi.2024.c08","publisher":"Shanghai Institute of Optics and Fine Mechanics","date_updated":"2025-12-15T11:21:46Z","volume":3,"date_created":"2025-12-11T20:41:41Z","author":[{"id":"112030","full_name":"Güsken, Nicholas Alexander","orcid":"0000-0002-4816-0666","last_name":"Güsken","first_name":"Nicholas Alexander"},{"first_name":"Mark L.","last_name":"Brongersma","full_name":"Brongersma, Mark L."}],"status":"public","publication":"Photonics Insights","type":"journal_article","article_number":"C08","language":[{"iso":"eng"}],"_id":"63049","department":[{"_id":"623"},{"_id":"15"},{"_id":"230"}],"user_id":"112030"},{"doi":"10.1088/2058-9565/ad8511","main_file_link":[{"open_access":"1"}],"date_updated":"2025-12-16T11:32:12Z","oa":"1","volume":10,"author":[{"full_name":"Schapeler, Timon","id":"55629","last_name":"Schapeler","orcid":"0000-0001-7652-1716","first_name":"Timon"},{"first_name":"Robert","orcid":"0000-0002-6268-5397","last_name":"Schade","id":"75963","full_name":"Schade, Robert"},{"first_name":"Michael","full_name":"Lass, Michael","id":"24135","orcid":"0000-0002-5708-7632","last_name":"Lass"},{"first_name":"Christian","last_name":"Plessl","orcid":"0000-0001-5728-9982","id":"16153","full_name":"Plessl, Christian"},{"first_name":"Tim","last_name":"Bartley","id":"49683","full_name":"Bartley, Tim"}],"intvolume":"        10","citation":{"apa":"Schapeler, T., Schade, R., Lass, M., Plessl, C., &#38; Bartley, T. (2024). Scalable quantum detector tomography by high-performance computing. <i>Quantum Science and Technology</i>, <i>10</i>(1). <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">https://doi.org/10.1088/2058-9565/ad8511</a>","bibtex":"@article{Schapeler_Schade_Lass_Plessl_Bartley_2024, title={Scalable quantum detector tomography by high-performance computing}, volume={10}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>}, number={1}, journal={Quantum Science and Technology}, publisher={IOP Publishing}, author={Schapeler, Timon and Schade, Robert and Lass, Michael and Plessl, Christian and Bartley, Tim}, year={2024} }","short":"T. Schapeler, R. Schade, M. Lass, C. Plessl, T. Bartley, Quantum Science and Technology 10 (2024).","mla":"Schapeler, Timon, et al. “Scalable Quantum Detector Tomography by High-Performance Computing.” <i>Quantum Science and Technology</i>, vol. 10, no. 1, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>.","ieee":"T. Schapeler, R. Schade, M. Lass, C. Plessl, and T. Bartley, “Scalable quantum detector tomography by high-performance computing,” <i>Quantum Science and Technology</i>, vol. 10, no. 1, 2024, doi: <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>.","chicago":"Schapeler, Timon, Robert Schade, Michael Lass, Christian Plessl, and Tim Bartley. “Scalable Quantum Detector Tomography by High-Performance Computing.” <i>Quantum Science and Technology</i> 10, no. 1 (2024). <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">https://doi.org/10.1088/2058-9565/ad8511</a>.","ama":"Schapeler T, Schade R, Lass M, Plessl C, Bartley T. Scalable quantum detector tomography by high-performance computing. <i>Quantum Science and Technology</i>. 2024;10(1). doi:<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>"},"_id":"53202","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications","_id":"239"},{"name":"PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"}],"department":[{"_id":"27"},{"_id":"623"},{"_id":"15"}],"user_id":"55629","status":"public","type":"journal_article","title":"Scalable quantum detector tomography by high-performance computing","publisher":"IOP Publishing","date_created":"2024-04-04T08:43:18Z","year":"2024","issue":"1","language":[{"iso":"eng"}],"external_id":{"arxiv":["2404.02844"]},"abstract":[{"lang":"eng","text":"At large scales, quantum systems may become advantageous over their classical counterparts at performing certain tasks. Developing tools to analyze these systems at the relevant scales, in a manner consistent with quantum mechanics, is therefore critical to benchmarking performance and characterizing their operation. While classical computational approaches cannot perform like-for-like computations of quantum systems beyond a certain scale, classical high-performance computing (HPC) may nevertheless be useful for precisely these characterization and certification tasks. By developing open-source customized algorithms using high-performance computing, we perform quantum tomography on a megascale quantum photonic detector covering a Hilbert space of 106. This requires finding 108 elements of the matrix corresponding to the positive operator valued measure (POVM), the quantum description of the detector, and is achieved in minutes of computation time. Moreover, by exploiting the structure of the problem, we achieve highly efficient parallel scaling, paving the way for quantum objects up to a system size of 1012 elements to be reconstructed using this method. In general, this shows that a consistent quantum mechanical description of quantum phenomena is applicable at everyday scales. More concretely, this enables the reconstruction of large-scale quantum sources, processes and detectors used in computation and sampling tasks, which may be necessary to prove their nonclassical character or quantum computational advantage."}],"publication":"Quantum Science and Technology"},{"department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","_id":"63219","language":[{"iso":"eng"}],"article_number":"012231","publication":"Physical Review A","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>"}],"volume":110,"author":[{"first_name":"Y. S.","last_name":"Teo","full_name":"Teo, Y. S."},{"first_name":"S. U.","last_name":"Shringarpure","full_name":"Shringarpure, S. U."},{"last_name":"Jeong","full_name":"Jeong, H.","first_name":"H."},{"last_name":"Prasannan","full_name":"Prasannan, Nidhin","id":"71403","first_name":"Nidhin"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"},{"full_name":"Evans, M.","last_name":"Evans","first_name":"M."},{"first_name":"D.","full_name":"Mogilevtsev, D.","last_name":"Mogilevtsev"},{"last_name":"Sánchez-Soto","full_name":"Sánchez-Soto, L. L.","first_name":"L. L."}],"date_created":"2025-12-18T16:12:21Z","date_updated":"2025-12-18T16:12:40Z","publisher":"American Physical Society (APS)","doi":"10.1103/physreva.110.012231","title":"Relative-belief inference in quantum information theory","issue":"1","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","intvolume":"       110","citation":{"ama":"Teo YS, Shringarpure SU, Jeong H, et al. Relative-belief inference in quantum information theory. <i>Physical Review A</i>. 2024;110(1). doi:<a href=\"https://doi.org/10.1103/physreva.110.012231\">10.1103/physreva.110.012231</a>","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.” <i>Physical Review A</i> 110, no. 1 (2024). <a href=\"https://doi.org/10.1103/physreva.110.012231\">https://doi.org/10.1103/physreva.110.012231</a>.","ieee":"Y. S. Teo <i>et al.</i>, “Relative-belief inference in quantum information theory,” <i>Physical Review A</i>, vol. 110, no. 1, Art. no. 012231, 2024, doi: <a href=\"https://doi.org/10.1103/physreva.110.012231\">10.1103/physreva.110.012231</a>.","bibtex":"@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Relative-belief inference in quantum information theory}, volume={110}, DOI={<a href=\"https://doi.org/10.1103/physreva.110.012231\">10.1103/physreva.110.012231</a>}, 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).","mla":"Teo, Y. S., et al. “Relative-Belief Inference in Quantum Information Theory.” <i>Physical Review A</i>, vol. 110, no. 1, 012231, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physreva.110.012231\">10.1103/physreva.110.012231</a>.","apa":"Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., &#38; Sánchez-Soto, L. L. (2024). Relative-belief inference in quantum information theory. <i>Physical Review A</i>, <i>110</i>(1), Article 012231. <a href=\"https://doi.org/10.1103/physreva.110.012231\">https://doi.org/10.1103/physreva.110.012231</a>"},"year":"2024"},{"year":"2024","citation":{"mla":"Bhattacharjee, Abhinandan, et al. “Pulse Characterization at the Single-Photon Level through Chronocyclic <i>Q</i>-Function Measurements.” <i>Optics Express</i>, vol. 33, no. 3, 5551, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/oe.540125\">10.1364/oe.540125</a>.","bibtex":"@article{Bhattacharjee_Folge_Serino_Řeháček_Hradil_Silberhorn_Brecht_2024, title={Pulse characterization at the single-photon level through chronocyclic <i>Q</i>-function measurements}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.540125\">10.1364/oe.540125</a>}, 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} }","short":"A. Bhattacharjee, P.F. Folge, L.M. Serino, J. Řeháček, Z. Hradil, C. Silberhorn, B. Brecht, Optics Express 33 (2024).","apa":"Bhattacharjee, A., Folge, P. F., Serino, L. M., Řeháček, J., Hradil, Z., Silberhorn, C., &#38; Brecht, B. (2024). Pulse characterization at the single-photon level through chronocyclic <i>Q</i>-function measurements. <i>Optics Express</i>, <i>33</i>(3), Article 5551. <a href=\"https://doi.org/10.1364/oe.540125\">https://doi.org/10.1364/oe.540125</a>","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 <i>Q</i>-Function Measurements.” <i>Optics Express</i> 33, no. 3 (2024). <a href=\"https://doi.org/10.1364/oe.540125\">https://doi.org/10.1364/oe.540125</a>.","ieee":"A. Bhattacharjee <i>et al.</i>, “Pulse characterization at the single-photon level through chronocyclic <i>Q</i>-function measurements,” <i>Optics Express</i>, vol. 33, no. 3, Art. no. 5551, 2024, doi: <a href=\"https://doi.org/10.1364/oe.540125\">10.1364/oe.540125</a>.","ama":"Bhattacharjee A, Folge PF, Serino LM, et al. Pulse characterization at the single-photon level through chronocyclic <i>Q</i>-function measurements. <i>Optics Express</i>. 2024;33(3). doi:<a href=\"https://doi.org/10.1364/oe.540125\">10.1364/oe.540125</a>"},"intvolume":"        33","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"issue":"3","title":"Pulse characterization at the single-photon level through chronocyclic <i>Q</i>-function measurements","doi":"10.1364/oe.540125","publisher":"Optica Publishing Group","date_updated":"2025-12-18T16:08:40Z","date_created":"2025-12-18T16:08:16Z","author":[{"last_name":"Bhattacharjee","id":"95902","full_name":"Bhattacharjee, Abhinandan","first_name":"Abhinandan"},{"first_name":"Patrick Fabian","id":"88605","full_name":"Folge, Patrick Fabian","last_name":"Folge"},{"full_name":"Serino, Laura Maria","id":"88242","last_name":"Serino","first_name":"Laura Maria"},{"last_name":"Řeháček","full_name":"Řeháček, Jaroslav","first_name":"Jaroslav"},{"first_name":"Zdeněk","full_name":"Hradil, Zdeněk","last_name":"Hradil"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 "}],"volume":33,"abstract":[{"lang":"eng","text":"<jats:p>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 <jats:italic toggle=\"yes\">Q</jats:italic> −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 <jats:italic toggle=\"yes\">Q</jats:italic> −function. We evaluate the complex spectral amplitude from the measured chronocyclic <jats:italic toggle=\"yes\">Q</jats:italic> −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 <jats:italic toggle=\"yes\">a priori</jats:italic> 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.</jats:p>"}],"status":"public","type":"journal_article","publication":"Optics Express","article_number":"5551","language":[{"iso":"eng"}],"_id":"63216","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}]},{"article_number":"050204","language":[{"iso":"eng"}],"_id":"63220","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>"}],"status":"public","type":"journal_article","publication":"Physical Review Letters","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.","last_name":"Shringarpure","full_name":"Shringarpure, S. U."},{"last_name":"Jeong","full_name":"Jeong, H.","first_name":"H."},{"first_name":"Nidhin","full_name":"Prasannan, Nidhin","id":"71403","last_name":"Prasannan"},{"full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"last_name":"Evans","full_name":"Evans, M.","first_name":"M."},{"last_name":"Mogilevtsev","full_name":"Mogilevtsev, D.","first_name":"D."},{"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":{"bibtex":"@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Evidence-Based Certification of Quantum Dimensions}, volume={133}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.133.050204\">10.1103/physrevlett.133.050204</a>}, 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.” <i>Physical Review Letters</i>, vol. 133, no. 5, 050204, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevlett.133.050204\">10.1103/physrevlett.133.050204</a>.","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).","apa":"Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., &#38; Sánchez-Soto, L. L. (2024). Evidence-Based Certification of Quantum Dimensions. <i>Physical Review Letters</i>, <i>133</i>(5), Article 050204. <a href=\"https://doi.org/10.1103/physrevlett.133.050204\">https://doi.org/10.1103/physrevlett.133.050204</a>","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.” <i>Physical Review Letters</i> 133, no. 5 (2024). <a href=\"https://doi.org/10.1103/physrevlett.133.050204\">https://doi.org/10.1103/physrevlett.133.050204</a>.","ieee":"Y. S. Teo <i>et al.</i>, “Evidence-Based Certification of Quantum Dimensions,” <i>Physical Review Letters</i>, vol. 133, no. 5, Art. no. 050204, 2024, doi: <a href=\"https://doi.org/10.1103/physrevlett.133.050204\">10.1103/physrevlett.133.050204</a>.","ama":"Teo YS, Shringarpure SU, Jeong H, et al. Evidence-Based Certification of Quantum Dimensions. <i>Physical Review Letters</i>. 2024;133(5). doi:<a href=\"https://doi.org/10.1103/physrevlett.133.050204\">10.1103/physrevlett.133.050204</a>"},"intvolume":"       133","publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"issue":"5"},{"publication":"Physical Review Research","abstract":[{"text":"<jats:p>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.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>","lang":"eng"}],"language":[{"iso":"eng"}],"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","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","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"citation":{"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.” <i>Physical Review Research</i> 6, no. 2 (2024). <a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">https://doi.org/10.1103/physrevresearch.6.l022040</a>.","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,” <i>Physical Review Research</i>, vol. 6, no. 2, Art. no. L022040, 2024, doi: <a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">10.1103/physrevresearch.6.l022040</a>.","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. <i>Physical Review Research</i>. 2024;6(2). doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">10.1103/physrevresearch.6.l022040</a>","apa":"De, S., Ansari, V., Sperling, J., Barkhofen, S., Brecht, B., &#38; Silberhorn, C. (2024). Realization of high-fidelity unitary operations on up to 64 frequency bins. <i>Physical Review Research</i>, <i>6</i>(2), Article L022040. <a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">https://doi.org/10.1103/physrevresearch.6.l022040</a>","mla":"De, Syamsundar, et al. “Realization of High-Fidelity Unitary Operations on up to 64 Frequency Bins.” <i>Physical Review Research</i>, vol. 6, no. 2, L022040, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">10.1103/physrevresearch.6.l022040</a>.","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={<a href=\"https://doi.org/10.1103/physrevresearch.6.l022040\">10.1103/physrevresearch.6.l022040</a>}, 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} }","short":"S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, C. Silberhorn, Physical Review Research 6 (2024)."},"intvolume":"         6","author":[{"first_name":"Syamsundar","last_name":"De","full_name":"De, Syamsundar"},{"full_name":"Ansari, Vahid","last_name":"Ansari","first_name":"Vahid"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205"},{"first_name":"Sonja","last_name":"Barkhofen","full_name":"Barkhofen, Sonja","id":"48188"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"volume":6,"date_updated":"2025-12-18T16:14:39Z","doi":"10.1103/physrevresearch.6.l022040"},{"publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:10:55Z","volume":5,"author":[{"first_name":"Patrick Fabian","last_name":"Folge","full_name":"Folge, Patrick Fabian","id":"88605"},{"id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"date_created":"2025-12-18T16:10:37Z","title":"A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates","doi":"10.1103/prxquantum.5.040329","publication_identifier":{"issn":["2691-3399"]},"publication_status":"published","issue":"4","year":"2024","intvolume":"         5","citation":{"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={<a href=\"https://doi.org/10.1103/prxquantum.5.040329\">10.1103/prxquantum.5.040329</a>}, 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} }","short":"P.F. Folge, M. Stefszky, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024).","mla":"Folge, Patrick Fabian, et al. “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates.” <i>PRX Quantum</i>, vol. 5, no. 4, 040329, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/prxquantum.5.040329\">10.1103/prxquantum.5.040329</a>.","apa":"Folge, P. F., Stefszky, M., Brecht, B., &#38; Silberhorn, C. (2024). A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. <i>PRX Quantum</i>, <i>5</i>(4), Article 040329. <a href=\"https://doi.org/10.1103/prxquantum.5.040329\">https://doi.org/10.1103/prxquantum.5.040329</a>","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.” <i>PRX Quantum</i> 5, no. 4 (2024). <a href=\"https://doi.org/10.1103/prxquantum.5.040329\">https://doi.org/10.1103/prxquantum.5.040329</a>.","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,” <i>PRX Quantum</i>, vol. 5, no. 4, Art. no. 040329, 2024, doi: <a href=\"https://doi.org/10.1103/prxquantum.5.040329\">10.1103/prxquantum.5.040329</a>.","ama":"Folge PF, Stefszky M, Brecht B, Silberhorn C. A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. <i>PRX Quantum</i>. 2024;5(4). doi:<a href=\"https://doi.org/10.1103/prxquantum.5.040329\">10.1103/prxquantum.5.040329</a>"},"_id":"63218","department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","article_number":"040329","language":[{"iso":"eng"}],"publication":"PRX Quantum","type":"journal_article","abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>"}],"status":"public"},{"article_number":"5577","language":[{"iso":"eng"}],"_id":"63217","department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","abstract":[{"lang":"eng","text":"<jats:p>We demonstrate a high-dimensional mode-sorter for single photons based on a multi-output quantum pulse gate, which we can program to switch between different temporal-mode encodings including pulse modes, frequency bins, time bins, and their superpositions. This device can facilitate practical realizations of quantum information applications such as high-dimensional quantum key distribution and thus enables secure communication with enhanced information capacity. We characterize the mode-sorter through a detector tomography in 3 and 5 dimensions and find a fidelity up to 0.958 ± 0.030 at the single-photon level.</jats:p>"}],"status":"public","publication":"Optics Express","type":"journal_article","title":"Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate","doi":"10.1364/oe.544206","publisher":"Optica Publishing Group","date_updated":"2025-12-18T16:09:44Z","volume":33,"date_created":"2025-12-18T16:09:22Z","author":[{"last_name":"Serino","id":"88242","full_name":"Serino, Laura Maria","first_name":"Laura Maria"},{"full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"year":"2024","intvolume":"        33","citation":{"ama":"Serino LM, Eigner C, Brecht B, Silberhorn C. Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate. <i>Optics Express</i>. 2024;33(3). doi:<a href=\"https://doi.org/10.1364/oe.544206\">10.1364/oe.544206</a>","chicago":"Serino, Laura Maria, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output Quantum Pulse Gate.” <i>Optics Express</i> 33, no. 3 (2024). <a href=\"https://doi.org/10.1364/oe.544206\">https://doi.org/10.1364/oe.544206</a>.","ieee":"L. M. Serino, C. Eigner, B. Brecht, and C. Silberhorn, “Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate,” <i>Optics Express</i>, vol. 33, no. 3, Art. no. 5577, 2024, doi: <a href=\"https://doi.org/10.1364/oe.544206\">10.1364/oe.544206</a>.","apa":"Serino, L. M., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2024). Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate. <i>Optics Express</i>, <i>33</i>(3), Article 5577. <a href=\"https://doi.org/10.1364/oe.544206\">https://doi.org/10.1364/oe.544206</a>","short":"L.M. Serino, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 33 (2024).","mla":"Serino, Laura Maria, et al. “Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output Quantum Pulse Gate.” <i>Optics Express</i>, vol. 33, no. 3, 5577, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/oe.544206\">10.1364/oe.544206</a>.","bibtex":"@article{Serino_Eigner_Brecht_Silberhorn_2024, title={Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.544206\">10.1364/oe.544206</a>}, number={35577}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Serino, Laura Maria and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"3"},{"intvolume":"         2","citation":{"chicago":"Protte, Maximilian, Timon Schapeler, Jan Sperling, and Tim Bartley. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” <i>Optica Quantum</i> 2, no. 1 (2024). <a href=\"https://doi.org/10.1364/opticaq.502201\">https://doi.org/10.1364/opticaq.502201</a>.","ieee":"M. Protte, T. Schapeler, J. Sperling, and T. Bartley, “Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors,” <i>Optica Quantum</i>, vol. 2, no. 1, Art. no. 1, 2024, doi: <a href=\"https://doi.org/10.1364/opticaq.502201\">10.1364/opticaq.502201</a>.","ama":"Protte M, Schapeler T, Sperling J, Bartley T. Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. <i>Optica Quantum</i>. 2024;2(1). doi:<a href=\"https://doi.org/10.1364/opticaq.502201\">10.1364/opticaq.502201</a>","apa":"Protte, M., Schapeler, T., Sperling, J., &#38; Bartley, T. (2024). Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. <i>Optica Quantum</i>, <i>2</i>(1), Article 1. <a href=\"https://doi.org/10.1364/opticaq.502201\">https://doi.org/10.1364/opticaq.502201</a>","bibtex":"@article{Protte_Schapeler_Sperling_Bartley_2024, title={Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors}, volume={2}, DOI={<a href=\"https://doi.org/10.1364/opticaq.502201\">10.1364/opticaq.502201</a>}, number={11}, journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Protte, Maximilian and Schapeler, Timon and Sperling, Jan and Bartley, Tim}, year={2024} }","mla":"Protte, Maximilian, et al. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” <i>Optica Quantum</i>, vol. 2, no. 1, 1, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/opticaq.502201\">10.1364/opticaq.502201</a>.","short":"M. Protte, T. Schapeler, J. Sperling, T. Bartley, Optica Quantum 2 (2024)."},"year":"2024","issue":"1","publication_identifier":{"issn":["2837-6714"]},"publication_status":"published","doi":"10.1364/opticaq.502201","main_file_link":[{"open_access":"1"}],"title":"Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors","volume":2,"date_created":"2024-01-25T11:48:02Z","author":[{"first_name":"Maximilian","full_name":"Protte, Maximilian","id":"46170","last_name":"Protte"},{"full_name":"Schapeler, Timon","id":"55629","orcid":"0000-0001-7652-1716","last_name":"Schapeler","first_name":"Timon"},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127","first_name":"Jan"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"date_updated":"2025-12-18T17:06:27Z","oa":"1","publisher":"Optica Publishing Group","status":"public","abstract":[{"text":"<jats:p>Superconducting nanowire single-photon detectors (SNSPDs) have been widely used to study the discrete nature of quantum states of light in the form of photon-counting experiments. We show that SNSPDs can also be used to study continuous variables of optical quantum states by performing homodyne detection at a bandwidth of 400 kHz. By measuring the interference of a continuous-wave field of a local oscillator with the field of the vacuum state using two SNSPDs, we show that the variance of the difference in count rates is linearly proportional to the photon flux of the local oscillator over almost five orders of magnitude. The resulting shot-noise clearance of (46.0 ± 1.1) dB is the highest reported clearance for a balanced optical homodyne detector, demonstrating their potential for measuring highly squeezed states in the continuous-wave regime. In addition, we measured a CMRR = 22.4 dB. From the joint click counting statistics, we also measure the phase-dependent quadrature of a weak coherent state to demonstrate our device’s functionality as a homodyne detector.</jats:p>","lang":"eng"}],"publication":"Optica Quantum","type":"journal_article","language":[{"iso":"eng"}],"article_number":"1","department":[{"_id":"15"},{"_id":"623"}],"user_id":"55629","_id":"50840","project":[{"_id":"191","name":"PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform"},{"name":"ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications","_id":"239"},{"_id":"209","name":"ISOQC: Quantenkommunikation mit integrierter Optik im Zusammenhang mit supraleitender Elektronik"}]},{"date_created":"2024-06-19T06:58:17Z","publisher":"Optica Publishing Group","title":"Integrated, bright broadband, two-colour parametric down-conversion source","issue":"14","year":"2024","language":[{"iso":"eng"}],"publication":"Optics Express","abstract":[{"lang":"eng","text":"<jats:p>Broadband quantum light is a vital resource for quantum metrology and spectroscopy applications such as quantum optical coherence tomography or entangled two photon absorption. For entangled two photon absorption in particular, very high photon flux combined with high time-frequency entanglement is crucial for observing a signal. So far these conditions could be met by using high power lasers driving degenerate, type 0 bulk-crystal spontaneous parametric down conversion (SPDC) sources. This naturally limits the available wavelength ranges and precludes deterministic splitting of the generated output photons. In this work we demonstrate an integrated two-colour SPDC source utilising a group-velocity matched lithium niobate waveguide, reaching both exceptional brightness 1.52⋅10<jats:sup>6</jats:sup>pairssmWGHz and large bandwidth (7.8 THz FWHM) while pumped with a few mW of continuous wave (CW) laser light. By converting a narrow band pump to broadband pulses the created photon pairs show correlation times of Δ<jats:italic>τ</jats:italic> ≈ 120 fs while maintaining the narrow bandwidth Δ<jats:italic>ω</jats:italic><jats:sub>\r\n      <jats:italic>p</jats:italic>\r\n    </jats:sub> ≪ 1 MHz of the CW pump light, yielding strong time-frequency entanglement. Furthermore our process can be adapted to a wide range of central wavelengths.</jats:p>"}],"volume":32,"author":[{"last_name":"Pollmann","full_name":"Pollmann, René","id":"78890","first_name":"René"},{"first_name":"Franz","full_name":"Roeder, Franz","id":"88149","last_name":"Roeder"},{"first_name":"Victor","last_name":"Quiring","full_name":"Quiring, Victor"},{"first_name":"Raimund","full_name":"Ricken, Raimund","last_name":"Ricken"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"date_updated":"2025-12-19T11:37:41Z","doi":"10.1364/oe.522549","publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","intvolume":"        32","citation":{"apa":"Pollmann, R., Roeder, F., Quiring, V., Ricken, R., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2024). Integrated, bright broadband, two-colour parametric down-conversion source. <i>Optics Express</i>, <i>32</i>(14), Article 23945. <a href=\"https://doi.org/10.1364/oe.522549\">https://doi.org/10.1364/oe.522549</a>","mla":"Pollmann, René, et al. “Integrated, Bright Broadband, Two-Colour Parametric down-Conversion Source.” <i>Optics Express</i>, vol. 32, no. 14, 23945, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/oe.522549\">10.1364/oe.522549</a>.","bibtex":"@article{Pollmann_Roeder_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024, title={Integrated, bright broadband, two-colour parametric down-conversion source}, volume={32}, DOI={<a href=\"https://doi.org/10.1364/oe.522549\">10.1364/oe.522549</a>}, number={1423945}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Pollmann, René and Roeder, Franz and Quiring, Victor and Ricken, Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","short":"R. Pollmann, F. Roeder, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 32 (2024).","chicago":"Pollmann, René, Franz Roeder, Victor Quiring, Raimund Ricken, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Integrated, Bright Broadband, Two-Colour Parametric down-Conversion Source.” <i>Optics Express</i> 32, no. 14 (2024). <a href=\"https://doi.org/10.1364/oe.522549\">https://doi.org/10.1364/oe.522549</a>.","ieee":"R. Pollmann <i>et al.</i>, “Integrated, bright broadband, two-colour parametric down-conversion source,” <i>Optics Express</i>, vol. 32, no. 14, Art. no. 23945, 2024, doi: <a href=\"https://doi.org/10.1364/oe.522549\">10.1364/oe.522549</a>.","ama":"Pollmann R, Roeder F, Quiring V, et al. Integrated, bright broadband, two-colour parametric down-conversion source. <i>Optics Express</i>. 2024;32(14). doi:<a href=\"https://doi.org/10.1364/oe.522549\">10.1364/oe.522549</a>"},"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"78890","_id":"54815","article_type":"original","article_number":"23945","type":"journal_article","status":"public"}]