[{"article_number":"034031","language":[{"iso":"eng"}],"_id":"65094","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"27150","abstract":[{"text":"<jats:p>\r\n                    The development of practical sensors for optical coherence tomography (OCT) with undetected photons requires miniaturization via integration. To be practical, these sensors must exhibit a large spectral bandwidth and a high brightness, which are linked to a high axial resolution and a sufficient signal-to-noise ratio, respectively. Here, we combine these requirements in a scheme for OCT measurements with undetected photons based on nonlinear\r\n                    <a:math xmlns:a=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\">\r\n                      <a:mi>Ti</a:mi>\r\n                      <a:mo>:</a:mo>\r\n                      <a:msub>\r\n                        <a:mrow>\r\n                          <a:mi>Li</a:mi>\r\n                          <a:mi>Nb</a:mi>\r\n                          <a:mi mathvariant=\"normal\">O</a:mi>\r\n                        </a:mrow>\r\n                        <a:mn>3</a:mn>\r\n                      </a:msub>\r\n                    </a:math>\r\n                    waveguides. We investigate the performance benchmarks of the commonly used SU(1,1) scheme in comparison to an induced-coherence scheme and find that the latter is actually better suited when implementing measurements with undetected photons in integrated systems. In both schemes, we perform pump-gain optimization and OCT measurements with undetected photons with an axial resolution as low as\r\n                    <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\">\r\n                      <d:mn>28</d:mn>\r\n                      <d:mspace width=\"0.2em\"/>\r\n                      <d:mtext fontfamily=\"times\">μ</d:mtext>\r\n                      <d:mrow>\r\n                        <d:mi mathvariant=\"normal\">m</d:mi>\r\n                      </d:mrow>\r\n                    </d:math>\r\n                    .\r\n                  </jats:p>","lang":"eng"}],"status":"public","publication":"Physical Review Applied","type":"journal_article","title":"Toward integrated sensors for optimized optical coherence tomography with undetected photons","doi":"10.1103/cwsx-42c4","date_updated":"2026-03-25T07:59:04Z","publisher":"American Physical Society (APS)","volume":25,"author":[{"last_name":"Roeder","id":"88149","full_name":"Roeder, Franz","first_name":"Franz"},{"first_name":"René","id":"78890","full_name":"Pollmann, René","last_name":"Pollmann"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"date_created":"2026-03-23T12:28:33Z","year":"2026","intvolume":"        25","citation":{"ieee":"F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, and C. Silberhorn, “Toward integrated sensors for optimized optical coherence tomography with undetected photons,” <i>Physical Review Applied</i>, vol. 25, no. 3, Art. no. 034031, 2026, doi: <a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>.","chicago":"Roeder, Franz, René Pollmann, Viktor Quiring, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Toward Integrated Sensors for Optimized Optical Coherence Tomography with Undetected Photons.” <i>Physical Review Applied</i> 25, no. 3 (2026). <a href=\"https://doi.org/10.1103/cwsx-42c4\">https://doi.org/10.1103/cwsx-42c4</a>.","ama":"Roeder F, Pollmann R, Quiring V, Eigner C, Brecht B, Silberhorn C. Toward integrated sensors for optimized optical coherence tomography with undetected photons. <i>Physical Review Applied</i>. 2026;25(3). doi:<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>","mla":"Roeder, Franz, et al. “Toward Integrated Sensors for Optimized Optical Coherence Tomography with Undetected Photons.” <i>Physical Review Applied</i>, vol. 25, no. 3, 034031, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>.","short":"F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, C. Silberhorn, Physical Review Applied 25 (2026).","bibtex":"@article{Roeder_Pollmann_Quiring_Eigner_Brecht_Silberhorn_2026, title={Toward integrated sensors for optimized optical coherence tomography with undetected photons}, volume={25}, DOI={<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>}, number={3034031}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Roeder, Franz and Pollmann, René and Quiring, Viktor and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2026} }","apa":"Roeder, F., Pollmann, R., Quiring, V., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2026). Toward integrated sensors for optimized optical coherence tomography with undetected photons. <i>Physical Review Applied</i>, <i>25</i>(3), Article 034031. <a href=\"https://doi.org/10.1103/cwsx-42c4\">https://doi.org/10.1103/cwsx-42c4</a>"},"publication_identifier":{"issn":["2331-7019"]},"publication_status":"published","issue":"3"},{"date_updated":"2026-03-25T07:59:23Z","author":[{"first_name":"Patrick Fabian","last_name":"Folge","id":"88605","full_name":"Folge, Patrick Fabian"},{"first_name":"Laura Maria","full_name":"Serino, Laura Maria","id":"88242","last_name":"Serino"},{"first_name":"Ladislav","full_name":"Mišta, Ladislav","last_name":"Mišta"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Jaroslav","full_name":"Řeháček, Jaroslav","last_name":"Řeháček"},{"first_name":"Zdeněk","full_name":"Hradil, Zdeněk","last_name":"Hradil"}],"volume":13,"doi":"10.1364/optica.579459","publication_status":"published","publication_identifier":{"issn":["2334-2536"]},"citation":{"short":"P.F. Folge, L.M. Serino, L. Mišta, B. Brecht, C. Silberhorn, J. Řeháček, Z. Hradil, Optica 13 (2026).","bibtex":"@article{Folge_Serino_Mišta_Brecht_Silberhorn_Řeháček_Hradil_2026, title={Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>}, number={3548}, journal={Optica}, publisher={Optica Publishing Group}, author={Folge, Patrick Fabian and Serino, Laura Maria and Mišta, Ladislav and Brecht, Benjamin and Silberhorn, Christine and Řeháček, Jaroslav and Hradil, Zdeněk}, year={2026} }","mla":"Folge, Patrick Fabian, et al. “Quantum-Limited Detection of the Arrival Time and the Carrier Frequency of Time-Dependent Signals.” <i>Optica</i>, vol. 13, no. 3, 548, Optica Publishing Group, 2026, doi:<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>.","apa":"Folge, P. F., Serino, L. M., Mišta, L., Brecht, B., Silberhorn, C., Řeháček, J., &#38; Hradil, Z. (2026). Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals. <i>Optica</i>, <i>13</i>(3), Article 548. <a href=\"https://doi.org/10.1364/optica.579459\">https://doi.org/10.1364/optica.579459</a>","ieee":"P. F. Folge <i>et al.</i>, “Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals,” <i>Optica</i>, vol. 13, no. 3, Art. no. 548, 2026, doi: <a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>.","chicago":"Folge, Patrick Fabian, Laura Maria Serino, Ladislav Mišta, Benjamin Brecht, Christine Silberhorn, Jaroslav Řeháček, and Zdeněk Hradil. “Quantum-Limited Detection of the Arrival Time and the Carrier Frequency of Time-Dependent Signals.” <i>Optica</i> 13, no. 3 (2026). <a href=\"https://doi.org/10.1364/optica.579459\">https://doi.org/10.1364/optica.579459</a>.","ama":"Folge PF, Serino LM, Mišta L, et al. Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals. <i>Optica</i>. 2026;13(3). doi:<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>"},"intvolume":"        13","_id":"65096","user_id":"27150","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"article_number":"548","type":"journal_article","status":"public","publisher":"Optica Publishing Group","date_created":"2026-03-23T12:30:02Z","title":"Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals","issue":"3","year":"2026","language":[{"iso":"eng"}],"publication":"Optica","abstract":[{"text":"<jats:p>\r\n                    Precise measurements of both the arrival time and carrier frequency of light pulses are essential for time–frequency-encoded quantum technologies. Quantum mechanics, however, imposes fundamental limits on the simultaneous determination of these quantities. In this work, we derive and experimentally verify the quantum uncertainty bounds governing joint time–frequency measurements. We show that when detection is restricted to finite time windows, the problem is naturally described by a quantum rotor, rendering the commonly used Heisenberg uncertainty relation inapplicable. We further propose an optimal detection scheme that saturates these fundamental limits. By sampling the\r\n                    <jats:italic toggle=\"yes\">Q</jats:italic>\r\n                    -function, we demonstrate the reconstruction of the Wigner function beyond the harmonic oscillator. Using an experimental implementation based on a quantum pulse gate, we confirm that the proposed scheme approaches the ultimate quantum limit for simultaneous time–frequency measurements. These results provide a framework for joint time–frequency detection with direct implications for precision measurements and quantum information processing.\r\n                  </jats:p>","lang":"eng"}]},{"status":"public","type":"journal_article","article_number":"016102","user_id":"27150","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"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":"63451","citation":{"ama":"Schapeler T, Mischke I, Schlue F, et al. Practical considerations for assignment of photon numbers with SNSPDs. <i>APL Quantum</i>. 2026;3(1). doi:<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>","ieee":"T. Schapeler <i>et al.</i>, “Practical considerations for assignment of photon numbers with SNSPDs,” <i>APL Quantum</i>, vol. 3, no. 1, Art. no. 016102, 2026, doi: <a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>.","chicago":"Schapeler, Timon, Isabell Mischke, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Practical Considerations for Assignment of Photon Numbers with SNSPDs.” <i>APL Quantum</i> 3, no. 1 (2026). <a href=\"https://doi.org/10.1063/5.0304127\">https://doi.org/10.1063/5.0304127</a>.","bibtex":"@article{Schapeler_Mischke_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2026, title={Practical considerations for assignment of photon numbers with SNSPDs}, volume={3}, DOI={<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>}, number={1016102}, journal={APL Quantum}, publisher={AIP Publishing}, author={Schapeler, Timon and Mischke, Isabell and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, year={2026} }","short":"T. Schapeler, I. Mischke, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, APL Quantum 3 (2026).","mla":"Schapeler, Timon, et al. “Practical Considerations for Assignment of Photon Numbers with SNSPDs.” <i>APL Quantum</i>, vol. 3, no. 1, 016102, AIP Publishing, 2026, doi:<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>.","apa":"Schapeler, T., Mischke, I., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2026). Practical considerations for assignment of photon numbers with SNSPDs. <i>APL Quantum</i>, <i>3</i>(1), Article 016102. <a href=\"https://doi.org/10.1063/5.0304127\">https://doi.org/10.1063/5.0304127</a>"},"intvolume":"         3","publication_status":"published","publication_identifier":{"issn":["2835-0103"]},"main_file_link":[{"open_access":"1"}],"doi":"10.1063/5.0304127","author":[{"orcid":"0000-0001-7652-1716","last_name":"Schapeler","id":"55629","full_name":"Schapeler, Timon","first_name":"Timon"},{"first_name":"Isabell","full_name":"Mischke, Isabell","last_name":"Mischke"},{"first_name":"Fabian","last_name":"Schlue","full_name":"Schlue, Fabian","id":"63579"},{"first_name":"Michael","id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"volume":3,"date_updated":"2026-03-25T08:00:27Z","oa":"1","abstract":[{"lang":"eng","text":"<jats:p>Superconducting nanowire single-photon detectors (SNSPDs) can enable photon-number resolution (PNR) based on accurate measurements of the detector’s response time to few-photon optical pulses. In this work, we investigate the impact of the optical pulse shape and duration on the accuracy of this method. We find that Gaussian temporal pulse shapes yield cleaner arrival-time histograms and, thus, more accurate PNR, compared to bandpass-filtered pulses of equal bandwidth. For low system jitter and an optical pulse duration comparable to the other jitter contributions, photon numbers can be discriminated in our system with a commercial SNSPD. At 60 ps optical pulse duration, photon-number discrimination is significantly reduced. Furthermore, we highlight the importance of using the correct arrival-time histogram model when analyzing photon-number assignment. Using exponentially modified Gaussian distributions, instead of the commonly used Gaussian distributions, we can more accurately determine photon-number misidentification probabilities. Finally, we reconstruct the positive operator-valued measures of the detector, revealing sharp features that indicate the intrinsic PNR capabilities.</jats:p>"}],"publication":"APL Quantum","language":[{"iso":"eng"}],"year":"2026","issue":"1","title":"Practical considerations for assignment of photon numbers with SNSPDs","date_created":"2026-01-05T10:00:58Z","publisher":"AIP Publishing"},{"abstract":[{"lang":"eng","text":"<jats:p>\r\n                    We provide experimental validation of tight entropic uncertainty relations for the Shannon entropies of observables with mutually unbiased eigenstates in high dimensions. In particular, we address the cases of dimensions\r\n                    <a:math xmlns:a=\"http://www.w3.org/1998/Math/MathML\">\r\n                      <a:mrow>\r\n                        <a:mi>d</a:mi>\r\n                        <a:mo>=</a:mo>\r\n                        <a:mn>3</a:mn>\r\n                      </a:mrow>\r\n                    </a:math>\r\n                    , 4, and 5 and consider from 2 to\r\n                    <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\">\r\n                      <b:mrow>\r\n                        <b:mi>d</b:mi>\r\n                        <b:mo>+</b:mo>\r\n                        <b:mn>1</b:mn>\r\n                      </b:mrow>\r\n                    </b:math>\r\n                    mutually unbiased bases. The experiment is based on pulsed frequency bins measured with a multioutput quantum pulse gate, which can perform projective measurements on a complete high-dimensional basis in the time-frequency domain. Our results fit the theoretical predictions: the bound on the sum of the entropies is never violated and is saturated by the states that minimize the uncertainty relations.\r\n                  </jats:p>"}],"status":"public","type":"journal_article","publication":"Physical Review A","article_number":"032420","language":[{"iso":"eng"}],"_id":"65095","user_id":"27150","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"year":"2026","citation":{"chicago":"Serino, Laura Maria, Giovanni Chesi, Benjamin Brecht, Lorenzo Maccone, Chiara Macchiavello, and Christine Silberhorn. “Experimental Entropic Uncertainty Relations in Dimensions Three to Five.” <i>Physical Review A</i> 113, no. 3 (2026). <a href=\"https://doi.org/10.1103/f6c4-jtlc\">https://doi.org/10.1103/f6c4-jtlc</a>.","ieee":"L. M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, and C. Silberhorn, “Experimental entropic uncertainty relations in dimensions three to five,” <i>Physical Review A</i>, vol. 113, no. 3, Art. no. 032420, 2026, doi: <a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>.","bibtex":"@article{Serino_Chesi_Brecht_Maccone_Macchiavello_Silberhorn_2026, title={Experimental entropic uncertainty relations in dimensions three to five}, volume={113}, DOI={<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>}, number={3032420}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Serino, Laura Maria and Chesi, Giovanni and Brecht, Benjamin and Maccone, Lorenzo and Macchiavello, Chiara and Silberhorn, Christine}, year={2026} }","short":"L.M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, C. Silberhorn, Physical Review A 113 (2026).","mla":"Serino, Laura Maria, et al. “Experimental Entropic Uncertainty Relations in Dimensions Three to Five.” <i>Physical Review A</i>, vol. 113, no. 3, 032420, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>.","ama":"Serino LM, Chesi G, Brecht B, Maccone L, Macchiavello C, Silberhorn C. Experimental entropic uncertainty relations in dimensions three to five. <i>Physical Review A</i>. 2026;113(3). doi:<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>","apa":"Serino, L. M., Chesi, G., Brecht, B., Maccone, L., Macchiavello, C., &#38; Silberhorn, C. (2026). Experimental entropic uncertainty relations in dimensions three to five. <i>Physical Review A</i>, <i>113</i>(3), Article 032420. <a href=\"https://doi.org/10.1103/f6c4-jtlc\">https://doi.org/10.1103/f6c4-jtlc</a>"},"intvolume":"       113","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"issue":"3","title":"Experimental entropic uncertainty relations in dimensions three to five","doi":"10.1103/f6c4-jtlc","date_updated":"2026-03-25T07:59:36Z","publisher":"American Physical Society (APS)","date_created":"2026-03-23T12:29:23Z","author":[{"full_name":"Serino, Laura Maria","id":"88242","last_name":"Serino","first_name":"Laura Maria"},{"full_name":"Chesi, Giovanni","last_name":"Chesi","first_name":"Giovanni"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Lorenzo","full_name":"Maccone, Lorenzo","last_name":"Maccone"},{"full_name":"Macchiavello, Chiara","last_name":"Macchiavello","first_name":"Chiara"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"volume":113},{"publication":"Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics","type":"conference","status":"public","_id":"60022","project":[{"grant_number":"231447078","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A09: TRR 142 - Erzeugung von Drei-Photonen-Zuständen mit On-Chip Pumplichtunterdrückung in topologischen Wellenleitern (A09*)","_id":"164","grant_number":"231447078"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"user_id":"30525","language":[{"iso":"eng"}],"year":"2025","citation":{"bibtex":"@inproceedings{Brauckmann_Narvaez Castaneda_Siebert_Brecht_Förstner_Zentgraf_2025, title={Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators}, booktitle={Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics}, author={Brauckmann, Michael and Narvaez Castaneda, Emmanuel and Siebert, Dustin and Brecht, Benjamin and Förstner, Jens and Zentgraf, Thomas}, year={2025} }","mla":"Brauckmann, Michael, et al. “Enhancement Of Light-Matter Interaction In Topological Waveguides And Resonators.” <i>Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>, 2025.","short":"M. Brauckmann, E. Narvaez Castaneda, D. Siebert, B. Brecht, J. Förstner, T. Zentgraf, in: Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2025.","apa":"Brauckmann, M., Narvaez Castaneda, E., Siebert, D., Brecht, B., Förstner, J., &#38; Zentgraf, T. (2025). Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators. <i>Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>. META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain.","chicago":"Brauckmann, Michael, Emmanuel Narvaez Castaneda, Dustin Siebert, Benjamin Brecht, Jens Förstner, and Thomas Zentgraf. “Enhancement Of Light-Matter Interaction In Topological Waveguides And Resonators.” In <i>Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>, 2025.","ieee":"M. Brauckmann, E. Narvaez Castaneda, D. Siebert, B. Brecht, J. Förstner, and T. Zentgraf, “Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators,” presented at the META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain, 2025.","ama":"Brauckmann M, Narvaez Castaneda E, Siebert D, Brecht B, Förstner J, Zentgraf T. Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators. In: <i>Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>. ; 2025."},"date_updated":"2025-05-23T06:11:20Z","author":[{"full_name":"Brauckmann, Michael","last_name":"Brauckmann","first_name":"Michael"},{"first_name":"Emmanuel","full_name":"Narvaez Castaneda, Emmanuel","last_name":"Narvaez Castaneda"},{"full_name":"Siebert, Dustin","last_name":"Siebert","first_name":"Dustin"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"},{"orcid":"0000-0002-8662-1101","last_name":"Zentgraf","id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas"}],"date_created":"2025-05-23T06:10:53Z","title":"Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators","conference":{"start_date":"2025-07-22","name":"META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics","location":"Malaga, Spain","end_date":"2025-07-25"}},{"publication_status":"published","citation":{"ieee":"T. Schapeler, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, and T. Bartley, “Optimizing photon-number resolution with superconducting nanowire multi-photon detectors,” in <i>Advanced Photon Counting Techniques XIX</i>, 2025, doi: <a href=\"https://doi.org/10.1117/12.3054905\">10.1117/12.3054905</a>.","chicago":"Schapeler, Timon, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Optimizing Photon-Number Resolution with Superconducting Nanowire Multi-Photon Detectors.” In <i>Advanced Photon Counting Techniques XIX</i>, edited by Mark A. Itzler, K. Alex McIntosh, and Joshua C. Bienfang. SPIE, 2025. <a href=\"https://doi.org/10.1117/12.3054905\">https://doi.org/10.1117/12.3054905</a>.","ama":"Schapeler T, Schlue F, Stefszky M, Brecht B, Silberhorn C, Bartley T. Optimizing photon-number resolution with superconducting nanowire multi-photon detectors. In: Itzler MA, McIntosh KA, Bienfang JC, eds. <i>Advanced Photon Counting Techniques XIX</i>. SPIE; 2025. doi:<a href=\"https://doi.org/10.1117/12.3054905\">10.1117/12.3054905</a>","apa":"Schapeler, T., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2025). Optimizing photon-number resolution with superconducting nanowire multi-photon detectors. In M. A. Itzler, K. A. McIntosh, &#38; J. C. Bienfang (Eds.), <i>Advanced Photon Counting Techniques XIX</i>. SPIE. <a href=\"https://doi.org/10.1117/12.3054905\">https://doi.org/10.1117/12.3054905</a>","mla":"Schapeler, Timon, et al. “Optimizing Photon-Number Resolution with Superconducting Nanowire Multi-Photon Detectors.” <i>Advanced Photon Counting Techniques XIX</i>, edited by Mark A. Itzler et al., SPIE, 2025, doi:<a href=\"https://doi.org/10.1117/12.3054905\">10.1117/12.3054905</a>.","bibtex":"@inproceedings{Schapeler_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2025, title={Optimizing photon-number resolution with superconducting nanowire multi-photon detectors}, DOI={<a href=\"https://doi.org/10.1117/12.3054905\">10.1117/12.3054905</a>}, booktitle={Advanced Photon Counting Techniques XIX}, publisher={SPIE}, author={Schapeler, Timon and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, editor={Itzler, Mark A. and McIntosh, K. Alex and Bienfang, Joshua C.}, year={2025} }","short":"T. Schapeler, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, in: M.A. Itzler, K.A. McIntosh, J.C. Bienfang (Eds.), Advanced Photon Counting Techniques XIX, SPIE, 2025."},"year":"2025","date_created":"2025-07-11T09:18:09Z","author":[{"first_name":"Timon","last_name":"Schapeler","orcid":"0000-0001-7652-1716","id":"55629","full_name":"Schapeler, Timon"},{"first_name":"Fabian","id":"63579","full_name":"Schlue, Fabian","last_name":"Schlue"},{"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","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"full_name":"Bartley, Tim","id":"49683","last_name":"Bartley","first_name":"Tim"}],"date_updated":"2025-07-11T09:22:11Z","publisher":"SPIE","doi":"10.1117/12.3054905","title":"Optimizing photon-number resolution with superconducting nanowire multi-photon detectors","publication":"Advanced Photon Counting Techniques XIX","type":"conference","status":"public","editor":[{"first_name":"Mark A.","full_name":"Itzler, Mark A.","last_name":"Itzler"},{"first_name":"K. Alex","last_name":"McIntosh","full_name":"McIntosh, K. Alex"},{"first_name":"Joshua C.","last_name":"Bienfang","full_name":"Bienfang, Joshua C."}],"department":[{"_id":"15"},{"_id":"623"}],"user_id":"55629","_id":"60587","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","name":"PhoQuant--QCTest: PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"}],"language":[{"iso":"eng"}]},{"status":"public","type":"journal_article","article_type":"original","article_number":"086113","user_id":"55629","department":[{"_id":"623"},{"_id":"15"}],"project":[{"name":"PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"},{"_id":"239","name":"ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications"}],"_id":"61110","citation":{"ama":"Sidorova M, Schapeler T, Semenov AD, et al. Jitter in photon-number-resolved detection by superconducting nanowires. <i>APL Photonics</i>. 2025;10(8). doi:<a href=\"https://doi.org/10.1063/5.0273752\">10.1063/5.0273752</a>","chicago":"Sidorova, Mariia, Timon Schapeler, Alexej D. Semenov, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Jitter in Photon-Number-Resolved Detection by Superconducting Nanowires.” <i>APL Photonics</i> 10, no. 8 (2025). <a href=\"https://doi.org/10.1063/5.0273752\">https://doi.org/10.1063/5.0273752</a>.","ieee":"M. Sidorova <i>et al.</i>, “Jitter in photon-number-resolved detection by superconducting nanowires,” <i>APL Photonics</i>, vol. 10, no. 8, Art. no. 086113, 2025, doi: <a href=\"https://doi.org/10.1063/5.0273752\">10.1063/5.0273752</a>.","bibtex":"@article{Sidorova_Schapeler_Semenov_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2025, title={Jitter in photon-number-resolved detection by superconducting nanowires}, volume={10}, DOI={<a href=\"https://doi.org/10.1063/5.0273752\">10.1063/5.0273752</a>}, number={8086113}, journal={APL Photonics}, publisher={AIP Publishing}, author={Sidorova, Mariia and Schapeler, Timon and Semenov, Alexej D. and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, year={2025} }","short":"M. Sidorova, T. Schapeler, A.D. Semenov, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, APL Photonics 10 (2025).","mla":"Sidorova, Mariia, et al. “Jitter in Photon-Number-Resolved Detection by Superconducting Nanowires.” <i>APL Photonics</i>, vol. 10, no. 8, 086113, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0273752\">10.1063/5.0273752</a>.","apa":"Sidorova, M., Schapeler, T., Semenov, A. D., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2025). Jitter in photon-number-resolved detection by superconducting nanowires. <i>APL Photonics</i>, <i>10</i>(8), Article 086113. <a href=\"https://doi.org/10.1063/5.0273752\">https://doi.org/10.1063/5.0273752</a>"},"intvolume":"        10","publication_status":"published","publication_identifier":{"issn":["2378-0967"]},"main_file_link":[{"open_access":"1"}],"doi":"10.1063/5.0273752","author":[{"last_name":"Sidorova","full_name":"Sidorova, Mariia","first_name":"Mariia"},{"orcid":"0000-0001-7652-1716","last_name":"Schapeler","id":"55629","full_name":"Schapeler, Timon","first_name":"Timon"},{"first_name":"Alexej D.","full_name":"Semenov, Alexej D.","last_name":"Semenov"},{"first_name":"Fabian","last_name":"Schlue","id":"63579","full_name":"Schlue, Fabian"},{"first_name":"Michael","last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777"},{"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","id":"49683","full_name":"Bartley, Tim","last_name":"Bartley"}],"volume":10,"date_updated":"2025-09-02T10:47:08Z","oa":"1","abstract":[{"lang":"eng","text":"<jats:p>By analyzing the physics of multi-photon absorption in superconducting nanowire single-photon detectors (SNSPDs), we identify physical components of jitter. From this, we formulate a quantitative physical model of the multi-photon detector response that combines the local detection mechanism and local fluctuations (hotspot formation and intrinsic jitter) with the thermoelectric dynamics of resistive domains. Our model provides an excellent description of the arrival-time histogram of a commercial SNSPD across several orders of magnitude, both in arrival-time probability and across mean photon number. This is achieved with just three fitting parameters: the scaling of the mean arrival time of voltage response pulses, as well as the Gaussian and exponential jitter components. Our findings have important implications for photon-number-resolving detector design, as well as applications requiring low jitter, such as light detection and ranging (LIDAR).</jats:p>"}],"publication":"APL Photonics","language":[{"iso":"eng"}],"keyword":["Jitter","PNR","SNSPD"],"external_id":{"arxiv":["arXiv:2503.17146"]},"year":"2025","issue":"8","title":"Jitter in photon-number-resolved detection by superconducting nanowires","date_created":"2025-09-01T11:12:19Z","publisher":"AIP Publishing"},{"ipn":"DE102023212604B3","title":"Optisch basierter Digital-Analog-Umsetzer","author":[{"first_name":"Stephan","full_name":"Kruse, Stephan","id":"38254","last_name":"Kruse"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"full_name":"Schwabe, Tobias","id":"39217","last_name":"Schwabe","first_name":"Tobias"}],"date_created":"2025-11-27T07:00:50Z","ipc":"H03M 1/66","date_updated":"2025-11-27T07:07:16Z","citation":{"apa":"Kruse, S., Silberhorn, C., Brecht, B., &#38; Schwabe, T. (2025). <i>Optisch basierter Digital-Analog-Umsetzer</i>.","mla":"Kruse, Stephan, et al. <i>Optisch Basierter Digital-Analog-Umsetzer</i>. 2025.","bibtex":"@article{Kruse_Silberhorn_Brecht_Schwabe_2025, title={Optisch basierter Digital-Analog-Umsetzer}, author={Kruse, Stephan and Silberhorn, Christine and Brecht, Benjamin and Schwabe, Tobias}, year={2025} }","short":"S. Kruse, C. Silberhorn, B. Brecht, T. Schwabe, (2025).","ama":"Kruse S, Silberhorn C, Brecht B, Schwabe T. Optisch basierter Digital-Analog-Umsetzer. Published online 2025.","chicago":"Kruse, Stephan, Christine Silberhorn, Benjamin Brecht, and Tobias Schwabe. “Optisch Basierter Digital-Analog-Umsetzer,” 2025.","ieee":"S. Kruse, C. Silberhorn, B. Brecht, and T. Schwabe, “Optisch basierter Digital-Analog-Umsetzer.” 2025."},"year":"2025","department":[{"_id":"58"},{"_id":"623"},{"_id":"288"}],"user_id":"38254","_id":"62639","publication_date":"2025-01-23","status":"public","type":"patent"},{"article_type":"original","article_number":"033152","language":[{"iso":"eng"}],"_id":"63213","user_id":"27150","department":[{"_id":"15"},{"_id":"623"}],"abstract":[{"lang":"eng","text":"<jats:p>Quantum uncertainty relations impose fundamental limits on the joint knowledge that can be acquired from complementary observables: Perfect knowledge of a quantum state in one basis implies maximal indetermination in all other mutually unbiased bases (MUBs). Uncertainty relations derived from joint properties of the MUBs are generally assumed to be uniform, irrespective of the specific observables chosen within a set. In this work, we demonstrate instead that the uncertainty relations can depend on the choice of observables. Through both experimental observation and numerical methods, we show that selecting different sets of three MUBs in a five-dimensional quantum system results in distinct uncertainty bounds, i.e., in varying degrees of complementarity, in terms of both entropy and variance.</jats:p>"}],"status":"public","type":"journal_article","publication":"Physical Review Research","title":"Complementarity-based complementarity: The choice of mutually unbiased observables shapes quantum uncertainty relations","doi":"10.1103/v24q-sl6n","publisher":"American Physical Society (APS)","date_updated":"2025-12-18T16:05:45Z","author":[{"last_name":"Serino","id":"88242","full_name":"Serino, Laura Maria","first_name":"Laura Maria"},{"full_name":"Chesi, Giovanni","last_name":"Chesi","first_name":"Giovanni"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"last_name":"Maccone","full_name":"Maccone, Lorenzo","first_name":"Lorenzo"},{"first_name":"Chiara","full_name":"Macchiavello, Chiara","last_name":"Macchiavello"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"date_created":"2025-12-18T16:04:45Z","volume":7,"year":"2025","citation":{"ieee":"L. M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, and C. Silberhorn, “Complementarity-based complementarity: The choice of mutually unbiased observables shapes quantum uncertainty relations,” <i>Physical Review Research</i>, vol. 7, no. 3, Art. no. 033152, 2025, doi: <a href=\"https://doi.org/10.1103/v24q-sl6n\">10.1103/v24q-sl6n</a>.","chicago":"Serino, Laura Maria, Giovanni Chesi, Benjamin Brecht, Lorenzo Maccone, Chiara Macchiavello, and Christine Silberhorn. “Complementarity-Based Complementarity: The Choice of Mutually Unbiased Observables Shapes Quantum Uncertainty Relations.” <i>Physical Review Research</i> 7, no. 3 (2025). <a href=\"https://doi.org/10.1103/v24q-sl6n\">https://doi.org/10.1103/v24q-sl6n</a>.","ama":"Serino LM, Chesi G, Brecht B, Maccone L, Macchiavello C, Silberhorn C. Complementarity-based complementarity: The choice of mutually unbiased observables shapes quantum uncertainty relations. <i>Physical Review Research</i>. 2025;7(3). doi:<a href=\"https://doi.org/10.1103/v24q-sl6n\">10.1103/v24q-sl6n</a>","mla":"Serino, Laura Maria, et al. “Complementarity-Based Complementarity: The Choice of Mutually Unbiased Observables Shapes Quantum Uncertainty Relations.” <i>Physical Review Research</i>, vol. 7, no. 3, 033152, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/v24q-sl6n\">10.1103/v24q-sl6n</a>.","bibtex":"@article{Serino_Chesi_Brecht_Maccone_Macchiavello_Silberhorn_2025, title={Complementarity-based complementarity: The choice of mutually unbiased observables shapes quantum uncertainty relations}, volume={7}, DOI={<a href=\"https://doi.org/10.1103/v24q-sl6n\">10.1103/v24q-sl6n</a>}, number={3033152}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Serino, Laura Maria and Chesi, Giovanni and Brecht, Benjamin and Maccone, Lorenzo and Macchiavello, Chiara and Silberhorn, Christine}, year={2025} }","short":"L.M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, C. Silberhorn, Physical Review Research 7 (2025).","apa":"Serino, L. M., Chesi, G., Brecht, B., Maccone, L., Macchiavello, C., &#38; Silberhorn, C. (2025). Complementarity-based complementarity: The choice of mutually unbiased observables shapes quantum uncertainty relations. <i>Physical Review Research</i>, <i>7</i>(3), Article 033152. <a href=\"https://doi.org/10.1103/v24q-sl6n\">https://doi.org/10.1103/v24q-sl6n</a>"},"intvolume":"         7","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"issue":"3"},{"department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","_id":"63214","language":[{"iso":"eng"}],"article_number":"023703","publication":"Physical Review A","type":"journal_article","status":"public","abstract":[{"text":"<jats:p>We study a possibility of measuring the time-resolved second-order autocorrelation function of one of two beams generated in type-II parametric down-conversion by means of temporal magnification of this beam, bringing its correlation time from the picosecond to the nanosecond scale, which can be resolved by modern photodetectors. We show that such a measurement enables one to infer directly the degree of global coherence of that beam, which is linked by a simple relation to the number of modes characterizing the entanglement between the two generated beams. We illustrate the proposed method by an example of photon pairs generated in a periodically poled potassium titanyl phosphate (KTP) crystal with a symmetric group velocity matching for various durations of the pump pulse, resulting in different numbers of modes. Our theoretical model also shows that the magnified double-heralded autocorrelation function of one beam exhibits a local maximum around zero delay time, corresponding to photon bunching at a short time scale.</jats:p>","lang":"eng"}],"volume":112,"date_created":"2025-12-18T16:06:13Z","author":[{"first_name":"Dmitri B.","full_name":"Horoshko, Dmitri B.","last_name":"Horoshko"},{"first_name":"Shivang","full_name":"Srivastava, Shivang","last_name":"Srivastava"},{"full_name":"Sośnicki, Filip","last_name":"Sośnicki","first_name":"Filip"},{"full_name":"Mikołajczyk, Michał","last_name":"Mikołajczyk","first_name":"Michał"},{"full_name":"Karpiński, Michał","last_name":"Karpiński","first_name":"Michał"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"full_name":"Kolobov, Mikhail I.","last_name":"Kolobov","first_name":"Mikhail I."}],"date_updated":"2025-12-18T16:06:34Z","publisher":"American Physical Society (APS)","doi":"10.1103/7ckm-tm3r","title":"Time-resolved second-order autocorrelation function of parametric down-conversion","issue":"2","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","intvolume":"       112","citation":{"chicago":"Horoshko, Dmitri B., Shivang Srivastava, Filip Sośnicki, Michał Mikołajczyk, Michał Karpiński, Benjamin Brecht, and Mikhail I. Kolobov. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i> 112, no. 2 (2025). <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>.","ieee":"D. B. Horoshko <i>et al.</i>, “Time-resolved second-order autocorrelation function of parametric down-conversion,” <i>Physical Review A</i>, vol. 112, no. 2, Art. no. 023703, 2025, doi: <a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>.","ama":"Horoshko DB, Srivastava S, Sośnicki F, et al. Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>. 2025;112(2). doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>","apa":"Horoshko, D. B., Srivastava, S., Sośnicki, F., Mikołajczyk, M., Karpiński, M., Brecht, B., &#38; Kolobov, M. I. (2025). Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>, <i>112</i>(2), Article 023703. <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>","bibtex":"@article{Horoshko_Srivastava_Sośnicki_Mikołajczyk_Karpiński_Brecht_Kolobov_2025, title={Time-resolved second-order autocorrelation function of parametric down-conversion}, volume={112}, DOI={<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>}, number={2023703}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Horoshko, Dmitri B. and Srivastava, Shivang and Sośnicki, Filip and Mikołajczyk, Michał and Karpiński, Michał and Brecht, Benjamin and Kolobov, Mikhail I.}, year={2025} }","short":"D.B. Horoshko, S. Srivastava, F. Sośnicki, M. Mikołajczyk, M. Karpiński, B. Brecht, M.I. Kolobov, Physical Review A 112 (2025).","mla":"Horoshko, Dmitri B., et al. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i>, vol. 112, no. 2, 023703, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>."},"year":"2025"},{"department":[{"_id":"15"},{"_id":"623"}],"user_id":"27150","_id":"63215","language":[{"iso":"eng"}],"article_number":"025024","publication":"Quantum Science and Technology","type":"journal_article","status":"public","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>High-dimensional time-frequency encodings have the potential to significantly advance quantum information science; however, practical applications require precise knowledge of the encoded quantum states, which becomes increasingly challenging for larger Hilbert spaces. Self-guided tomography (SGT) has emerged as a practical and scalable technique for this purpose in the spatial domain. Here, we apply SGT to estimate time-frequency states using a multi-output quantum pulse gate. We achieve fidelities of more than 99% for 3- and 5-dimensional states without the need for calibration or post-processing. We demonstrate the robustness of SGT against statistical and environmental noise, highlighting its efficacy in the photon-starved regime typical of quantum information applications.</jats:p>","lang":"eng"}],"volume":10,"author":[{"last_name":"Serino","id":"88242","full_name":"Serino, Laura Maria","first_name":"Laura Maria"},{"last_name":"Rambach","full_name":"Rambach, Markus","first_name":"Markus"},{"full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"full_name":"Romero, Jacquiline","last_name":"Romero","first_name":"Jacquiline"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"date_created":"2025-12-18T16:07:11Z","publisher":"IOP Publishing","date_updated":"2025-12-18T16:07:35Z","doi":"10.1088/2058-9565/adb0ea","title":"Self-guided tomography of time-frequency qudits","issue":"2","publication_identifier":{"issn":["2058-9565"]},"publication_status":"published","intvolume":"        10","citation":{"apa":"Serino, L. M., Rambach, M., Brecht, B., Romero, J., &#38; Silberhorn, C. (2025). Self-guided tomography of time-frequency qudits. <i>Quantum Science and Technology</i>, <i>10</i>(2), Article 025024. <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">https://doi.org/10.1088/2058-9565/adb0ea</a>","mla":"Serino, Laura Maria, et al. “Self-Guided Tomography of Time-Frequency Qudits.” <i>Quantum Science and Technology</i>, vol. 10, no. 2, 025024, IOP Publishing, 2025, doi:<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>.","short":"L.M. Serino, M. Rambach, B. Brecht, J. Romero, C. Silberhorn, Quantum Science and Technology 10 (2025).","bibtex":"@article{Serino_Rambach_Brecht_Romero_Silberhorn_2025, title={Self-guided tomography of time-frequency qudits}, volume={10}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>}, number={2025024}, journal={Quantum Science and Technology}, publisher={IOP Publishing}, author={Serino, Laura Maria and Rambach, Markus and Brecht, Benjamin and Romero, Jacquiline and Silberhorn, Christine}, year={2025} }","ama":"Serino LM, Rambach M, Brecht B, Romero J, Silberhorn C. Self-guided tomography of time-frequency qudits. <i>Quantum Science and Technology</i>. 2025;10(2). doi:<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>","ieee":"L. M. Serino, M. Rambach, B. Brecht, J. Romero, and C. Silberhorn, “Self-guided tomography of time-frequency qudits,” <i>Quantum Science and Technology</i>, vol. 10, no. 2, Art. no. 025024, 2025, doi: <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>.","chicago":"Serino, Laura Maria, Markus Rambach, Benjamin Brecht, Jacquiline Romero, and Christine Silberhorn. “Self-Guided Tomography of Time-Frequency Qudits.” <i>Quantum Science and Technology</i> 10, no. 2 (2025). <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">https://doi.org/10.1088/2058-9565/adb0ea</a>."},"year":"2025"},{"main_file_link":[{"open_access":"1","url":"https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729"}],"doi":"10.1364/oe.571605","author":[{"orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","full_name":"Babel, Silia","id":"63231","first_name":"Silia"},{"first_name":"Laura","id":"61375","full_name":"Bollmers, Laura","last_name":"Bollmers"},{"first_name":"Franz","last_name":"Roeder","full_name":"Roeder, Franz","id":"88149"},{"last_name":"Ridder","id":"63574","full_name":"Ridder, Werner","first_name":"Werner"},{"first_name":"Christian","last_name":"Golla","full_name":"Golla, Christian","id":"40420"},{"first_name":"Ronja","full_name":"Köthemann, Ronja","last_name":"Köthemann"},{"first_name":"Bernhard","last_name":"Reineke","full_name":"Reineke, Bernhard","id":"29821"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150","first_name":"Benjamin"},{"id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"volume":33,"oa":"1","date_updated":"2026-01-07T11:28:35Z","citation":{"bibtex":"@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et al._2025, title={Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>}, number={2552729}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin and Eigner, Christof and et al.}, year={2025} }","short":"S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke, H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33 (2025).","mla":"Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i>, vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","apa":"Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R., Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., &#38; Silberhorn, C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>, <i>33</i>(25), Article 52729. <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>","ieee":"S. Babel <i>et al.</i>, “Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths,” <i>Optics Express</i>, vol. 33, no. 25, Art. no. 52729, 2025, doi: <a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","chicago":"Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla, Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i> 33, no. 25 (2025). <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>.","ama":"Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>. 2025;33(25). doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>"},"intvolume":"        33","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"article_type":"original","article_number":"52729","user_id":"63231","department":[{"_id":"288"},{"_id":"623"}],"_id":"63091","status":"public","type":"journal_article","title":"Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths","date_created":"2025-12-15T07:20:36Z","publisher":"Optica Publishing Group","year":"2025","issue":"25","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"We present the design and characterization of a guided-wave, bright, and highly frequency non-degenerate parametric down-conversion (PDC) source in thin-film lithium niobate. The source generates photon pairs with wavelengths of 815 nm and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths. We confirm the high quality of the generated single photons by determining a value for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3). Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which is two orders of magnitude higher than sources based on weakly guiding waveguides. The shape of the PDC spectrum and the strong agreement between the effective and nominal bandwidth highlight our high fabrication quality of periodically poled waveguides. The good agreement between the measured and simulated spectral characteristics of our source demonstrates our excellent understanding of the PDC process. Our result is a valuable step towards practical and scalable quantum communication networks as well as photonic quantum computing."}],"publication":"Optics Express"},{"year":"2025","intvolume":"       112","citation":{"ama":"Horoshko DB, Srivastava S, Sośnicki FM, et al. Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>. 2025;112(2). doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>","chicago":"Horoshko, Dmitri B., Shivang Srivastava, Filip Maksymilian Sośnicki, Michał Mikołajczyk, Michał Karpiński, Benjamin Brecht, and Mikhail I. Kolobov. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i> 112, no. 2 (2025). <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>.","ieee":"D. B. Horoshko <i>et al.</i>, “Time-resolved second-order autocorrelation function of parametric down-conversion,” <i>Physical Review A</i>, vol. 112, no. 2, Art. no. 023703, 2025, doi: <a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>.","apa":"Horoshko, D. B., Srivastava, S., Sośnicki, F. M., Mikołajczyk, M., Karpiński, M., Brecht, B., &#38; Kolobov, M. I. (2025). Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>, <i>112</i>(2), Article 023703. <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>","bibtex":"@article{Horoshko_Srivastava_Sośnicki_Mikołajczyk_Karpiński_Brecht_Kolobov_2025, title={Time-resolved second-order autocorrelation function of parametric down-conversion}, volume={112}, DOI={<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>}, number={2023703}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Horoshko, Dmitri B. and Srivastava, Shivang and Sośnicki, Filip Maksymilian and Mikołajczyk, Michał and Karpiński, Michał and Brecht, Benjamin and Kolobov, Mikhail I.}, year={2025} }","mla":"Horoshko, Dmitri B., et al. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i>, vol. 112, no. 2, 023703, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>.","short":"D.B. Horoshko, S. Srivastava, F.M. Sośnicki, M. Mikołajczyk, M. Karpiński, B. Brecht, M.I. Kolobov, Physical Review A 112 (2025)."},"publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","issue":"2","title":"Time-resolved second-order autocorrelation function of parametric down-conversion","doi":"10.1103/7ckm-tm3r","publisher":"American Physical Society (APS)","date_updated":"2026-03-25T07:59:53Z","volume":112,"date_created":"2026-01-26T14:28:22Z","author":[{"last_name":"Horoshko","full_name":"Horoshko, Dmitri B.","first_name":"Dmitri B."},{"full_name":"Srivastava, Shivang","last_name":"Srivastava","first_name":"Shivang"},{"first_name":"Filip Maksymilian","id":"106751","full_name":"Sośnicki, Filip Maksymilian","orcid":"0000-0002-2465-4645","last_name":"Sośnicki"},{"first_name":"Michał","last_name":"Mikołajczyk","full_name":"Mikołajczyk, Michał"},{"full_name":"Karpiński, Michał","last_name":"Karpiński","first_name":"Michał"},{"full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Mikhail I.","last_name":"Kolobov","full_name":"Kolobov, Mikhail I."}],"abstract":[{"lang":"eng","text":"<jats:p>We study a possibility of measuring the time-resolved second-order autocorrelation function of one of two beams generated in type-II parametric down-conversion by means of temporal magnification of this beam, bringing its correlation time from the picosecond to the nanosecond scale, which can be resolved by modern photodetectors. We show that such a measurement enables one to infer directly the degree of global coherence of that beam, which is linked by a simple relation to the number of modes characterizing the entanglement between the two generated beams. We illustrate the proposed method by an example of photon pairs generated in a periodically poled potassium titanyl phosphate (KTP) crystal with a symmetric group velocity matching for various durations of the pump pulse, resulting in different numbers of modes. Our theoretical model also shows that the magnified double-heralded autocorrelation function of one beam exhibits a local maximum around zero delay time, corresponding to photon bunching at a short time scale.</jats:p>"}],"status":"public","publication":"Physical Review A","type":"journal_article","article_number":"023703","language":[{"iso":"eng"}],"_id":"63733","department":[{"_id":"623"},{"_id":"15"},{"_id":"288"}],"user_id":"27150"},{"department":[{"_id":"288"},{"_id":"623"}],"user_id":"88149","_id":"54544","project":[{"_id":"207","name":"MiLiQuant: Miniaturisierte Lichtquellen für den industriellen Einsatz in Quantensensoren und Quanten-Imaging-Systemen (MiLiQuant) - Teilvorhaben: Technologie und Theorie für MIR Quanten-Imaging Systeme","grant_number":"13N15065"},{"name":"MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing","_id":"571","grant_number":"101070700"},{"_id":"190","name":"E2TPA: Exploiting Entangled Two-Photon Absorption"}],"language":[{"iso":"eng"}],"article_number":"020350","publication":"PRX Quantum","type":"journal_article","status":"public","abstract":[{"lang":"eng","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."}],"volume":5,"author":[{"last_name":"Roeder","full_name":"Roeder, Franz","id":"88149","first_name":"Franz"},{"last_name":"Pollmann","id":"78890","full_name":"Pollmann, René","first_name":"René"},{"first_name":"Michael","id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky"},{"full_name":"Santandrea, Matteo","id":"55095","last_name":"Santandrea","orcid":"0000-0001-5718-358X","first_name":"Matteo"},{"first_name":"Kai Hong","id":"36389","full_name":"Luo, Kai Hong","orcid":"0000-0003-1008-4976","last_name":"Luo"},{"first_name":"V.","full_name":"Quiring, V.","last_name":"Quiring"},{"full_name":"Ricken, Raimund","last_name":"Ricken","first_name":"Raimund"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2024-06-01T12:48:51Z","date_updated":"2024-06-01T13:00:53Z","publisher":"American Physical Society (APS)","doi":"10.1103/prxquantum.5.020350","title":"Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer","issue":"2","publication_identifier":{"issn":["2691-3399"]},"publication_status":"published","intvolume":"         5","citation":{"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).","mla":"Roeder, Franz, et al. “Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer.” <i>PRX Quantum</i>, vol. 5, no. 2, 020350, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/prxquantum.5.020350\">10.1103/prxquantum.5.020350</a>.","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={<a href=\"https://doi.org/10.1103/prxquantum.5.020350\">10.1103/prxquantum.5.020350</a>}, 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} }","apa":"Roeder, F., Pollmann, R., Stefszky, M., Santandrea, M., Luo, K. H., Quiring, V., Ricken, R., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2024). Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer. <i>PRX Quantum</i>, <i>5</i>(2), Article 020350. <a href=\"https://doi.org/10.1103/prxquantum.5.020350\">https://doi.org/10.1103/prxquantum.5.020350</a>","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. <i>PRX Quantum</i>. 2024;5(2). doi:<a href=\"https://doi.org/10.1103/prxquantum.5.020350\">10.1103/prxquantum.5.020350</a>","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.” <i>PRX Quantum</i> 5, no. 2 (2024). <a href=\"https://doi.org/10.1103/prxquantum.5.020350\">https://doi.org/10.1103/prxquantum.5.020350</a>.","ieee":"F. Roeder <i>et al.</i>, “Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer,” <i>PRX Quantum</i>, vol. 5, no. 2, Art. no. 020350, 2024, doi: <a href=\"https://doi.org/10.1103/prxquantum.5.020350\">10.1103/prxquantum.5.020350</a>."},"year":"2024"},{"type":"journal_article","publication":"Physical Review Letters","status":"public","_id":"54812","user_id":"27150","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"article_number":"240802","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"issue":"24","year":"2024","citation":{"ieee":"L. T. Weinbrenner <i>et al.</i>, “Certifying the Topology of Quantum Networks: Theory and Experiment,” <i>Physical Review Letters</i>, vol. 132, no. 24, Art. no. 240802, 2024, doi: <a href=\"https://doi.org/10.1103/physrevlett.132.240802\">10.1103/physrevlett.132.240802</a>.","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.” <i>Physical Review Letters</i> 132, no. 24 (2024). <a href=\"https://doi.org/10.1103/physrevlett.132.240802\">https://doi.org/10.1103/physrevlett.132.240802</a>.","ama":"Weinbrenner LT, Prasannan N, Hansenne K, et al. Certifying the Topology of Quantum Networks: Theory and Experiment. <i>Physical Review Letters</i>. 2024;132(24). doi:<a href=\"https://doi.org/10.1103/physrevlett.132.240802\">10.1103/physrevlett.132.240802</a>","mla":"Weinbrenner, Lisa T., et al. “Certifying the Topology of Quantum Networks: Theory and Experiment.” <i>Physical Review Letters</i>, vol. 132, no. 24, 240802, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevlett.132.240802\">10.1103/physrevlett.132.240802</a>.","bibtex":"@article{Weinbrenner_Prasannan_Hansenne_Denker_Sperling_Brecht_Silberhorn_Gühne_2024, title={Certifying the Topology of Quantum Networks: Theory and Experiment}, volume={132}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.132.240802\">10.1103/physrevlett.132.240802</a>}, 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., &#38; Gühne, O. (2024). Certifying the Topology of Quantum Networks: Theory and Experiment. <i>Physical Review Letters</i>, <i>132</i>(24), Article 240802. <a href=\"https://doi.org/10.1103/physrevlett.132.240802\">https://doi.org/10.1103/physrevlett.132.240802</a>"},"intvolume":"       132","date_updated":"2024-06-19T06:59:45Z","publisher":"American Physical Society (APS)","date_created":"2024-06-19T06:36:54Z","author":[{"full_name":"Weinbrenner, Lisa T.","last_name":"Weinbrenner","first_name":"Lisa T."},{"full_name":"Prasannan, Nidhin","id":"71403","last_name":"Prasannan","first_name":"Nidhin"},{"first_name":"Kiara","full_name":"Hansenne, Kiara","last_name":"Hansenne"},{"last_name":"Denker","full_name":"Denker, Sophia","first_name":"Sophia"},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127","first_name":"Jan"},{"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":"Gühne, Otfried","last_name":"Gühne","first_name":"Otfried"}],"volume":132,"title":"Certifying the Topology of Quantum Networks: Theory and Experiment","doi":"10.1103/physrevlett.132.240802"},{"date_created":"2024-07-11T07:23:08Z","publisher":"American Physical Society (APS)","title":"Electrical trace analysis of superconducting nanowire photon-number-resolving detectors","issue":"1","year":"2024","language":[{"iso":"eng"}],"publication":"Physical Review Applied","abstract":[{"text":"<jats:p>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.</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"}],"author":[{"first_name":"Timon","id":"55629","full_name":"Schapeler, Timon","orcid":"0000-0001-7652-1716","last_name":"Schapeler"},{"first_name":"Niklas","last_name":"Lamberty","full_name":"Lamberty, Niklas"},{"first_name":"Thomas","orcid":"0000-0001-8627-2119","last_name":"Hummel","full_name":"Hummel, Thomas","id":"83846"},{"last_name":"Schlue","id":"63579","full_name":"Schlue, Fabian","first_name":"Fabian"},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"last_name":"Bartley","id":"49683","full_name":"Bartley, Tim","first_name":"Tim"}],"volume":22,"date_updated":"2024-07-11T09:36:00Z","oa":"1","main_file_link":[{"open_access":"1"}],"doi":"10.1103/physrevapplied.22.014024","publication_status":"published","publication_identifier":{"issn":["2331-7019"]},"citation":{"apa":"Schapeler, T., Lamberty, N., Hummel, T., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2024). Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. <i>Physical Review Applied</i>, <i>22</i>(1), Article 014024. <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">https://doi.org/10.1103/physrevapplied.22.014024</a>","mla":"Schapeler, Timon, et al. “Electrical Trace Analysis of Superconducting Nanowire Photon-Number-Resolving Detectors.” <i>Physical Review Applied</i>, vol. 22, no. 1, 014024, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>.","short":"T. Schapeler, N. Lamberty, T. Hummel, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, Physical Review Applied 22 (2024).","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={<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>}, 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} }","ama":"Schapeler T, Lamberty N, Hummel T, et al. Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. <i>Physical Review Applied</i>. 2024;22(1). doi:<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>","ieee":"T. Schapeler <i>et al.</i>, “Electrical trace analysis of superconducting nanowire photon-number-resolving detectors,” <i>Physical Review Applied</i>, vol. 22, no. 1, Art. no. 014024, 2024, doi: <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>.","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.” <i>Physical Review Applied</i> 22, no. 1 (2024). <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">https://doi.org/10.1103/physrevapplied.22.014024</a>."},"intvolume":"        22","user_id":"55629","department":[{"_id":"15"},{"_id":"623"}],"project":[{"_id":"239","name":"QuESADILLA: ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications","grant_number":"101042399","call_identifier":"ERC"},{"name":"PhoQuant--QCTest: PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191","grant_number":"13N16103"}],"_id":"55174","article_number":"014024","type":"journal_article","status":"public"},{"year":"2024","citation":{"mla":"Kruse, Stephan, et al. <i>Quantenoptisch-Unterstütztes Sende-/Empfangssystem</i>. 2024.","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} }","apa":"Kruse, S., Brecht, B., Silberhorn, C., &#38; Serino, L. M. (2024). <i>Quantenoptisch-unterstütztes Sende-/Empfangssystem</i>.","chicago":"Kruse, Stephan, Benjamin Brecht, Christine Silberhorn, and Laura Maria Serino. “Quantenoptisch-Unterstütztes Sende-/Empfangssystem,” 2024.","ieee":"S. Kruse, B. Brecht, C. Silberhorn, and L. M. Serino, “Quantenoptisch-unterstütztes Sende-/Empfangssystem.” 2024.","ama":"Kruse S, Brecht B, Silberhorn C, Serino LM. Quantenoptisch-unterstütztes Sende-/Empfangssystem. Published online 2024."},"ipc":"G01S 7/481","date_updated":"2024-11-15T13:58:41Z","author":[{"first_name":"Stephan","last_name":"Kruse","id":"38254","full_name":"Kruse, Stephan"},{"full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"id":"88242","full_name":"Serino, Laura Maria","last_name":"Serino","first_name":"Laura Maria"}],"date_created":"2024-11-14T16:11:10Z","title":"Quantenoptisch-unterstütztes Sende-/Empfangssystem","ipn":"10 2023 203 697.5","type":"patent","status":"public","_id":"57089","publication_date":"2024-10-24","department":[{"_id":"623"},{"_id":"58"}],"user_id":"38254"},{"status":"public","type":"journal_article","publication":"Physical Review A","language":[{"iso":"eng"}],"article_number":"023717","user_id":"75127","department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"429"},{"_id":"623"}],"_id":"57743","citation":{"mla":"Krishnaswamy, Suchitra, et al. “Experimental Retrieval of Photon Statistics from Click Detection.” <i>Physical Review A</i>, vol. 110, no. 2, 023717, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physreva.110.023717\">10.1103/physreva.110.023717</a>.","short":"S. Krishnaswamy, F. Schlue, L. Ares, V. Dyachuk, M. Stefszky, B. Brecht, C. Silberhorn, J. Sperling, Physical Review A 110 (2024).","bibtex":"@article{Krishnaswamy_Schlue_Ares_Dyachuk_Stefszky_Brecht_Silberhorn_Sperling_2024, title={Experimental retrieval of photon statistics from click detection}, volume={110}, DOI={<a href=\"https://doi.org/10.1103/physreva.110.023717\">10.1103/physreva.110.023717</a>}, 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} }","apa":"Krishnaswamy, S., Schlue, F., Ares, L., Dyachuk, V., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Sperling, J. (2024). Experimental retrieval of photon statistics from click detection. <i>Physical Review A</i>, <i>110</i>(2), Article 023717. <a href=\"https://doi.org/10.1103/physreva.110.023717\">https://doi.org/10.1103/physreva.110.023717</a>","ieee":"S. Krishnaswamy <i>et al.</i>, “Experimental retrieval of photon statistics from click detection,” <i>Physical Review A</i>, vol. 110, no. 2, Art. no. 023717, 2024, doi: <a href=\"https://doi.org/10.1103/physreva.110.023717\">10.1103/physreva.110.023717</a>.","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.” <i>Physical Review A</i> 110, no. 2 (2024). <a href=\"https://doi.org/10.1103/physreva.110.023717\">https://doi.org/10.1103/physreva.110.023717</a>.","ama":"Krishnaswamy S, Schlue F, Ares L, et al. Experimental retrieval of photon statistics from click detection. <i>Physical Review A</i>. 2024;110(2). doi:<a href=\"https://doi.org/10.1103/physreva.110.023717\">10.1103/physreva.110.023717</a>"},"intvolume":"       110","year":"2024","issue":"2","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"doi":"10.1103/physreva.110.023717","title":"Experimental retrieval of photon statistics from click detection","date_created":"2024-12-11T15:33:08Z","author":[{"id":"78347","full_name":"Krishnaswamy, Suchitra","last_name":"Krishnaswamy","first_name":"Suchitra"},{"first_name":"Fabian","last_name":"Schlue","full_name":"Schlue, Fabian","id":"63579"},{"full_name":"Ares, L.","last_name":"Ares","first_name":"L."},{"first_name":"V.","last_name":"Dyachuk","full_name":"Dyachuk, V."},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Jan","id":"75127","full_name":"Sperling, Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling"}],"volume":110,"date_updated":"2024-12-11T15:35:07Z","publisher":"American Physical Society (APS)"},{"year":"2024","citation":{"apa":"Kruse, S., Brecht, B., &#38; Silberhorn, C. (2024). <i>A Quantum Pulse Gate Enhanced Photonic Radar Architecture </i>. <a href=\"https://doi.org/10.5281/zenodo.14934743\">https://doi.org/10.5281/zenodo.14934743</a>","short":"S. Kruse, B. Brecht, C. Silberhorn, in: 2024.","mla":"Kruse, Stephan, et al. <i>A Quantum Pulse Gate Enhanced Photonic Radar Architecture </i>. 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.14934743\">10.5281/zenodo.14934743</a>.","bibtex":"@inproceedings{Kruse_Brecht_Silberhorn_2024, title={A Quantum Pulse Gate Enhanced Photonic Radar Architecture }, DOI={<a href=\"https://doi.org/10.5281/zenodo.14934743\">10.5281/zenodo.14934743</a>}, author={Kruse, Stephan and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }","ama":"Kruse S, Brecht B, Silberhorn C. A Quantum Pulse Gate Enhanced Photonic Radar Architecture . In: ; 2024. doi:<a href=\"https://doi.org/10.5281/zenodo.14934743\">10.5281/zenodo.14934743</a>","ieee":"S. Kruse, B. Brecht, and C. Silberhorn, “A Quantum Pulse Gate Enhanced Photonic Radar Architecture ,” 2024, doi: <a href=\"https://doi.org/10.5281/zenodo.14934743\">10.5281/zenodo.14934743</a>.","chicago":"Kruse, Stephan, Benjamin Brecht, and Christine Silberhorn. “A Quantum Pulse Gate Enhanced Photonic Radar Architecture ,” 2024. <a href=\"https://doi.org/10.5281/zenodo.14934743\">https://doi.org/10.5281/zenodo.14934743</a>."},"title":"A Quantum Pulse Gate Enhanced Photonic Radar Architecture ","doi":"10.5281/zenodo.14934743","date_updated":"2025-02-27T06:06:49Z","author":[{"first_name":"Stephan","full_name":"Kruse, Stephan","id":"38254","last_name":"Kruse"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","full_name":"Brecht, Benjamin","id":"27150","first_name":"Benjamin"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2024-11-15T10:17:09Z","status":"public","type":"conference","language":[{"iso":"eng"}],"_id":"57108","user_id":"38254","department":[{"_id":"58"}]},{"type":"journal_article","publication":"Optica Quantum","status":"public","user_id":"63574","department":[{"_id":"288"},{"_id":"623"},{"_id":"288"}],"project":[{"name":"QuICHE: Quanteninformation und Quantenkommunikation mit hochdimensionaler Informationskodierung (QuICHE)","_id":"211"}],"_id":"56267","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2837-6714"]},"citation":{"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. <i>Optica Quantum</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1364/opticaq.532334\">10.1364/opticaq.532334</a>","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,” <i>Optica Quantum</i>, 2024, doi: <a href=\"https://doi.org/10.1364/opticaq.532334\">10.1364/opticaq.532334</a>.","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.” <i>Optica Quantum</i>, 2024. <a href=\"https://doi.org/10.1364/opticaq.532334\">https://doi.org/10.1364/opticaq.532334</a>.","apa":"Serino, L., Ridder, W., Bhattacharjee, A., Gil López, J., Brecht, B., &#38; Silberhorn, C. (2024). Orchestrating time and color: a programmable source of high-dimensional entanglement. <i>Optica Quantum</i>. <a href=\"https://doi.org/10.1364/opticaq.532334\">https://doi.org/10.1364/opticaq.532334</a>","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.” <i>Optica Quantum</i>, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/opticaq.532334\">10.1364/opticaq.532334</a>.","bibtex":"@article{Serino_Ridder_Bhattacharjee_Gil López_Brecht_Silberhorn_2024, title={Orchestrating time and color: a programmable source of high-dimensional entanglement}, DOI={<a href=\"https://doi.org/10.1364/opticaq.532334\">10.1364/opticaq.532334</a>}, 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} }"},"year":"2024","date_created":"2024-09-27T11:46:59Z","author":[{"first_name":"Laura","id":"88242","full_name":"Serino, Laura","last_name":"Serino"},{"id":"63574","full_name":"Ridder, Werner","last_name":"Ridder","first_name":"Werner"},{"full_name":"Bhattacharjee, Abhinandan","id":"95902","last_name":"Bhattacharjee","first_name":"Abhinandan"},{"first_name":"Jano","full_name":"Gil López, Jano","id":"51223","last_name":"Gil López"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"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"}]