--- _id: '63047' author: - first_name: Nicholas Alexander full_name: Güsken, Nicholas Alexander id: '112030' last_name: Güsken orcid: 0000-0002-4816-0666 citation: ama: Güsken NA. Schottky-barrier type infrared photodetector . Published online 2024. apa: Güsken, N. A. (2024). Schottky-barrier type infrared photodetector . bibtex: '@article{Güsken_2024, title={Schottky-barrier type infrared photodetector }, author={Güsken, Nicholas Alexander}, year={2024} }' chicago: Güsken, Nicholas Alexander. “Schottky-Barrier Type Infrared Photodetector ,” 2024. ieee: N. A. Güsken, “Schottky-barrier type infrared photodetector .” 2024. mla: Güsken, Nicholas Alexander. Schottky-Barrier Type Infrared Photodetector . 2024. short: N.A. Güsken, (2024). date_created: 2025-12-11T20:40:43Z date_updated: 2025-12-11T20:46:41Z department: - _id: '623' - _id: '15' - _id: '230' ipc: US12159953B2 ipn: '12159953' publication_date: 2024/12/3 status: public title: 'Schottky-barrier type infrared photodetector ' type: patent user_id: '112030' year: '2024' ... --- _id: '63044' author: - first_name: C. full_name: Hoessbacher, C. last_name: Hoessbacher - first_name: B. full_name: Baeuerle, B. last_name: Baeuerle - first_name: N. full_name: Del Medico, N. last_name: Del Medico - first_name: E. full_name: De Leo, E. last_name: De Leo - first_name: Nicholas Alexander full_name: Güsken, Nicholas Alexander id: '112030' last_name: Güsken orcid: 0000-0002-4816-0666 - first_name: W. full_name: Heni, W. last_name: Heni - first_name: A. full_name: Langenbach, A. last_name: Langenbach - first_name: V. full_name: Tedaldi, V. last_name: Tedaldi citation: ama: 'Hoessbacher C, Baeuerle B, Del Medico N, et al. Plasmonic modulators: bringing a new light to silicon. IET Conference Proceedings. 2024;2023(34):1606-1608. doi:10.1049/icp.2023.2642' apa: 'Hoessbacher, C., Baeuerle, B., Del Medico, N., De Leo, E., Güsken, N. A., Heni, W., Langenbach, A., & Tedaldi, V. (2024). Plasmonic modulators: bringing a new light to silicon. IET Conference Proceedings, 2023(34), 1606–1608. https://doi.org/10.1049/icp.2023.2642' 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={10.1049/icp.2023.2642}, 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} }' 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.” IET Conference Proceedings 2023, no. 34 (2024): 1606–8. https://doi.org/10.1049/icp.2023.2642.' ieee: 'C. Hoessbacher et al., “Plasmonic modulators: bringing a new light to silicon,” IET Conference Proceedings, vol. 2023, no. 34, pp. 1606–1608, 2024, doi: 10.1049/icp.2023.2642.' mla: 'Hoessbacher, C., et al. “Plasmonic Modulators: Bringing a New Light to Silicon.” IET Conference Proceedings, vol. 2023, no. 34, Institution of Engineering and Technology (IET), 2024, pp. 1606–08, doi:10.1049/icp.2023.2642.' 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. date_created: 2025-12-11T20:37:41Z date_updated: 2025-12-15T11:20:43Z department: - _id: '623' - _id: '15' - _id: '230' doi: 10.1049/icp.2023.2642 intvolume: ' 2023' issue: '34' language: - iso: eng page: 1606-1608 publication: IET Conference Proceedings publication_identifier: issn: - 2732-4494 publication_status: published publisher: Institution of Engineering and Technology (IET) status: public title: 'Plasmonic modulators: bringing a new light to silicon' type: journal_article user_id: '112030' volume: 2023 year: '2024' ... --- _id: '63049' article_number: C08 author: - first_name: Nicholas Alexander full_name: Güsken, Nicholas Alexander id: '112030' last_name: Güsken orcid: 0000-0002-4816-0666 - first_name: Mark L. full_name: Brongersma, Mark L. last_name: Brongersma citation: ama: Güsken NA, Brongersma ML. Electrifying the field of metasurface optics. Photonics Insights. 2024;3(4). doi:10.3788/pi.2024.c08 apa: Güsken, N. A., & Brongersma, M. L. (2024). Electrifying the field of metasurface optics. Photonics Insights, 3(4), Article C08. https://doi.org/10.3788/pi.2024.c08 bibtex: '@article{Güsken_Brongersma_2024, title={Electrifying the field of metasurface optics}, volume={3}, DOI={10.3788/pi.2024.c08}, number={4C08}, journal={Photonics Insights}, publisher={Shanghai Institute of Optics and Fine Mechanics}, author={Güsken, Nicholas Alexander and Brongersma, Mark L.}, year={2024} }' chicago: Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field of Metasurface Optics.” Photonics Insights 3, no. 4 (2024). https://doi.org/10.3788/pi.2024.c08. ieee: 'N. A. Güsken and M. L. Brongersma, “Electrifying the field of metasurface optics,” Photonics Insights, vol. 3, no. 4, Art. no. C08, 2024, doi: 10.3788/pi.2024.c08.' mla: Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field of Metasurface Optics.” Photonics Insights, vol. 3, no. 4, C08, Shanghai Institute of Optics and Fine Mechanics, 2024, doi:10.3788/pi.2024.c08. short: N.A. Güsken, M.L. Brongersma, Photonics Insights 3 (2024). date_created: 2025-12-11T20:41:41Z date_updated: 2025-12-15T11:21:46Z department: - _id: '623' - _id: '15' - _id: '230' doi: 10.3788/pi.2024.c08 intvolume: ' 3' issue: '4' language: - iso: eng publication: Photonics Insights publication_identifier: issn: - 2791-1748 publication_status: published publisher: Shanghai Institute of Optics and Fine Mechanics status: public title: Electrifying the field of metasurface optics type: journal_article user_id: '112030' volume: 3 year: '2024' ... --- _id: '53202' 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. author: - first_name: Timon full_name: Schapeler, Timon id: '55629' last_name: Schapeler orcid: 0000-0001-7652-1716 - first_name: Robert full_name: Schade, Robert id: '75963' last_name: Schade orcid: 0000-0002-6268-5397 - first_name: Michael full_name: Lass, Michael id: '24135' last_name: Lass orcid: 0000-0002-5708-7632 - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley citation: ama: Schapeler T, Schade R, Lass M, Plessl C, Bartley T. Scalable quantum detector tomography by high-performance computing. Quantum Science and Technology. 2024;10(1). doi:10.1088/2058-9565/ad8511 apa: Schapeler, T., Schade, R., Lass, M., Plessl, C., & Bartley, T. (2024). Scalable quantum detector tomography by high-performance computing. Quantum Science and Technology, 10(1). https://doi.org/10.1088/2058-9565/ad8511 bibtex: '@article{Schapeler_Schade_Lass_Plessl_Bartley_2024, title={Scalable quantum detector tomography by high-performance computing}, volume={10}, DOI={10.1088/2058-9565/ad8511}, 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} }' chicago: Schapeler, Timon, Robert Schade, Michael Lass, Christian Plessl, and Tim Bartley. “Scalable Quantum Detector Tomography by High-Performance Computing.” Quantum Science and Technology 10, no. 1 (2024). https://doi.org/10.1088/2058-9565/ad8511. ieee: 'T. Schapeler, R. Schade, M. Lass, C. Plessl, and T. Bartley, “Scalable quantum detector tomography by high-performance computing,” Quantum Science and Technology, vol. 10, no. 1, 2024, doi: 10.1088/2058-9565/ad8511.' mla: Schapeler, Timon, et al. “Scalable Quantum Detector Tomography by High-Performance Computing.” Quantum Science and Technology, vol. 10, no. 1, IOP Publishing, 2024, doi:10.1088/2058-9565/ad8511. short: T. Schapeler, R. Schade, M. Lass, C. Plessl, T. Bartley, Quantum Science and Technology 10 (2024). date_created: 2024-04-04T08:43:18Z date_updated: 2025-12-16T11:32:12Z department: - _id: '27' - _id: '623' - _id: '15' doi: 10.1088/2058-9565/ad8511 external_id: arxiv: - '2404.02844' intvolume: ' 10' issue: '1' language: - iso: eng main_file_link: - open_access: '1' oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '239' name: 'ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications' - _id: '191' name: 'PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform' publication: Quantum Science and Technology publisher: IOP Publishing status: public title: Scalable quantum detector tomography by high-performance computing type: journal_article user_id: '55629' volume: 10 year: '2024' ... --- _id: '63219' abstract: - lang: eng text: "We introduce the framework of Bayesian relative belief that directly evaluates whether or not the experimental data at hand support a given hypothesis regarding a quantum system by directly comparing the prior and posterior probabilities for the hypothesis. In model-dimension certification tasks, we show that the relative-belief procedure typically chooses Hilbert spaces that are never smaller in dimension than those selected from optimizing a broad class of information criteria, including Akaike's criterion. As a concrete and focused exposition of this powerful evidence-based technique, we apply the relative-belief procedure to an important application: . In particular, just by comparing prior and posterior probabilities based on data, we demonstrate its capability of tracking multiphoton emissions using (realistically lossy) single-photon detectors in order to assess the actual quality of photon sources without making assumptions, thereby reliably safeguarding source integrity for general quantum-information and communication tasks with Bayesian reasoning. Finally, we discuss how relative belief can be exploited to carry out parametric model certification and estimate the total dimension of the quantum state for the combined (measured) physical and interacting external systems described by the Tavis-Cummings model.\r\n \r\n \r\n \ \r\n \r\n \ Published by the American Physical Society\r\n \ 2024\r\n \r\n \ \r\n " article_number: '012231' author: - first_name: Y. S. full_name: Teo, Y. S. last_name: Teo - first_name: S. U. full_name: Shringarpure, S. U. last_name: Shringarpure - first_name: H. full_name: Jeong, H. last_name: Jeong - first_name: Nidhin full_name: Prasannan, Nidhin id: '71403' last_name: Prasannan - first_name: Benjamin 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 - first_name: M. full_name: Evans, M. last_name: Evans - first_name: D. full_name: Mogilevtsev, D. last_name: Mogilevtsev - first_name: L. L. full_name: Sánchez-Soto, L. L. last_name: Sánchez-Soto citation: ama: Teo YS, Shringarpure SU, Jeong H, et al. Relative-belief inference in quantum information theory. Physical Review A. 2024;110(1). doi:10.1103/physreva.110.012231 apa: Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., & Sánchez-Soto, L. L. (2024). Relative-belief inference in quantum information theory. Physical Review A, 110(1), Article 012231. https://doi.org/10.1103/physreva.110.012231 bibtex: '@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Relative-belief inference in quantum information theory}, volume={110}, DOI={10.1103/physreva.110.012231}, number={1012231}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Teo, Y. S. and Shringarpure, S. U. and Jeong, H. and Prasannan, Nidhin and Brecht, Benjamin and Silberhorn, Christine and Evans, M. and Mogilevtsev, D. and Sánchez-Soto, L. L.}, year={2024} }' chicago: Teo, Y. S., S. U. Shringarpure, H. Jeong, Nidhin Prasannan, Benjamin Brecht, Christine Silberhorn, M. Evans, D. Mogilevtsev, and L. L. Sánchez-Soto. “Relative-Belief Inference in Quantum Information Theory.” Physical Review A 110, no. 1 (2024). https://doi.org/10.1103/physreva.110.012231. ieee: 'Y. S. Teo et al., “Relative-belief inference in quantum information theory,” Physical Review A, vol. 110, no. 1, Art. no. 012231, 2024, doi: 10.1103/physreva.110.012231.' mla: Teo, Y. S., et al. “Relative-Belief Inference in Quantum Information Theory.” Physical Review A, vol. 110, no. 1, 012231, American Physical Society (APS), 2024, doi:10.1103/physreva.110.012231. 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). date_created: 2025-12-18T16:12:21Z date_updated: 2025-12-18T16:12:40Z department: - _id: '15' - _id: '623' doi: 10.1103/physreva.110.012231 intvolume: ' 110' issue: '1' language: - iso: eng publication: Physical Review A publication_identifier: issn: - 2469-9926 - 2469-9934 publication_status: published publisher: American Physical Society (APS) status: public title: Relative-belief inference in quantum information theory type: journal_article user_id: '27150' volume: 110 year: '2024' ... --- _id: '63216' abstract: - lang: eng text: The characterization of the complex spectral amplitude, that is, the spectrum and spectral phase, of single-photon-level light fields is a crucial capability for modern photonic quantum technologies. Since established pulse characterization techniques are not applicable at low intensities, alternative approaches are required. Here, we demonstrate the retrieval of the complex spectral amplitude of single-photon-level light pulses through measuring their chronocyclic Q −function. Our approach draws inspiration from quantum state tomography by exploiting the analogy between quadrature phase space and time-frequency phase space. In the experiment, we perform time-frequency projections with a quantum pulse gate (QPG), which directly yield the chronocyclic Q −function. We evaluate the complex spectral amplitude from the measured chronocyclic Q −function data with maximum likelihood estimation (MLE), which is the established technique for quantum state tomography. The MLE yields not only an unambigious estimate of the complex spectral amplitude of the state under test that does not require any a priori information, but also allows for, in principle, estimating the spectral-temporal coherence properties of the state. Our method accurately recovers features such as jumps in the spectral phase and is resistant against regions with zero spectral intensity, which makes it immediately beneficial for classical pulse characterization problems. article_number: '5551' author: - first_name: Abhinandan full_name: Bhattacharjee, Abhinandan id: '95902' last_name: Bhattacharjee - first_name: Patrick Fabian full_name: Folge, Patrick Fabian id: '88605' last_name: Folge - first_name: Laura Maria full_name: Serino, Laura Maria id: '88242' last_name: Serino - first_name: Jaroslav full_name: Řeháček, Jaroslav last_name: Řeháček - 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 full_name: Brecht, Benjamin id: '27150' last_name: Brecht orcid: '0000-0003-4140-0556 ' citation: ama: Bhattacharjee A, Folge PF, Serino LM, et al. Pulse characterization at the single-photon level through chronocyclic Q-function measurements. Optics Express. 2024;33(3). doi:10.1364/oe.540125 apa: Bhattacharjee, A., Folge, P. F., Serino, L. M., Řeháček, J., Hradil, Z., Silberhorn, C., & Brecht, B. (2024). Pulse characterization at the single-photon level through chronocyclic Q-function measurements. Optics Express, 33(3), Article 5551. https://doi.org/10.1364/oe.540125 bibtex: '@article{Bhattacharjee_Folge_Serino_Řeháček_Hradil_Silberhorn_Brecht_2024, title={Pulse characterization at the single-photon level through chronocyclic Q-function measurements}, volume={33}, DOI={10.1364/oe.540125}, number={35551}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Bhattacharjee, Abhinandan and Folge, Patrick Fabian and Serino, Laura Maria and Řeháček, Jaroslav and Hradil, Zdeněk and Silberhorn, Christine and Brecht, Benjamin}, year={2024} }' chicago: Bhattacharjee, Abhinandan, Patrick Fabian Folge, Laura Maria Serino, Jaroslav Řeháček, Zdeněk Hradil, Christine Silberhorn, and Benjamin Brecht. “Pulse Characterization at the Single-Photon Level through Chronocyclic Q-Function Measurements.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.540125. ieee: 'A. Bhattacharjee et al., “Pulse characterization at the single-photon level through chronocyclic Q-function measurements,” Optics Express, vol. 33, no. 3, Art. no. 5551, 2024, doi: 10.1364/oe.540125.' mla: Bhattacharjee, Abhinandan, et al. “Pulse Characterization at the Single-Photon Level through Chronocyclic Q-Function Measurements.” Optics Express, vol. 33, no. 3, 5551, Optica Publishing Group, 2024, doi:10.1364/oe.540125. short: A. Bhattacharjee, P.F. Folge, L.M. Serino, J. Řeháček, Z. Hradil, C. Silberhorn, B. Brecht, Optics Express 33 (2024). date_created: 2025-12-18T16:08:16Z date_updated: 2025-12-18T16:08:40Z department: - _id: '15' - _id: '623' doi: 10.1364/oe.540125 intvolume: ' 33' issue: '3' language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Pulse characterization at the single-photon level through chronocyclic Q-function measurements type: journal_article user_id: '27150' volume: 33 year: '2024' ... --- _id: '63220' abstract: - lang: eng text: "Identifying a reasonably small Hilbert space that completely describes an unknown quantum state is crucial for efficient quantum information processing. We introduce a general dimension-certification protocol for both discrete and continuous variables that is fully evidence based, relying solely on the experimental data collected and no other unjustified assumptions whatsoever. Using the Bayesian concept of relative belief, we take the effective dimension of the state as the smallest one such that the posterior probability is larger than the prior, as dictated by the data. The posterior probabilities associated with the relative-belief ratios measure the strength of the evidence provide by these ratios so that we can assess whether there is weak or strong evidence in favor or against a particular dimension. Using experimental data from spectral-temporal and polarimetry measurements, we demonstrate how to correctly assign Bayesian plausible error bars for the obtained effective dimensions. This makes relative belief a conservative and easy-to-use model-selection method for any experiment.\r\n \r\n \ \r\n \r\n \r\n \ Published by the American Physical Society\r\n \ 2024\r\n \r\n \ \r\n " article_number: '050204' author: - first_name: Y. S. full_name: Teo, Y. S. last_name: Teo - first_name: S. U. full_name: Shringarpure, S. U. last_name: Shringarpure - first_name: H. full_name: Jeong, H. last_name: Jeong - first_name: Nidhin full_name: Prasannan, Nidhin id: '71403' last_name: Prasannan - first_name: Benjamin 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 - first_name: M. full_name: Evans, M. last_name: Evans - first_name: D. full_name: Mogilevtsev, D. last_name: Mogilevtsev - first_name: L. L. full_name: Sánchez-Soto, L. L. last_name: Sánchez-Soto citation: ama: Teo YS, Shringarpure SU, Jeong H, et al. Evidence-Based Certification of Quantum Dimensions. Physical Review Letters. 2024;133(5). doi:10.1103/physrevlett.133.050204 apa: Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., & Sánchez-Soto, L. L. (2024). Evidence-Based Certification of Quantum Dimensions. Physical Review Letters, 133(5), Article 050204. https://doi.org/10.1103/physrevlett.133.050204 bibtex: '@article{Teo_Shringarpure_Jeong_Prasannan_Brecht_Silberhorn_Evans_Mogilevtsev_Sánchez-Soto_2024, title={Evidence-Based Certification of Quantum Dimensions}, volume={133}, DOI={10.1103/physrevlett.133.050204}, number={5050204}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Teo, Y. S. and Shringarpure, S. U. and Jeong, H. and Prasannan, Nidhin and Brecht, Benjamin and Silberhorn, Christine and Evans, M. and Mogilevtsev, D. and Sánchez-Soto, L. L.}, year={2024} }' chicago: Teo, Y. S., S. U. Shringarpure, H. Jeong, Nidhin Prasannan, Benjamin Brecht, Christine Silberhorn, M. Evans, D. Mogilevtsev, and L. L. Sánchez-Soto. “Evidence-Based Certification of Quantum Dimensions.” Physical Review Letters 133, no. 5 (2024). https://doi.org/10.1103/physrevlett.133.050204. ieee: 'Y. S. Teo et al., “Evidence-Based Certification of Quantum Dimensions,” Physical Review Letters, vol. 133, no. 5, Art. no. 050204, 2024, doi: 10.1103/physrevlett.133.050204.' mla: Teo, Y. S., et al. “Evidence-Based Certification of Quantum Dimensions.” Physical Review Letters, vol. 133, no. 5, 050204, American Physical Society (APS), 2024, doi:10.1103/physrevlett.133.050204. short: Y.S. Teo, S.U. Shringarpure, H. Jeong, N. Prasannan, B. Brecht, C. Silberhorn, M. Evans, D. Mogilevtsev, L.L. Sánchez-Soto, Physical Review Letters 133 (2024). date_created: 2025-12-18T16:13:00Z date_updated: 2025-12-18T16:13:14Z department: - _id: '15' - _id: '623' doi: 10.1103/physrevlett.133.050204 intvolume: ' 133' issue: '5' language: - iso: eng publication: Physical Review Letters publication_identifier: issn: - 0031-9007 - 1079-7114 publication_status: published publisher: American Physical Society (APS) status: public title: Evidence-Based Certification of Quantum Dimensions type: journal_article user_id: '27150' volume: 133 year: '2024' ... --- _id: '54288' abstract: - lang: eng text: "The ability to apply user-chosen large-scale unitary operations with high fidelity to a quantum state is key to realizing future photonic quantum technologies. Here, we realize the implementation of programmable unitary operations on up to 64 frequency-bin modes. To benchmark the performance of our system, we probe different quantum walk unitary operations, in particular, Grover walks on four-dimensional hypercubes with similarities exceeding 95% and quantum walks with 400 steps on circles and finite lines with similarities of 98%. Our results open a path toward implementing high-quality unitary operations, which can form the basis for applications in complex tasks, such as Gaussian boson sampling.\r\n \r\n \ \r\n \r\n \r\n \ Published by the American Physical Society\r\n \ 2024\r\n \r\n \ \r\n " article_number: L022040 author: - first_name: Syamsundar full_name: De, Syamsundar last_name: De - first_name: Vahid full_name: Ansari, Vahid last_name: Ansari - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Sonja full_name: Barkhofen, Sonja id: '48188' last_name: Barkhofen - 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 citation: ama: De S, Ansari V, Sperling J, Barkhofen S, Brecht B, Silberhorn C. Realization of high-fidelity unitary operations on up to 64 frequency bins. Physical Review Research. 2024;6(2). doi:10.1103/physrevresearch.6.l022040 apa: De, S., Ansari, V., Sperling, J., Barkhofen, S., Brecht, B., & Silberhorn, C. (2024). Realization of high-fidelity unitary operations on up to 64 frequency bins. Physical Review Research, 6(2), Article L022040. https://doi.org/10.1103/physrevresearch.6.l022040 bibtex: '@article{De_Ansari_Sperling_Barkhofen_Brecht_Silberhorn_2024, title={Realization of high-fidelity unitary operations on up to 64 frequency bins}, volume={6}, DOI={10.1103/physrevresearch.6.l022040}, number={2L022040}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={De, Syamsundar and Ansari, Vahid and Sperling, Jan and Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }' chicago: De, Syamsundar, Vahid Ansari, Jan Sperling, Sonja Barkhofen, Benjamin Brecht, and Christine Silberhorn. “Realization of High-Fidelity Unitary Operations on up to 64 Frequency Bins.” Physical Review Research 6, no. 2 (2024). https://doi.org/10.1103/physrevresearch.6.l022040. ieee: 'S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, and C. Silberhorn, “Realization of high-fidelity unitary operations on up to 64 frequency bins,” Physical Review Research, vol. 6, no. 2, Art. no. L022040, 2024, doi: 10.1103/physrevresearch.6.l022040.' mla: De, Syamsundar, et al. “Realization of High-Fidelity Unitary Operations on up to 64 Frequency Bins.” Physical Review Research, vol. 6, no. 2, L022040, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.l022040. short: S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, C. Silberhorn, Physical Review Research 6 (2024). date_created: 2024-05-14T12:40:48Z date_updated: 2025-12-18T16:14:39Z department: - _id: '623' - _id: '288' - _id: '15' doi: 10.1103/physrevresearch.6.l022040 intvolume: ' 6' issue: '2' language: - iso: eng project: - _id: '216' name: 'QuPoPCoRN: QUPOPCORN: Quantum Particles on Programmable Complex Reconfigurable Networks' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society (APS) status: public title: Realization of high-fidelity unitary operations on up to 64 frequency bins type: journal_article user_id: '27150' volume: 6 year: '2024' ... --- _id: '63218' abstract: - lang: eng text: "Linear optical quantum networks, consisting of a quantum input state and a multiport interferometer, are an important building block for many quantum technological concepts, e.g., Gaussian boson sampling. Here, we propose the implementation of such networks based on frequency conversion by utilizing a so-called multioutput quantum pulse gate (MQPG). This approach allows the resource-efficient and therefore scalable implementation of frequency-bin-based, fully programmable interferometers in a single spatial and polarization mode. Quantum input states for this network can be provided by utilizing the strong frequency entanglement of a type-0 parametric down-conversion (PDC) source. Here, we develop a theoretical framework to describe linear networks based on an MQPG and PDC and utilize it to investigate the limits and scalabilty of our approach.\r\n \r\n \r\n \ \r\n \r\n \ Published by the American Physical Society\r\n \ 2024\r\n \r\n \ \r\n " article_number: '040329' author: - first_name: Patrick Fabian full_name: Folge, Patrick Fabian id: '88605' last_name: Folge - first_name: Michael full_name: Stefszky, Michael id: '42777' last_name: Stefszky - 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 citation: ama: Folge PF, Stefszky M, Brecht B, Silberhorn C. A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. PRX Quantum. 2024;5(4). doi:10.1103/prxquantum.5.040329 apa: Folge, P. F., Stefszky, M., Brecht, B., & Silberhorn, C. (2024). A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates. PRX Quantum, 5(4), Article 040329. https://doi.org/10.1103/prxquantum.5.040329 bibtex: '@article{Folge_Stefszky_Brecht_Silberhorn_2024, title={A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates}, volume={5}, DOI={10.1103/prxquantum.5.040329}, number={4040329}, journal={PRX Quantum}, publisher={American Physical Society (APS)}, author={Folge, Patrick Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }' chicago: Folge, Patrick Fabian, Michael Stefszky, Benjamin Brecht, and Christine Silberhorn. “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates.” PRX Quantum 5, no. 4 (2024). https://doi.org/10.1103/prxquantum.5.040329. ieee: 'P. F. Folge, M. Stefszky, B. Brecht, and C. Silberhorn, “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates,” PRX Quantum, vol. 5, no. 4, Art. no. 040329, 2024, doi: 10.1103/prxquantum.5.040329.' mla: Folge, Patrick Fabian, et al. “A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates.” PRX Quantum, vol. 5, no. 4, 040329, American Physical Society (APS), 2024, doi:10.1103/prxquantum.5.040329. short: P.F. Folge, M. Stefszky, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024). date_created: 2025-12-18T16:10:37Z date_updated: 2025-12-18T16:10:55Z department: - _id: '15' - _id: '623' doi: 10.1103/prxquantum.5.040329 intvolume: ' 5' issue: '4' language: - iso: eng publication: PRX Quantum publication_identifier: issn: - 2691-3399 publication_status: published publisher: American Physical Society (APS) status: public title: A Framework for Fully Programmable Frequency-Encoded Quantum Networks Harnessing Multioutput Quantum Pulse Gates type: journal_article user_id: '27150' volume: 5 year: '2024' ... --- _id: '63217' abstract: - lang: eng text: 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. article_number: '5577' author: - first_name: Laura Maria full_name: Serino, Laura Maria id: '88242' last_name: Serino - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - 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 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. Optics Express. 2024;33(3). doi:10.1364/oe.544206 apa: Serino, L. M., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate. Optics Express, 33(3), Article 5577. https://doi.org/10.1364/oe.544206 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={10.1364/oe.544206}, number={35577}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Serino, Laura Maria and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }' 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.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.544206. 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,” Optics Express, vol. 33, no. 3, Art. no. 5577, 2024, doi: 10.1364/oe.544206.' mla: Serino, Laura Maria, et al. “Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output Quantum Pulse Gate.” Optics Express, vol. 33, no. 3, 5577, Optica Publishing Group, 2024, doi:10.1364/oe.544206. short: L.M. Serino, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 33 (2024). date_created: 2025-12-18T16:09:22Z date_updated: 2025-12-18T16:09:44Z department: - _id: '15' - _id: '623' doi: 10.1364/oe.544206 intvolume: ' 33' issue: '3' language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate type: journal_article user_id: '27150' volume: 33 year: '2024' ... --- _id: '50840' abstract: - lang: eng text: 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. article_number: '1' author: - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - first_name: Timon full_name: Schapeler, Timon id: '55629' last_name: Schapeler orcid: 0000-0001-7652-1716 - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley citation: ama: Protte M, Schapeler T, Sperling J, Bartley T. Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. Optica Quantum. 2024;2(1). doi:10.1364/opticaq.502201 apa: Protte, M., Schapeler, T., Sperling, J., & Bartley, T. (2024). Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. Optica Quantum, 2(1), Article 1. https://doi.org/10.1364/opticaq.502201 bibtex: '@article{Protte_Schapeler_Sperling_Bartley_2024, title={Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors}, volume={2}, DOI={10.1364/opticaq.502201}, number={11}, journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Protte, Maximilian and Schapeler, Timon and Sperling, Jan and Bartley, Tim}, year={2024} }' chicago: Protte, Maximilian, Timon Schapeler, Jan Sperling, and Tim Bartley. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” Optica Quantum 2, no. 1 (2024). https://doi.org/10.1364/opticaq.502201. ieee: 'M. Protte, T. Schapeler, J. Sperling, and T. Bartley, “Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors,” Optica Quantum, vol. 2, no. 1, Art. no. 1, 2024, doi: 10.1364/opticaq.502201.' mla: Protte, Maximilian, et al. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” Optica Quantum, vol. 2, no. 1, 1, Optica Publishing Group, 2024, doi:10.1364/opticaq.502201. short: M. Protte, T. Schapeler, J. Sperling, T. Bartley, Optica Quantum 2 (2024). date_created: 2024-01-25T11:48:02Z date_updated: 2025-12-18T17:06:27Z department: - _id: '15' - _id: '623' doi: 10.1364/opticaq.502201 intvolume: ' 2' issue: '1' language: - iso: eng main_file_link: - open_access: '1' oa: '1' project: - _id: '191' name: 'PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform' - _id: '239' name: 'ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications' - _id: '209' name: 'ISOQC: Quantenkommunikation mit integrierter Optik im Zusammenhang mit supraleitender Elektronik' publication: Optica Quantum publication_identifier: issn: - 2837-6714 publication_status: published publisher: Optica Publishing Group status: public title: Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors type: journal_article user_id: '55629' volume: 2 year: '2024' ... --- _id: '54815' abstract: - lang: eng text: "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⋅106pairssmWGHz 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 Δτ ≈ 120 fs while maintaining the narrow bandwidth Δω\r\n \ p\r\n  ≪ 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." article_number: '23945' article_type: original author: - first_name: René full_name: Pollmann, René id: '78890' last_name: Pollmann - first_name: Franz full_name: Roeder, Franz id: '88149' last_name: Roeder - first_name: Victor full_name: Quiring, Victor last_name: Quiring - first_name: Raimund full_name: Ricken, Raimund last_name: Ricken - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - 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 citation: ama: Pollmann R, Roeder F, Quiring V, et al. Integrated, bright broadband, two-colour parametric down-conversion source. Optics Express. 2024;32(14). doi:10.1364/oe.522549 apa: Pollmann, R., Roeder, F., Quiring, V., Ricken, R., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Integrated, bright broadband, two-colour parametric down-conversion source. Optics Express, 32(14), Article 23945. https://doi.org/10.1364/oe.522549 bibtex: '@article{Pollmann_Roeder_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024, title={Integrated, bright broadband, two-colour parametric down-conversion source}, volume={32}, DOI={10.1364/oe.522549}, 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} }' 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.” Optics Express 32, no. 14 (2024). https://doi.org/10.1364/oe.522549. ieee: 'R. Pollmann et al., “Integrated, bright broadband, two-colour parametric down-conversion source,” Optics Express, vol. 32, no. 14, Art. no. 23945, 2024, doi: 10.1364/oe.522549.' mla: Pollmann, René, et al. “Integrated, Bright Broadband, Two-Colour Parametric down-Conversion Source.” Optics Express, vol. 32, no. 14, 23945, Optica Publishing Group, 2024, doi:10.1364/oe.522549. short: R. Pollmann, F. Roeder, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 32 (2024). date_created: 2024-06-19T06:58:17Z date_updated: 2025-12-19T11:37:41Z department: - _id: '15' - _id: '623' - _id: '288' doi: 10.1364/oe.522549 intvolume: ' 32' issue: '14' language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Integrated, bright broadband, two-colour parametric down-conversion source type: journal_article user_id: '78890' volume: 32 year: '2024' ... --- _id: '57862' abstract: - lang: eng text: The latest applications in ultrafast quantum metrology require bright, broadband bi-photon sources with one of the photons in the mid-infrared and the other in the visible to near infrared. However, existing sources based on bulk crystals are limited in brightness due to the short interaction length and only allow for limited dispersion engineering. Here, we present an integrated PDC source based on a Ti:LiNbO3 waveguide that generates broadband bi-photons with central wavelengths at 860 nm and 2800 nm. Their spectral bandwidth exceeds 25 THz and is achieved by simultaneous matching of the group velocities (GVs) and cancellation of GV dispersion for the signal and idler field. We provide an intuitive understanding of the process by studying our source’s behavior at different temperatures and pump wavelengths, which agrees well with simulations. article_number: '123025' article_type: original author: - first_name: Franz full_name: Roeder, Franz id: '88149' last_name: Roeder - first_name: Abira full_name: Gnanavel, Abira last_name: Gnanavel - first_name: René full_name: Pollmann, René id: '78890' last_name: Pollmann - first_name: Olga full_name: Brecht, Olga last_name: Brecht - first_name: Michael full_name: Stefszky, Michael id: '42777' last_name: Stefszky - first_name: Laura full_name: Padberg, Laura id: '40300' last_name: Padberg - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Benjamin full_name: Brecht, Benjamin id: '27150' last_name: Brecht orcid: '0000-0003-4140-0556 ' citation: ama: Roeder F, Gnanavel A, Pollmann R, et al. Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics. 2024;26(12). doi:10.1088/1367-2630/ad9f98 apa: Roeder, F., Gnanavel, A., Pollmann, R., Brecht, O., Stefszky, M., Padberg, L., Eigner, C., Silberhorn, C., & Brecht, B. (2024). Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics, 26(12), Article 123025. https://doi.org/10.1088/1367-2630/ad9f98 bibtex: '@article{Roeder_Gnanavel_Pollmann_Brecht_Stefszky_Padberg_Eigner_Silberhorn_Brecht_2024, title={Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared}, volume={26}, DOI={10.1088/1367-2630/ad9f98}, number={12123025}, journal={New Journal of Physics}, publisher={IOP Publishing}, author={Roeder, Franz and Gnanavel, Abira and Pollmann, René and Brecht, Olga and Stefszky, Michael and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Brecht, Benjamin}, year={2024} }' chicago: Roeder, Franz, Abira Gnanavel, René Pollmann, Olga Brecht, Michael Stefszky, Laura Padberg, Christof Eigner, Christine Silberhorn, and Benjamin Brecht. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New Journal of Physics 26, no. 12 (2024). https://doi.org/10.1088/1367-2630/ad9f98. ieee: 'F. Roeder et al., “Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared,” New Journal of Physics, vol. 26, no. 12, Art. no. 123025, 2024, doi: 10.1088/1367-2630/ad9f98.' mla: Roeder, Franz, et al. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New Journal of Physics, vol. 26, no. 12, 123025, IOP Publishing, 2024, doi:10.1088/1367-2630/ad9f98. short: F. Roeder, A. Gnanavel, R. Pollmann, O. Brecht, M. Stefszky, L. Padberg, C. Eigner, C. Silberhorn, B. Brecht, New Journal of Physics 26 (2024). date_created: 2024-12-27T19:01:14Z date_updated: 2025-12-19T11:36:36Z department: - _id: '288' - _id: '623' - _id: '15' doi: 10.1088/1367-2630/ad9f98 intvolume: ' 26' issue: '12' language: - iso: eng project: - _id: '571' name: 'MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing' - _id: '190' name: 'E2TPA: Exploiting Entangled Two-Photon Absorption' publication: New Journal of Physics publication_identifier: issn: - 1367-2630 publication_status: published publisher: IOP Publishing status: public title: Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared type: journal_article user_id: '78890' volume: 26 year: '2024' ... --- _id: '32407' abstract: - lang: eng text: "Estimating the ground state energy of a local Hamiltonian is a central\r\nproblem in quantum chemistry. In order to further investigate its complexity\r\nand the potential of quantum algorithms for quantum chemistry, Gharibian and Le\r\nGall (STOC 2022) recently introduced the guided local Hamiltonian problem\r\n(GLH), which is a variant of the local Hamiltonian problem where an\r\napproximation of a ground state is given as an additional input. Gharibian and\r\nLe Gall showed quantum advantage (more precisely, BQP-completeness) for GLH\r\nwith $6$-local Hamiltonians when the guiding vector has overlap\r\n(inverse-polynomially) close to 1/2 with a ground state. In this paper, we\r\noptimally improve both the locality and the overlap parameters: we show that\r\nthis quantum advantage (BQP-completeness) persists even with 2-local\r\nHamiltonians, and even when the guiding vector has overlap\r\n(inverse-polynomially) close to 1 with a ground state. Moreover, we show that\r\nthe quantum advantage also holds for 2-local physically motivated Hamiltonians\r\non a 2D square lattice. This makes a further step towards establishing\r\npractical quantum advantage in quantum chemistry." author: - first_name: Sevag full_name: Gharibian, Sevag id: '71541' last_name: Gharibian orcid: 0000-0002-9992-3379 - first_name: Ryu full_name: Hayakawa, Ryu last_name: Hayakawa - first_name: François Le full_name: Gall, François Le last_name: Gall - first_name: Tomoyuki full_name: Morimae, Tomoyuki last_name: Morimae citation: ama: 'Gharibian S, Hayakawa R, Gall FL, Morimae T. Improved Hardness Results for the Guided Local Hamiltonian Problem. In: Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP). Vol 261. ; 2023:1-19. doi:10.4230/LIPIcs.ICALP.2023.32' apa: Gharibian, S., Hayakawa, R., Gall, F. L., & Morimae, T. (2023). Improved Hardness Results for the Guided Local Hamiltonian Problem. Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP), 261(32), 1–19. https://doi.org/10.4230/LIPIcs.ICALP.2023.32 bibtex: '@inproceedings{Gharibian_Hayakawa_Gall_Morimae_2023, title={Improved Hardness Results for the Guided Local Hamiltonian Problem}, volume={261}, DOI={10.4230/LIPIcs.ICALP.2023.32}, number={32}, booktitle={Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP)}, author={Gharibian, Sevag and Hayakawa, Ryu and Gall, François Le and Morimae, Tomoyuki}, year={2023}, pages={1–19} }' chicago: Gharibian, Sevag, Ryu Hayakawa, François Le Gall, and Tomoyuki Morimae. “Improved Hardness Results for the Guided Local Hamiltonian Problem.” In Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP), 261:1–19, 2023. https://doi.org/10.4230/LIPIcs.ICALP.2023.32. ieee: 'S. Gharibian, R. Hayakawa, F. L. Gall, and T. Morimae, “Improved Hardness Results for the Guided Local Hamiltonian Problem,” in Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP), 2023, vol. 261, no. 32, pp. 1–19, doi: 10.4230/LIPIcs.ICALP.2023.32.' mla: Gharibian, Sevag, et al. “Improved Hardness Results for the Guided Local Hamiltonian Problem.” Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP), vol. 261, no. 32, 2023, pp. 1–19, doi:10.4230/LIPIcs.ICALP.2023.32. short: 'S. Gharibian, R. Hayakawa, F.L. Gall, T. Morimae, in: Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP), 2023, pp. 1–19.' date_created: 2022-07-22T12:32:40Z date_updated: 2023-10-09T04:17:10Z department: - _id: '623' - _id: '7' doi: 10.4230/LIPIcs.ICALP.2023.32 external_id: arxiv: - '2207.10250' intvolume: ' 261' issue: '32' language: - iso: eng page: 1-19 publication: Proceedings of the 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP) publication_status: published status: public title: Improved Hardness Results for the Guided Local Hamiltonian Problem type: conference user_id: '71541' volume: 261 year: '2023' ... --- _id: '48502' abstract: - lang: eng text: The prediction of photon echoes is an important technique for gaining an understanding of optical quantum systems. However, this requires a large number of simulations with varying parameters and/or input pulses, which renders numerical studies expensive. This article investigates how we can use data-driven surrogate models based on the Koopman operator to accelerate this process. In order to be successful, we require a model that is accurate over a large number of time steps. To this end, we employ a bilinear Koopman model using extended dynamic mode decomposition and simulate the optical Bloch equations for an ensemble of inhomogeneously broadened two-level systems. Such systems are well suited to describe the excitation of excitonic resonances in semiconductor nanostructures, for example, ensembles of semiconductor quantum dots. We perform a detailed study on the required number of system simulations such that the resulting data-driven Koopman model is sufficiently accurate for a wide range of parameter settings. We analyze the L2 error and the relative error of the photon echo peak and investigate how the control positions relate to the stabilization. After proper training, the dynamics of the quantum ensemble can be predicted accurately and numerically very efficiently by our methods. author: - first_name: Sebastian full_name: Peitz, Sebastian id: '47427' last_name: Peitz orcid: 0000-0002-3389-793X - first_name: Anna full_name: Hunstig, Anna last_name: Hunstig - first_name: Hendrik full_name: Rose, Hendrik id: '55958' last_name: Rose orcid: 0000-0002-3079-5428 - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: Peitz S, Hunstig A, Rose H, Meier T. Accelerating the analysis of optical quantum systems using the Koopman operator. Published online 2023. apa: Peitz, S., Hunstig, A., Rose, H., & Meier, T. (2023). Accelerating the analysis of optical quantum systems using the Koopman operator. bibtex: '@article{Peitz_Hunstig_Rose_Meier_2023, title={Accelerating the analysis of optical quantum systems using the Koopman operator}, author={Peitz, Sebastian and Hunstig, Anna and Rose, Hendrik and Meier, Torsten}, year={2023} }' chicago: Peitz, Sebastian, Anna Hunstig, Hendrik Rose, and Torsten Meier. “Accelerating the Analysis of Optical Quantum Systems Using the Koopman Operator,” 2023. ieee: S. Peitz, A. Hunstig, H. Rose, and T. Meier, “Accelerating the analysis of optical quantum systems using the Koopman operator.” 2023. mla: Peitz, Sebastian, et al. Accelerating the Analysis of Optical Quantum Systems Using the Koopman Operator. 2023. short: S. Peitz, A. Hunstig, H. Rose, T. Meier, (2023). date_created: 2023-10-27T09:40:59Z date_updated: 2023-10-27T10:05:07Z department: - _id: '655' - _id: '623' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/pdf/2310.16578.pdf oa: '1' status: public title: Accelerating the analysis of optical quantum systems using the Koopman operator type: preprint user_id: '47427' year: '2023' ... --- _id: '48349' abstract: - lang: eng text: We report a titanium indiffused waveguide resonator featuring an integrated electro-optic modulator for cavity length stabilisation that produces close to 5 dB of squeezed light at 1550 nm (2.4 dB directly measured). The resonator is locked on resonance for tens of minutes with 70 mW of SH light incident on the cavity, demonstrating that photorefraction can be mitigated. Squeezed light production concurrent with cavity length stabilisation utilising the integrated EOM is demonstrated. The device demonstrates the suitability of this platform for squeezed light generation in network applications, where stabilisation to the reference field is typically necessary. article_number: '34903' author: - first_name: M. full_name: Stefszky, M. last_name: Stefszky - first_name: F. full_name: vom Bruch, F. last_name: vom Bruch - first_name: M. full_name: Santandrea, M. last_name: Santandrea - first_name: R. full_name: Ricken, R. last_name: Ricken - first_name: V. full_name: Quiring, V. last_name: Quiring - first_name: C. full_name: Eigner, C. last_name: Eigner - first_name: H full_name: Herrmann, H last_name: Herrmann - first_name: C full_name: Silberhorn, C last_name: Silberhorn citation: ama: Stefszky M, vom Bruch F, Santandrea M, et al. Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications. Optics Express. 2023;31(21). doi:10.1364/oe.498423 apa: Stefszky, M., vom Bruch, F., Santandrea, M., Ricken, R., Quiring, V., Eigner, C., Herrmann, H., & Silberhorn, C. (2023). Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications. Optics Express, 31(21), Article 34903. https://doi.org/10.1364/oe.498423 bibtex: '@article{Stefszky_vom Bruch_Santandrea_Ricken_Quiring_Eigner_Herrmann_Silberhorn_2023, title={Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications}, volume={31}, DOI={10.1364/oe.498423}, number={2134903}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Stefszky, M. and vom Bruch, F. and Santandrea, M. and Ricken, R. and Quiring, V. and Eigner, C. and Herrmann, H and Silberhorn, C}, year={2023} }' chicago: Stefszky, M., F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner, H Herrmann, and C Silberhorn. “Lithium Niobate Waveguide Squeezer with Integrated Cavity Length Stabilisation for Network Applications.” Optics Express 31, no. 21 (2023). https://doi.org/10.1364/oe.498423. ieee: 'M. Stefszky et al., “Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications,” Optics Express, vol. 31, no. 21, Art. no. 34903, 2023, doi: 10.1364/oe.498423.' mla: Stefszky, M., et al. “Lithium Niobate Waveguide Squeezer with Integrated Cavity Length Stabilisation for Network Applications.” Optics Express, vol. 31, no. 21, 34903, Optica Publishing Group, 2023, doi:10.1364/oe.498423. short: M. Stefszky, F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner, H. Herrmann, C. Silberhorn, Optics Express 31 (2023). date_created: 2023-10-19T14:22:59Z date_updated: 2023-11-02T09:26:42Z department: - _id: '288' - _id: '623' doi: 10.1364/oe.498423 intvolume: ' 31' issue: '21' keyword: - Atomic and Molecular Physics - and Optics language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications type: journal_article user_id: '42777' volume: 31 year: '2023' ... --- _id: '48599' abstract: - lang: eng text: AbstractThe biexciton‐exciton emission cascade commonly used in quantum‐dot systems to generate polarization entanglement yields photons with intrinsically limited indistinguishability. In the present work, it focuses on the generation of pairs of photons with high degrees of polarization entanglement and simultaneously high indistinguishability. It achieves this goal by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates that a suitably tailored circular Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement of biexciton emission paired with spectrally broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical study combines (i) the optimization of realistic photonic structures solving Maxwell's equations from which model parameters are extracted as input for (ii) microscopic simulations of quantum‐dot cavity excitation dynamics with full access to photon properties. It reports non‐trivial dependencies on system parameters and use the predictive power of the combined theoretical approach to determine the optimal range of Purcell enhancement that maximizes indistinguishability and entanglement to near unity values, here specifically for the telecom C‐band at 1550 nm. author: - first_name: David full_name: Bauch, David last_name: Bauch - first_name: Dustin full_name: Siebert, Dustin last_name: Siebert - first_name: Klaus full_name: Jöns, Klaus id: '85353' last_name: Jöns - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. Advanced Quantum Technologies. Published online 2023. doi:10.1002/qute.202300142 apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023). On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. Advanced Quantum Technologies. https://doi.org/10.1002/qute.202300142 bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, DOI={10.1002/qute.202300142}, journal={Advanced Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }' chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” Advanced Quantum Technologies, 2023. https://doi.org/10.1002/qute.202300142. ieee: 'D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” Advanced Quantum Technologies, 2023, doi: 10.1002/qute.202300142.' mla: Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” Advanced Quantum Technologies, Wiley, 2023, doi:10.1002/qute.202300142. short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum Technologies (2023). date_created: 2023-11-03T10:07:38Z date_updated: 2023-12-21T10:41:17Z department: - _id: '61' - _id: '230' - _id: '429' - _id: '623' doi: 10.1002/qute.202300142 keyword: - tet_topic_qd language: - iso: eng main_file_link: - open_access: '1' url: https://onlinelibrary.wiley.com/doi/10.1002/qute.202300142 oa: '1' project: - _id: '173' grant_number: '231447078' name: 'TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen (C09*)' - _id: '167' grant_number: '231447078' name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)' - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Advanced Quantum Technologies publication_identifier: issn: - 2511-9044 - 2511-9044 publication_status: published publisher: Wiley related_material: record: - id: '43246' relation: earlier_version status: public status: public title: On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs type: journal_article user_id: '158' year: '2023' ... --- _id: '43246' abstract: - lang: eng text: The biexciton-exciton emission cascade commonly used in quantum-dot systems to generate polarization entanglement yields photons with intrinsically limited indistinguishability. In the present work we focus on the generation of pairs of photons with high degrees of polarization entanglement and simultaneously high indistinguishibility. We achieve this goal by selectively reducing the biexciton lifetime with an optical resonator. We demonstrate that a suitably tailored circular Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement of biexciton emission paired with spectrally broad photon extraction and two-fold degenerate optical modes. Our in-depth theoretical study combines (i) the optimization of realistic photonic structures solving Maxwell's equations from which model parameters are extracted as input for (ii) microscopic simulations of quantum-dot cavity excitation dynamics with full access to photon properties. We report non-trivial dependencies on system parameters and use the predictive power of our combined theoretical approach to determine the optimal range of Purcell enhancement that maximizes indistinguishability and entanglement to near unity values in the telecom C-band at $1550\,\mathrm{nm}$. author: - first_name: David full_name: Bauch, David last_name: Bauch - first_name: Dustin full_name: Siebert, Dustin last_name: Siebert - first_name: Klaus full_name: Jöns, Klaus id: '85353' last_name: Jöns - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs. Published online 2023. apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023). On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs. bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }' chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher. “On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using Tailored Cavity Designs,” 2023. ieee: D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs.” 2023. mla: Bauch, David, et al. On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using Tailored Cavity Designs. 2023. short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, (2023). date_created: 2023-03-31T13:22:05Z date_updated: 2023-12-21T10:41:17Z department: - _id: '61' - _id: '230' - _id: '429' - _id: '623' - _id: '15' - _id: '35' - _id: '170' - _id: '297' keyword: - tet_topic_phc - tet_topic_qd language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/pdf/2303.13871.pdf oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '173' grant_number: '231447078' name: 'TRR 142 - C09: TRR 142 - Subproject C09' - _id: '167' grant_number: '231447078' name: 'TRR 142 - B06: TRR 142 - Subproject B06' - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' related_material: record: - id: '48599' relation: later_version status: public status: public title: On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs type: preprint user_id: '16199' year: '2023' ... --- _id: '31189' abstract: - lang: eng text: "Given a geometrically finite hyperbolic surface of infinite volume it is a\r\nclassical result of Patterson that the positive Laplace-Beltrami operator has\r\nno $L^2$-eigenvalues $\\geq 1/4$. In this article we prove a generalization of\r\nthis result for the joint $L^2$-eigenvalues of the algebra of commuting\r\ndifferential operators on Riemannian locally symmetric spaces $\\Gamma\\backslash\r\nG/K$ of higher rank. We derive dynamical assumptions on the $\\Gamma$-action on\r\nthe geodesic and the Satake compactifications which imply the absence of the\r\ncorresponding principal eigenvalues. A large class of examples fulfilling these\r\nassumptions are the non-compact quotients by Anosov subgroups." author: - first_name: Tobias full_name: Weich, Tobias id: '49178' last_name: Weich orcid: 0000-0002-9648-6919 - first_name: Lasse Lennart full_name: Wolf, Lasse Lennart id: '45027' last_name: Wolf citation: ama: Weich T, Wolf LL. Absence of principal eigenvalues for higher rank locally symmetric  spaces. Communications in Mathematical Physics. 2023;403. doi:https://doi.org/10.1007/s00220-023-04819-1 apa: Weich, T., & Wolf, L. L. (2023). Absence of principal eigenvalues for higher rank locally symmetric  spaces. Communications in Mathematical Physics, 403. https://doi.org/10.1007/s00220-023-04819-1 bibtex: '@article{Weich_Wolf_2023, title={Absence of principal eigenvalues for higher rank locally symmetric  spaces}, volume={403}, DOI={https://doi.org/10.1007/s00220-023-04819-1}, journal={Communications in Mathematical Physics}, author={Weich, Tobias and Wolf, Lasse Lennart}, year={2023} }' chicago: Weich, Tobias, and Lasse Lennart Wolf. “Absence of Principal Eigenvalues for Higher Rank Locally Symmetric  Spaces.” Communications in Mathematical Physics 403 (2023). https://doi.org/10.1007/s00220-023-04819-1. ieee: 'T. Weich and L. L. Wolf, “Absence of principal eigenvalues for higher rank locally symmetric  spaces,” Communications in Mathematical Physics, vol. 403, 2023, doi: https://doi.org/10.1007/s00220-023-04819-1.' mla: Weich, Tobias, and Lasse Lennart Wolf. “Absence of Principal Eigenvalues for Higher Rank Locally Symmetric  Spaces.” Communications in Mathematical Physics, vol. 403, 2023, doi:https://doi.org/10.1007/s00220-023-04819-1. short: T. Weich, L.L. Wolf, Communications in Mathematical Physics 403 (2023). date_created: 2022-05-11T10:38:11Z date_updated: 2024-02-06T20:52:40Z department: - _id: '10' - _id: '548' - _id: '623' doi: https://doi.org/10.1007/s00220-023-04819-1 external_id: arxiv: - '2205.03167' intvolume: ' 403' language: - iso: eng publication: Communications in Mathematical Physics publication_identifier: unknown: - 1275-1295 status: public title: Absence of principal eigenvalues for higher rank locally symmetric spaces type: journal_article user_id: '49178' volume: 403 year: '2023' ... --- _id: '51206' abstract: - lang: eng text: "We present a numerical algorithm for the computation of invariant Ruelle\r\ndistributions on convex co-compact hyperbolic surfaces. This is achieved by\r\nexploiting the connection between invariant Ruelle distributions and residues\r\nof meromorphically continued weighted zeta functions established by the authors\r\ntogether with Barkhofen (2021). To make this applicable for numerics we express\r\nthe weighted zeta as the logarithmic derivative of a suitable parameter\r\ndependent Fredholm determinant similar to Borthwick (2014). As an additional\r\ndifficulty our transfer operator has to include a contracting direction which\r\nwe account for with techniques developed by Rugh (1992). We achieve a further\r\nimprovement in convergence speed for our algorithm in the case of surfaces with\r\nadditional symmetries by proving and applying a symmetry reduction of weighted\r\nzeta functions." author: - first_name: Philipp full_name: Schütte, Philipp id: '50168' last_name: Schütte - first_name: Tobias full_name: Weich, Tobias id: '49178' last_name: Weich orcid: 0000-0002-9648-6919 citation: ama: Schütte P, Weich T. Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions. arXiv:230813463. Published online 2023. apa: Schütte, P., & Weich, T. (2023). Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions. In arXiv:2308.13463. bibtex: '@article{Schütte_Weich_2023, title={Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions}, journal={arXiv:2308.13463}, author={Schütte, Philipp and Weich, Tobias}, year={2023} }' chicago: Schütte, Philipp, and Tobias Weich. “Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions.” ArXiv:2308.13463, 2023. ieee: P. Schütte and T. Weich, “Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions,” arXiv:2308.13463. 2023. mla: Schütte, Philipp, and Tobias Weich. “Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces  -- A Numerical Algorithm via Weighted Zeta Functions.” ArXiv:2308.13463, 2023. short: P. Schütte, T. Weich, ArXiv:2308.13463 (2023). date_created: 2024-02-06T20:58:35Z date_updated: 2024-02-11T19:56:01Z department: - _id: '10' - _id: '623' - _id: '548' external_id: arxiv: - '2308.13463' language: - iso: eng publication: arXiv:2308.13463 status: public title: Invariant Ruelle Distributions on Convex-Cocompact Hyperbolic Surfaces -- A Numerical Algorithm via Weighted Zeta Functions type: preprint user_id: '49178' year: '2023' ...