[{"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"429"},{"_id":"27"},{"_id":"230"},{"_id":"35"}],"project":[{"_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"name":"TRR 142 - A11: TRR 142 - Subproject A11","_id":"166"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"54865","language":[{"iso":"eng"}],"article_number":"076201","type":"journal_article","publication":"Physical Review Letters","status":"public","author":[{"last_name":"Krenz","full_name":"Krenz, Marvin","id":"52309","first_name":"Marvin"},{"id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","first_name":"Uwe"},{"first_name":"Wolf Gero","last_name":"Schmidt","orcid":"0000-0002-2717-5076","id":"468","full_name":"Schmidt, Wolf Gero"}],"date_created":"2024-06-24T09:39:42Z","volume":132,"date_updated":"2025-12-05T13:38:22Z","publisher":"American Physical Society (APS)","doi":"10.1103/physrevlett.132.076201","title":"Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface","issue":"7","publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"citation":{"short":"M. Krenz, U. Gerstmann, W.G. Schmidt, Physical Review Letters 132 (2024).","mla":"Krenz, Marvin, et al. “Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface.” <i>Physical Review Letters</i>, vol. 132, no. 7, 076201, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevlett.132.076201\">10.1103/physrevlett.132.076201</a>.","bibtex":"@article{Krenz_Gerstmann_Schmidt_2024, title={Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface}, volume={132}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.132.076201\">10.1103/physrevlett.132.076201</a>}, number={7076201}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Krenz, Marvin and Gerstmann, Uwe and Schmidt, Wolf Gero}, year={2024} }","apa":"Krenz, M., Gerstmann, U., &#38; Schmidt, W. G. (2024). Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface. <i>Physical Review Letters</i>, <i>132</i>(7), Article 076201. <a href=\"https://doi.org/10.1103/physrevlett.132.076201\">https://doi.org/10.1103/physrevlett.132.076201</a>","chicago":"Krenz, Marvin, Uwe Gerstmann, and Wolf Gero Schmidt. “Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface.” <i>Physical Review Letters</i> 132, no. 7 (2024). <a href=\"https://doi.org/10.1103/physrevlett.132.076201\">https://doi.org/10.1103/physrevlett.132.076201</a>.","ieee":"M. Krenz, U. Gerstmann, and W. G. Schmidt, “Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface,” <i>Physical Review Letters</i>, vol. 132, no. 7, Art. no. 076201, 2024, doi: <a href=\"https://doi.org/10.1103/physrevlett.132.076201\">10.1103/physrevlett.132.076201</a>.","ama":"Krenz M, Gerstmann U, Schmidt WG. Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface. <i>Physical Review Letters</i>. 2024;132(7). doi:<a href=\"https://doi.org/10.1103/physrevlett.132.076201\">10.1103/physrevlett.132.076201</a>"},"intvolume":"       132","year":"2024"},{"type":"journal_article","publication":"APL Quantum","status":"public","abstract":[{"text":"<jats:p>We theoretically investigate strategies for the deterministic creation of trains of time-bin entangled photons using an individual quantum emitter described by a Λ-type electronic system. We explicitly demonstrate the theoretical generation of linear cluster states with substantial numbers of entangled photonic qubits in full microscopic numerical simulations. The underlying scheme is based on the manipulation of ground state coherences through precise optical driving. One important finding is that the most easily accessible quality metrics, the achievable rotation fidelities, fall short in assessing the actual quantum correlations of the emitted photons in the face of losses. To address this, we explicitly calculate stabilizer generator expectation values as a superior gauge for the quantum properties of the generated many-photon state. With widespread applicability in other emitter and excitation–emission schemes also, our work lays the conceptual foundations for an in-depth practical analysis of time-bin entanglement based on full numerical simulations with predictive capabilities for realistic systems and setups, including losses and imperfections. The specific results shown in the present work illustrate that with controlled minimization of losses and realistic system parameters for quantum-dot type systems, useful linear cluster states of significant lengths can be generated in the calculations, discussing the possibility of scalability for quantum information processing endeavors.</jats:p>","lang":"eng"}],"user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"27"},{"_id":"429"},{"_id":"230"},{"_id":"623"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen","_id":"173"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - Project Area C","_id":"56"}],"_id":"62868","language":[{"iso":"eng"}],"article_number":"036110","issue":"3","publication_status":"published","publication_identifier":{"issn":["2835-0103"]},"citation":{"apa":"Bauch, D., Köcher, N., Heinisch, N., &#38; Schumacher, S. (2024). Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>, <i>1</i>(3), Article 036110. <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>","bibtex":"@article{Bauch_Köcher_Heinisch_Schumacher_2024, title={Time-bin entanglement in the deterministic generation of linear photonic cluster states}, volume={1}, DOI={<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>}, number={3036110}, journal={APL Quantum}, publisher={AIP Publishing}, author={Bauch, David and Köcher, Nikolas and Heinisch, Nils and Schumacher, Stefan}, year={2024} }","short":"D. Bauch, N. Köcher, N. Heinisch, S. Schumacher, APL Quantum 1 (2024).","mla":"Bauch, David, et al. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i>, vol. 1, no. 3, 036110, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>.","ama":"Bauch D, Köcher N, Heinisch N, Schumacher S. Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>. 2024;1(3). doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>","chicago":"Bauch, David, Nikolas Köcher, Nils Heinisch, and Stefan Schumacher. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i> 1, no. 3 (2024). <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>.","ieee":"D. Bauch, N. Köcher, N. Heinisch, and S. Schumacher, “Time-bin entanglement in the deterministic generation of linear photonic cluster states,” <i>APL Quantum</i>, vol. 1, no. 3, Art. no. 036110, 2024, doi: <a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>."},"intvolume":"         1","year":"2024","author":[{"first_name":"David","last_name":"Bauch","full_name":"Bauch, David"},{"first_name":"Nikolas","full_name":"Köcher, Nikolas","id":"79191","last_name":"Köcher"},{"first_name":"Nils","last_name":"Heinisch","orcid":"0009-0006-0984-2097","id":"90283","full_name":"Heinisch, Nils"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","orcid":"0000-0003-4042-4951","last_name":"Schumacher"}],"date_created":"2025-12-04T12:35:53Z","volume":1,"publisher":"AIP Publishing","date_updated":"2025-12-05T13:55:00Z","doi":"10.1063/5.0214197","title":"Time-bin entanglement in the deterministic generation of linear photonic cluster states"},{"issue":"6","publication_identifier":{"issn":["3004-9261"]},"publication_status":"published","intvolume":"         6","citation":{"short":"V. Neßlinger, J. Atlanov, G. Grundmeier, Discover Applied Sciences 6 (2024).","mla":"Neßlinger, Vanessa, et al. “Interactions of Polyvinyl Acetate Dispersions with Nanostructured Superhydrophilic and Superhydrophobic Ti6Al4V Alloy Surfaces.” <i>Discover Applied Sciences</i>, vol. 6, no. 6, 294, Springer Science and Business Media LLC, 2024, doi:<a href=\"https://doi.org/10.1007/s42452-024-05916-z\">10.1007/s42452-024-05916-z</a>.","bibtex":"@article{Neßlinger_Atlanov_Grundmeier_2024, title={Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces}, volume={6}, DOI={<a href=\"https://doi.org/10.1007/s42452-024-05916-z\">10.1007/s42452-024-05916-z</a>}, number={6294}, journal={Discover Applied Sciences}, publisher={Springer Science and Business Media LLC}, author={Neßlinger, Vanessa and Atlanov, Jan and Grundmeier, Guido}, year={2024} }","apa":"Neßlinger, V., Atlanov, J., &#38; Grundmeier, G. (2024). Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces. <i>Discover Applied Sciences</i>, <i>6</i>(6), Article 294. <a href=\"https://doi.org/10.1007/s42452-024-05916-z\">https://doi.org/10.1007/s42452-024-05916-z</a>","chicago":"Neßlinger, Vanessa, Jan Atlanov, and Guido Grundmeier. “Interactions of Polyvinyl Acetate Dispersions with Nanostructured Superhydrophilic and Superhydrophobic Ti6Al4V Alloy Surfaces.” <i>Discover Applied Sciences</i> 6, no. 6 (2024). <a href=\"https://doi.org/10.1007/s42452-024-05916-z\">https://doi.org/10.1007/s42452-024-05916-z</a>.","ieee":"V. Neßlinger, J. Atlanov, and G. Grundmeier, “Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces,” <i>Discover Applied Sciences</i>, vol. 6, no. 6, Art. no. 294, 2024, doi: <a href=\"https://doi.org/10.1007/s42452-024-05916-z\">10.1007/s42452-024-05916-z</a>.","ama":"Neßlinger V, Atlanov J, Grundmeier G. Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces. <i>Discover Applied Sciences</i>. 2024;6(6). doi:<a href=\"https://doi.org/10.1007/s42452-024-05916-z\">10.1007/s42452-024-05916-z</a>"},"year":"2024","volume":6,"date_created":"2025-12-08T08:32:26Z","author":[{"id":"54649","full_name":"Neßlinger, Vanessa","orcid":"0000-0001-9416-1646","last_name":"Neßlinger","first_name":"Vanessa"},{"full_name":"Atlanov, Jan","last_name":"Atlanov","first_name":"Jan"},{"first_name":"Guido","last_name":"Grundmeier","full_name":"Grundmeier, Guido","id":"194"}],"date_updated":"2025-12-08T08:33:00Z","publisher":"Springer Science and Business Media LLC","doi":"10.1007/s42452-024-05916-z","title":"Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces","publication":"Discover Applied Sciences","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Nanostructured bilayer thin films with superhydrophobic and superhydrophilic surfaces were prepared using Ti6Al4V alloy substrates which allowed for the comparative analysis of polyvinyl acetate (PVAc) particle adsorption as a function of the interface structure. The PVAc particles were obtained from emulsion polymerization of vinyl acetate. A superhydrophilic TiO<jats:sub>2</jats:sub> nanofiber-based 3D network was created on the Ti6Al4V alloy substrate by application of a hydrothermal method. Subsequent UV-grafting of ultra-thin polydimethylsiloxane (PDMS) layers resulted in a superhydrophobic surface. The modification steps were followed via Diffuse Reflectance Infrared Fourier Transform Spectroscopy, X-ray Photoelectron Spectroscopy, Field Emission-Scanning Electron Microscopy, contact angle and Electrochemical Impedance Spectroscopy. A mechanism for the adsorption of PVAc at the two electrolyte/substrate interfaces could be revealed.</jats:p>"}],"department":[{"_id":"302"}],"user_id":"54649","_id":"62942","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"language":[{"iso":"eng"}],"article_number":"294"},{"year":"2024","issue":"1","title":"Scalable quantum detector tomography by high-performance computing","date_created":"2024-04-04T08:43:18Z","publisher":"IOP Publishing","abstract":[{"lang":"eng","text":"At large scales, quantum systems may become advantageous over their classical counterparts at performing certain tasks. Developing tools to analyze these systems at the relevant scales, in a manner consistent with quantum mechanics, is therefore critical to benchmarking performance and characterizing their operation. While classical computational approaches cannot perform like-for-like computations of quantum systems beyond a certain scale, classical high-performance computing (HPC) may nevertheless be useful for precisely these characterization and certification tasks. By developing open-source customized algorithms using high-performance computing, we perform quantum tomography on a megascale quantum photonic detector covering a Hilbert space of 106. This requires finding 108 elements of the matrix corresponding to the positive operator valued measure (POVM), the quantum description of the detector, and is achieved in minutes of computation time. Moreover, by exploiting the structure of the problem, we achieve highly efficient parallel scaling, paving the way for quantum objects up to a system size of 1012 elements to be reconstructed using this method. In general, this shows that a consistent quantum mechanical description of quantum phenomena is applicable at everyday scales. More concretely, this enables the reconstruction of large-scale quantum sources, processes and detectors used in computation and sampling tasks, which may be necessary to prove their nonclassical character or quantum computational advantage."}],"publication":"Quantum Science and Technology","language":[{"iso":"eng"}],"external_id":{"arxiv":["2404.02844"]},"citation":{"ama":"Schapeler T, Schade R, Lass M, Plessl C, Bartley T. Scalable quantum detector tomography by high-performance computing. <i>Quantum Science and Technology</i>. 2024;10(1). doi:<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>","chicago":"Schapeler, Timon, Robert Schade, Michael Lass, Christian Plessl, and Tim Bartley. “Scalable Quantum Detector Tomography by High-Performance Computing.” <i>Quantum Science and Technology</i> 10, no. 1 (2024). <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">https://doi.org/10.1088/2058-9565/ad8511</a>.","ieee":"T. Schapeler, R. Schade, M. Lass, C. Plessl, and T. Bartley, “Scalable quantum detector tomography by high-performance computing,” <i>Quantum Science and Technology</i>, vol. 10, no. 1, 2024, doi: <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>.","short":"T. Schapeler, R. Schade, M. Lass, C. Plessl, T. Bartley, Quantum Science and Technology 10 (2024).","mla":"Schapeler, Timon, et al. “Scalable Quantum Detector Tomography by High-Performance Computing.” <i>Quantum Science and Technology</i>, vol. 10, no. 1, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>.","bibtex":"@article{Schapeler_Schade_Lass_Plessl_Bartley_2024, title={Scalable quantum detector tomography by high-performance computing}, volume={10}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/ad8511\">10.1088/2058-9565/ad8511</a>}, number={1}, journal={Quantum Science and Technology}, publisher={IOP Publishing}, author={Schapeler, Timon and Schade, Robert and Lass, Michael and Plessl, Christian and Bartley, Tim}, year={2024} }","apa":"Schapeler, T., Schade, R., Lass, M., Plessl, C., &#38; Bartley, T. (2024). Scalable quantum detector tomography by high-performance computing. <i>Quantum Science and Technology</i>, <i>10</i>(1). <a href=\"https://doi.org/10.1088/2058-9565/ad8511\">https://doi.org/10.1088/2058-9565/ad8511</a>"},"intvolume":"        10","main_file_link":[{"open_access":"1"}],"doi":"10.1088/2058-9565/ad8511","author":[{"last_name":"Schapeler","orcid":"0000-0001-7652-1716","full_name":"Schapeler, Timon","id":"55629","first_name":"Timon"},{"first_name":"Robert","last_name":"Schade","orcid":"0000-0002-6268-5397","id":"75963","full_name":"Schade, Robert"},{"full_name":"Lass, Michael","id":"24135","orcid":"0000-0002-5708-7632","last_name":"Lass","first_name":"Michael"},{"last_name":"Plessl","orcid":"0000-0001-5728-9982","id":"16153","full_name":"Plessl, Christian","first_name":"Christian"},{"last_name":"Bartley","full_name":"Bartley, Tim","id":"49683","first_name":"Tim"}],"volume":10,"oa":"1","date_updated":"2025-12-16T11:32:12Z","status":"public","type":"journal_article","user_id":"55629","department":[{"_id":"27"},{"_id":"623"},{"_id":"15"}],"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"239","name":"ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications"},{"name":"PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"}],"_id":"53202"},{"has_accepted_license":"1","page":"1113–1116","citation":{"apa":"Koch, K., Claes, L., Jurgelucks, B., Meihost, L., &#38; Henning, B. (2024). Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze. In D. Gesellschaft für Akustik e.V. (Ed.), <i>Fortschritte der Akustik - DAGA 2024</i> (pp. 1113–1116).","short":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, B. Henning, in: D. Gesellschaft für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2024, 2024, pp. 1113–1116.","bibtex":"@inproceedings{Koch_Claes_Jurgelucks_Meihost_Henning_2024, title={Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze}, booktitle={Fortschritte der Akustik - DAGA 2024}, author={Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars and Henning, Bernd}, editor={Gesellschaft für Akustik e.V., Deutsche }, year={2024}, pages={1113–1116} }","mla":"Koch, Kevin, et al. “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze.” <i>Fortschritte der Akustik - DAGA 2024</i>, edited by Deutsche  Gesellschaft für Akustik e.V., 2024, pp. 1113–1116.","ieee":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, and B. Henning, “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze,” in <i>Fortschritte der Akustik - DAGA 2024</i>, 2024, pp. 1113–1116.","chicago":"Koch, Kevin, Leander Claes, Benjamin Jurgelucks, Lars Meihost, and Bernd Henning. “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze.” In <i>Fortschritte der Akustik - DAGA 2024</i>, edited by Deutsche  Gesellschaft für Akustik e.V., 1113–1116, 2024.","ama":"Koch K, Claes L, Jurgelucks B, Meihost L, Henning B. Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze. In: Gesellschaft für Akustik e.V. D, ed. <i>Fortschritte der Akustik - DAGA 2024</i>. ; 2024:1113–1116."},"year":"2024","author":[{"first_name":"Kevin","last_name":"Koch","full_name":"Koch, Kevin"},{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"last_name":"Jurgelucks","full_name":"Jurgelucks, Benjamin","first_name":"Benjamin"},{"first_name":"Lars","id":"24769","full_name":"Meihost, Lars","last_name":"Meihost"},{"full_name":"Henning, Bernd","id":"213","last_name":"Henning","first_name":"Bernd"}],"date_created":"2024-05-02T13:34:01Z","date_updated":"2026-01-05T07:56:42Z","oa":"1","conference":{"start_date":"2024-03-18","end_date":"2024-03-21"},"title":"Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze","publication":"Fortschritte der Akustik - DAGA 2024","type":"conference","status":"public","file":[{"content_type":"application/pdf","relation":"main_file","date_updated":"2024-05-02T14:06:28Z","creator":"leanderc","date_created":"2024-05-02T13:36:51Z","file_size":365911,"file_id":"53825","file_name":"daga2024koch.pdf","access_level":"open_access"}],"editor":[{"full_name":"Gesellschaft für Akustik e.V., Deutsche ","last_name":"Gesellschaft für Akustik e.V.","first_name":"Deutsche "}],"department":[{"_id":"49"}],"user_id":"11829","_id":"53824","project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"language":[{"iso":"ger"}],"file_date_updated":"2024-05-02T14:06:28Z","ddc":["620"]},{"date_updated":"2026-01-05T07:57:46Z","publisher":"Zenodo","date_created":"2024-07-31T14:10:12Z","author":[{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"first_name":"Olga","full_name":"Friesen, Olga","id":"44026","last_name":"Friesen"},{"first_name":"Leander","full_name":"Claes, Leander","id":"11829","orcid":"0000-0002-4393-268X","last_name":"Claes"}],"title":"Randomised material parameter impedance dataset of piezoelectric rings","doi":"10.5281/zenodo.13143680","year":"2024","citation":{"bibtex":"@book{Koch_Friesen_Claes_2024, title={Randomised material parameter impedance dataset of piezoelectric rings}, DOI={<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>}, publisher={Zenodo}, author={Koch, Kevin and Friesen, Olga and Claes, Leander}, year={2024} }","short":"K. Koch, O. Friesen, L. Claes, Randomised Material Parameter Impedance Dataset of Piezoelectric Rings, Zenodo, 2024.","mla":"Koch, Kevin, et al. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>.","apa":"Koch, K., Friesen, O., &#38; Claes, L. (2024). <i>Randomised material parameter impedance dataset of piezoelectric rings</i>. Zenodo. <a href=\"https://doi.org/10.5281/zenodo.13143680\">https://doi.org/10.5281/zenodo.13143680</a>","ieee":"K. Koch, O. Friesen, and L. Claes, <i>Randomised material parameter impedance dataset of piezoelectric rings</i>. Zenodo, 2024.","chicago":"Koch, Kevin, Olga Friesen, and Leander Claes. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo, 2024. <a href=\"https://doi.org/10.5281/zenodo.13143680\">https://doi.org/10.5281/zenodo.13143680</a>.","ama":"Koch K, Friesen O, Claes L. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>"},"project":[{"_id":"90","name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"55470","user_id":"11829","department":[{"_id":"49"}],"type":"research_data","status":"public"},{"project":[{"_id":"90","name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"53662","user_id":"11829","department":[{"_id":"49"}],"type":"research_data","status":"public","publisher":"zenodo","date_updated":"2026-01-05T07:56:58Z","author":[{"first_name":"Kevin","full_name":"Koch, Kevin","last_name":"Koch"},{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander"}],"date_created":"2024-04-25T13:54:49Z","title":"Randomised material parameter piezoelectric impedance dataset with structured electrodes","doi":"10.5281/ZENODO.11064206","year":"2024","citation":{"chicago":"Koch, Kevin, and Leander Claes. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo, 2024. <a href=\"https://doi.org/10.5281/ZENODO.11064206\">https://doi.org/10.5281/ZENODO.11064206</a>.","ieee":"K. Koch and L. Claes, <i>Randomised material parameter piezoelectric impedance dataset with structured electrodes</i>. zenodo, 2024.","ama":"Koch K, Claes L. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>","apa":"Koch, K., &#38; Claes, L. (2024). <i>Randomised material parameter piezoelectric impedance dataset with structured electrodes</i>. zenodo. <a href=\"https://doi.org/10.5281/ZENODO.11064206\">https://doi.org/10.5281/ZENODO.11064206</a>","bibtex":"@book{Koch_Claes_2024, title={Randomised material parameter piezoelectric impedance dataset with structured electrodes}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>}, publisher={zenodo}, author={Koch, Kevin and Claes, Leander}, year={2024} }","short":"K. Koch, L. Claes, Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes, zenodo, 2024.","mla":"Koch, Kevin, and Leander Claes. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>."}},{"date_created":"2024-07-29T12:34:21Z","author":[{"first_name":"Leander","full_name":"Claes, Leander","id":"11829","orcid":"0000-0002-4393-268X","last_name":"Claes"},{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga"},{"last_name":"Meihost","id":"24769","full_name":"Meihost, Lars","first_name":"Lars"}],"date_updated":"2026-01-05T07:57:27Z","title":"Machine learning in inverse measurement problems: An application to piezoelectric material characterisation","citation":{"apa":"Claes, L., Koch, K., Friesen, O., &#38; Meihost, L. (2024). <i>Machine learning in inverse measurement problems: An application to piezoelectric material characterisation</i>.","mla":"Claes, Leander, et al. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. 2024.","bibtex":"@book{Claes_Koch_Friesen_Meihost_2024, place={International Workshop on Piezoelectric Materials and Applications (IWPMA)}, title={Machine learning in inverse measurement problems: An application to piezoelectric material characterisation}, author={Claes, Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}, year={2024} }","short":"L. Claes, K. Koch, O. Friesen, L. Meihost, Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation, International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.","ieee":"L. Claes, K. Koch, O. Friesen, and L. Meihost, <i>Machine learning in inverse measurement problems: An application to piezoelectric material characterisation</i>. International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.","chicago":"Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.","ama":"Claes L, Koch K, Friesen O, Meihost L. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>.; 2024."},"year":"2024","place":"International Workshop on Piezoelectric Materials and Applications (IWPMA)","department":[{"_id":"49"}],"user_id":"11829","_id":"55416","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"language":[{"iso":"eng"}],"type":"misc","status":"public"},{"publisher":"Walter de Gruyter GmbH","date_updated":"2026-01-05T07:59:09Z","author":[{"last_name":"Koch","full_name":"Koch, Kevin","first_name":"Kevin"},{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander"},{"first_name":"Benjamin","last_name":"Jurgelucks","full_name":"Jurgelucks, Benjamin"},{"first_name":"Lars","full_name":"Meihost, Lars","id":"24769","last_name":"Meihost"}],"date_created":"2024-05-17T08:26:55Z","title":"Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter","main_file_link":[{"url":"https://www.degruyter.com/document/doi/10.1515/teme-2024-0099/html"}],"doi":"10.1515/teme-2024-0099","quality_controlled":"1","year":"2024","citation":{"ieee":"K. Koch, L. Claes, B. Jurgelucks, and L. Meihost, “Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter,” <i>tm - Technisches Messen</i>, 2024, doi: <a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>.","chicago":"Koch, Kevin, Leander Claes, Benjamin Jurgelucks, and Lars Meihost. “Neuronale Netze Zur Startwertschätzung Bei Der Identifikation Piezoelektrischer Materialparameter.” <i>Tm - Technisches Messen</i>, 2024. <a href=\"https://doi.org/10.1515/teme-2024-0099\">https://doi.org/10.1515/teme-2024-0099</a>.","ama":"Koch K, Claes L, Jurgelucks B, Meihost L. Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. <i>tm - Technisches Messen</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>","mla":"Koch, Kevin, et al. “Neuronale Netze Zur Startwertschätzung Bei Der Identifikation Piezoelektrischer Materialparameter.” <i>Tm - Technisches Messen</i>, Walter de Gruyter GmbH, 2024, doi:<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>.","short":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, Tm - Technisches Messen (2024).","bibtex":"@article{Koch_Claes_Jurgelucks_Meihost_2024, title={Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter}, DOI={<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>}, journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH}, author={Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars}, year={2024} }","apa":"Koch, K., Claes, L., Jurgelucks, B., &#38; Meihost, L. (2024). Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. <i>Tm - Technisches Messen</i>. <a href=\"https://doi.org/10.1515/teme-2024-0099\">https://doi.org/10.1515/teme-2024-0099</a>"},"project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"_id":"54314","user_id":"11829","department":[{"_id":"49"}],"article_type":"original","alternative_title":["Neural networks for initial value estimation in the identification of piezoelectric material parameters"],"language":[{"iso":"eng"}],"type":"journal_article","publication":"tm - Technisches Messen","status":"public"},{"keyword":["Hybride Werkstoffverbunde","Eigenspanungen","FFT-basierte Galerkin-Methode","Mikromechanik","Finite-Elemente-Methode"],"language":[{"iso":"ger"}],"extern":"1","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"56654","user_id":"71335","department":[{"_id":"9"},{"_id":"149"},{"_id":"321"}],"abstract":[{"text":"Residual stresses in directly joined laminates made of steel and carbon fiber reinforced epoxy resin reduce the interface and bond strength and thus have to be taken into account for the strength analysis of structural components. For a holistic description of residual stresses, a thermo-chemo-mechanical constitutive model is introduced in the present work and presented for the multi-scale analysis of residual stress patterns. In this context, the analysis of representative unit cells with regular and stochastic distribution of fibers gives information about the associated deformation and stress fields. Dehomogenization at macroscopically highly stressed regions, characterized by local stress peaks, reveals the effect of gradient deformation in the microstructure. Another aspect of this work is the development of FFT-based Galerkin methods, which allows an evaluation of the effect of defect densities, heterogeneities and morphologies on the applicability of the incremental hole drilling method. It could be demonstrated that the incremental hole drilling method is particularly sensitive to defects running along the surface.","lang":"eng"},{"text":"Eigenspannungen in direktgefügten Werkstoffverbunden aus Stahl und kohlenstofffaserverstärktem Epoxidharz reduzieren die Grenzschicht- und Verbundfestigkeit und sind somit für die Festigkeitsbeurteilung von Strukturen zwingend zu berücksichtigen. Zur ganzheitlichen Beschreibung von Eigenspannungen wird in der vorliegenden Arbeit ein thermo-chemo-mechanisches Konstitutivmodell für die skalenübergreifende Bewertung von Eigenspannungsverteilungen vorgestellt. Die Analyse von repräsentativen Einheitszellen mit regulärer und stochastischer Verteilung von Fasern liefert in diesem Zusammenhang Informationen über die zugehörigen Deformations- und Spannungsfelder. Die Dehomogenisierung an makroskopisch hochbelasteten Bereichen, die durch lokale Spannungsüberhöhungen gekennzeichnet sind, zeigt die Auswirkung der gradientenbehafteten Deformation in der Mikrostruktur. Ein weiterer Aspekt dieser Arbeit ist die Entwicklung FFT-basierter Galerkin-Methoden, die es erstmalig erlauben, eine Bewertung der Auswirkung von Defektdichte, Heterogenität und Morphologie auf die Anwendbarkeit der inkrementellen Bohrlochmethode vorzunehmen. Es konnte nachgewiesen werden, dass die inkrementelle Bohrlochmethode insbesondere auf an der Oberfläche verlaufende Defekte sensitiv reagiert.","lang":"ger"}],"status":"public","type":"dissertation","title":"Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden","publisher":"BoD - Books on Demand","date_updated":"2026-03-19T10:57:29Z","date_created":"2024-10-17T07:56:02Z","supervisor":[{"last_name":"Tröster","full_name":"Tröster, Thomas","first_name":"Thomas"},{"first_name":"Thomas","last_name":"Niendorf","full_name":"Niendorf, Thomas"}],"author":[{"full_name":"Tinkloh, Steffen Rainer","last_name":"Tinkloh","first_name":"Steffen Rainer"}],"year":"2024","citation":{"apa":"Tinkloh, S. R. (2024). <i>Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden</i>. BoD - Books on Demand.","bibtex":"@book{Tinkloh_2024, title={Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden}, publisher={BoD - Books on Demand}, author={Tinkloh, Steffen Rainer}, year={2024} }","short":"S.R. Tinkloh, Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden, BoD - Books on Demand, 2024.","mla":"Tinkloh, Steffen Rainer. <i>Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden</i>. BoD - Books on Demand, 2024.","ieee":"S. R. Tinkloh, <i>Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden</i>. BoD - Books on Demand, 2024.","chicago":"Tinkloh, Steffen Rainer. <i>Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden</i>. BoD - Books on Demand, 2024.","ama":"Tinkloh SR. <i>Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden</i>. BoD - Books on Demand; 2024."},"page":"168","publication_status":"published","publication_identifier":{"isbn":["9783757887650"]}},{"status":"public","type":"conference","language":[{"iso":"eng"}],"user_id":"55631","department":[{"_id":"78"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"56481","citation":{"ama":"Berganski C, Jentzsch F, Platzner M, Kuhmichel M, Giefers H. FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers. In: ; 2024.","chicago":"Berganski, Christoph, Felix Jentzsch, Marco Platzner, Max Kuhmichel, and Heiner Giefers. “FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers,” 2024.","ieee":"C. Berganski, F. Jentzsch, M. Platzner, M. Kuhmichel, and H. Giefers, “FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers,” presented at the International Conference on Field Programmable Technology, Sydney, 2024.","bibtex":"@inproceedings{Berganski_Jentzsch_Platzner_Kuhmichel_Giefers_2024, title={FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers}, author={Berganski, Christoph and Jentzsch, Felix and Platzner, Marco and Kuhmichel, Max and Giefers, Heiner}, year={2024} }","short":"C. Berganski, F. Jentzsch, M. Platzner, M. Kuhmichel, H. Giefers, in: 2024.","mla":"Berganski, Christoph, et al. <i>FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers</i>. 2024.","apa":"Berganski, C., Jentzsch, F., Platzner, M., Kuhmichel, M., &#38; Giefers, H. (2024). <i>FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers</i>. International Conference on Field Programmable Technology, Sydney."},"year":"2024","conference":{"end_date":"2024-12-12","location":"Sydney","name":"International Conference on Field Programmable Technology","start_date":"2024-12-10"},"title":"FINN-T: Compiling Custom Dataflow Accelerators for Quantized Transformers","author":[{"first_name":"Christoph","last_name":"Berganski","full_name":"Berganski, Christoph","id":"98854"},{"first_name":"Felix","id":"55631","full_name":"Jentzsch, Felix","orcid":"0000-0003-4987-5708","last_name":"Jentzsch"},{"id":"398","full_name":"Platzner, Marco","last_name":"Platzner","first_name":"Marco"},{"first_name":"Max","full_name":"Kuhmichel, Max","last_name":"Kuhmichel"},{"full_name":"Giefers, Heiner","last_name":"Giefers","first_name":"Heiner"}],"date_created":"2024-10-10T07:49:13Z","date_updated":"2026-04-27T14:14:40Z"},{"language":[{"iso":"eng"}],"user_id":"55631","department":[{"_id":"78"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"54245","status":"public","type":"mastersthesis","title":"Exploring Custom FPGA Accelerators for DNN-based RF Fingerprinting","supervisor":[{"first_name":"Felix","last_name":"Jentzsch","orcid":"0000-0003-4987-5708","full_name":"Jentzsch, Felix","id":"55631"},{"id":"398","full_name":"Platzner, Marco","last_name":"Platzner","first_name":"Marco"}],"date_created":"2024-05-13T14:00:01Z","author":[{"last_name":"Henke","full_name":"Henke, Luca-Sebastian","first_name":"Luca-Sebastian"}],"date_updated":"2026-04-27T14:20:23Z","citation":{"short":"L.-S. Henke, Exploring Custom FPGA Accelerators for DNN-Based RF Fingerprinting, 2024.","bibtex":"@book{Henke_2024, title={Exploring Custom FPGA Accelerators for DNN-based RF Fingerprinting}, author={Henke, Luca-Sebastian}, year={2024} }","mla":"Henke, Luca-Sebastian. <i>Exploring Custom FPGA Accelerators for DNN-Based RF Fingerprinting</i>. 2024.","apa":"Henke, L.-S. (2024). <i>Exploring Custom FPGA Accelerators for DNN-based RF Fingerprinting</i>.","chicago":"Henke, Luca-Sebastian. <i>Exploring Custom FPGA Accelerators for DNN-Based RF Fingerprinting</i>, 2024.","ieee":"L.-S. Henke, <i>Exploring Custom FPGA Accelerators for DNN-based RF Fingerprinting</i>. 2024.","ama":"Henke L-S. <i>Exploring Custom FPGA Accelerators for DNN-Based RF Fingerprinting</i>.; 2024."},"year":"2024"},{"title":"On the Universal Transformation of Data-Driven Models to Control Systems","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S0005109822007075/pdfft?isDTMRedir=true&download=true"}],"doi":"10.1016/j.automatica.2022.110840","date_updated":"2023-01-07T12:01:58Z","oa":"1","publisher":"Elsevier","author":[{"id":"47427","full_name":"Peitz, Sebastian","last_name":"Peitz","orcid":"0000-0002-3389-793X","first_name":"Sebastian"},{"first_name":"Katharina","id":"32829","full_name":"Bieker, Katharina","last_name":"Bieker"}],"date_created":"2021-02-10T07:04:15Z","volume":149,"year":"2023","citation":{"apa":"Peitz, S., &#38; Bieker, K. (2023). On the Universal Transformation of Data-Driven Models to Control Systems. <i>Automatica</i>, <i>149</i>, Article 110840. <a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">https://doi.org/10.1016/j.automatica.2022.110840</a>","bibtex":"@article{Peitz_Bieker_2023, title={On the Universal Transformation of Data-Driven Models to Control Systems}, volume={149}, DOI={<a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">10.1016/j.automatica.2022.110840</a>}, number={110840}, journal={Automatica}, publisher={Elsevier}, author={Peitz, Sebastian and Bieker, Katharina}, year={2023} }","mla":"Peitz, Sebastian, and Katharina Bieker. “On the Universal Transformation of Data-Driven Models to Control Systems.” <i>Automatica</i>, vol. 149, 110840, Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">10.1016/j.automatica.2022.110840</a>.","short":"S. Peitz, K. Bieker, Automatica 149 (2023).","chicago":"Peitz, Sebastian, and Katharina Bieker. “On the Universal Transformation of Data-Driven Models to Control Systems.” <i>Automatica</i> 149 (2023). <a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">https://doi.org/10.1016/j.automatica.2022.110840</a>.","ieee":"S. Peitz and K. Bieker, “On the Universal Transformation of Data-Driven Models to Control Systems,” <i>Automatica</i>, vol. 149, Art. no. 110840, 2023, doi: <a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">10.1016/j.automatica.2022.110840</a>.","ama":"Peitz S, Bieker K. On the Universal Transformation of Data-Driven Models to Control Systems. <i>Automatica</i>. 2023;149. doi:<a href=\"https://doi.org/10.1016/j.automatica.2022.110840\">10.1016/j.automatica.2022.110840</a>"},"intvolume":"       149","publication_status":"published","article_number":"110840","language":[{"iso":"eng"}],"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"21199","user_id":"47427","department":[{"_id":"101"},{"_id":"655"}],"abstract":[{"lang":"eng","text":"As in almost every other branch of science, the major advances in data\r\nscience and machine learning have also resulted in significant improvements\r\nregarding the modeling and simulation of nonlinear dynamical systems. It is\r\nnowadays possible to make accurate medium to long-term predictions of highly\r\ncomplex systems such as the weather, the dynamics within a nuclear fusion\r\nreactor, of disease models or the stock market in a very efficient manner. In\r\nmany cases, predictive methods are advertised to ultimately be useful for\r\ncontrol, as the control of high-dimensional nonlinear systems is an engineering\r\ngrand challenge with huge potential in areas such as clean and efficient energy\r\nproduction, or the development of advanced medical devices. However, the\r\nquestion of how to use a predictive model for control is often left unanswered\r\ndue to the associated challenges, namely a significantly higher system\r\ncomplexity, the requirement of much larger data sets and an increased and often\r\nproblem-specific modeling effort. To solve these issues, we present a universal\r\nframework (which we call QuaSiModO:\r\nQuantization-Simulation-Modeling-Optimization) to transform arbitrary\r\npredictive models into control systems and use them for feedback control. The\r\nadvantages of our approach are a linear increase in data requirements with\r\nrespect to the control dimension, performance guarantees that rely exclusively\r\non the accuracy of the predictive model, and only little prior knowledge\r\nrequirements in control theory to solve complex control problems. In particular\r\nthe latter point is of key importance to enable a large number of researchers\r\nand practitioners to exploit the ever increasing capabilities of predictive\r\nmodels for control in a straight-forward and systematic fashion."}],"status":"public","type":"journal_article","publication":"Automatica"},{"file":[{"creator":"haebumb","date_created":"2023-01-09T17:46:05Z","date_updated":"2023-01-11T08:50:19Z","access_level":"open_access","file_id":"35607","file_name":"main.pdf","file_size":7185077,"content_type":"application/pdf","relation":"main_file"}],"abstract":[{"text":"Continuous Speech Separation (CSS) has been proposed to address speech overlaps during the analysis of realistic meeting-like conversations by eliminating any overlaps before further processing.\r\nCSS separates a recording of arbitrarily many speakers into a small number of overlap-free output channels, where each output channel may contain speech of multiple speakers.\r\nThis is often done by applying a conventional separation model trained with Utterance-level Permutation Invariant Training (uPIT), which exclusively maps a speaker to an output channel, in sliding window approach called stitching.\r\nRecently, we introduced an alternative training scheme called Graph-PIT that teaches the separation network to directly produce output streams in the required format without stitching.\r\nIt can handle an arbitrary number of speakers as long as never more of them overlap at the same time than the separator has output channels.\r\nIn this contribution, we further investigate the Graph-PIT training scheme.\r\nWe show in extended experiments that models trained with Graph-PIT also work in challenging reverberant conditions.\r\nModels trained in this way are able to perform segment-less CSS, i.e., without stitching, and achieve comparable and often better separation quality than the conventional CSS with uPIT and stitching.\r\nWe simplify the training schedule for Graph-PIT with the recently proposed Source Aggregated Signal-to-Distortion Ratio (SA-SDR) loss.\r\nIt eliminates unfavorable properties of the previously used A-SDR loss and thus enables training with Graph-PIT from scratch.\r\nGraph-PIT training relaxes the constraints w.r.t. the allowed numbers of speakers and speaking patterns which allows using a larger variety of training data.\r\nFurthermore, we introduce novel signal-level evaluation metrics for meeting scenarios, namely the source-aggregated scale- and convolution-invariant Signal-to-Distortion Ratio (SA-SI-SDR and SA-CI-SDR), which are generalizations of the commonly used SDR-based metrics for the CSS case.","lang":"eng"}],"publication":"IEEE/ACM Transactions on Audio, Speech, and Language Processing","language":[{"iso":"eng"}],"ddc":["000"],"keyword":["Continuous Speech Separation","Source Separation","Graph-PIT","Dynamic Programming","Permutation Invariant Training"],"year":"2023","quality_controlled":"1","title":"Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria","date_created":"2023-01-09T17:24:17Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","status":"public","type":"journal_article","file_date_updated":"2023-01-11T08:50:19Z","article_type":"original","user_id":"49870","department":[{"_id":"54"}],"project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"35602","citation":{"mla":"von Neumann, Thilo, et al. “Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria.” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, vol. 31, Institute of Electrical and Electronics Engineers (IEEE), 2023, pp. 576–89, doi:<a href=\"https://doi.org/10.1109/taslp.2022.3228629\">10.1109/taslp.2022.3228629</a>.","short":"T. von Neumann, K. Kinoshita, C. Boeddeker, M. Delcroix, R. Haeb-Umbach, IEEE/ACM Transactions on Audio, Speech, and Language Processing 31 (2023) 576–589.","bibtex":"@article{von Neumann_Kinoshita_Boeddeker_Delcroix_Haeb-Umbach_2023, title={Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria}, volume={31}, DOI={<a href=\"https://doi.org/10.1109/taslp.2022.3228629\">10.1109/taslp.2022.3228629</a>}, journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={von Neumann, Thilo and Kinoshita, Keisuke and Boeddeker, Christoph and Delcroix, Marc and Haeb-Umbach, Reinhold}, year={2023}, pages={576–589} }","apa":"von Neumann, T., Kinoshita, K., Boeddeker, C., Delcroix, M., &#38; Haeb-Umbach, R. (2023). Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria. <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, <i>31</i>, 576–589. <a href=\"https://doi.org/10.1109/taslp.2022.3228629\">https://doi.org/10.1109/taslp.2022.3228629</a>","ama":"von Neumann T, Kinoshita K, Boeddeker C, Delcroix M, Haeb-Umbach R. Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria. <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>. 2023;31:576-589. doi:<a href=\"https://doi.org/10.1109/taslp.2022.3228629\">10.1109/taslp.2022.3228629</a>","ieee":"T. von Neumann, K. Kinoshita, C. Boeddeker, M. Delcroix, and R. Haeb-Umbach, “Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria,” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, vol. 31, pp. 576–589, 2023, doi: <a href=\"https://doi.org/10.1109/taslp.2022.3228629\">10.1109/taslp.2022.3228629</a>.","chicago":"Neumann, Thilo von, Keisuke Kinoshita, Christoph Boeddeker, Marc Delcroix, and Reinhold Haeb-Umbach. “Segment-Less Continuous Speech Separation of Meetings: Training and Evaluation Criteria.” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i> 31 (2023): 576–89. <a href=\"https://doi.org/10.1109/taslp.2022.3228629\">https://doi.org/10.1109/taslp.2022.3228629</a>."},"page":"576-589","intvolume":"        31","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["2329-9290","2329-9304"]},"doi":"10.1109/taslp.2022.3228629","author":[{"first_name":"Thilo","full_name":"von Neumann, Thilo","id":"49870","orcid":"https://orcid.org/0000-0002-7717-8670","last_name":"von Neumann"},{"last_name":"Kinoshita","full_name":"Kinoshita, Keisuke","first_name":"Keisuke"},{"id":"40767","full_name":"Boeddeker, Christoph","last_name":"Boeddeker","first_name":"Christoph"},{"full_name":"Delcroix, Marc","last_name":"Delcroix","first_name":"Marc"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"}],"volume":31,"date_updated":"2023-11-15T12:16:11Z","oa":"1"},{"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"}],"user_id":"79462","_id":"49634","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"article_number":"045410","type":"journal_article","status":"public","volume":108,"author":[{"first_name":"Isaac Azahel","last_name":"Ruiz Alvarado","orcid":"0000-0002-4710-1170","id":"79462","full_name":"Ruiz Alvarado, Isaac Azahel"},{"full_name":"Zare Pour, Mohammad Amin","last_name":"Zare Pour","first_name":"Mohammad Amin"},{"full_name":"Hannappel, Thomas","last_name":"Hannappel","first_name":"Thomas"},{"id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","first_name":"Wolf Gero"}],"date_updated":"2023-12-14T12:24:25Z","doi":"10.1103/physrevb.108.045410","publication_identifier":{"issn":["2469-9950","2469-9969"]},"publication_status":"published","intvolume":"       108","citation":{"ieee":"I. A. Ruiz Alvarado, M. A. Zare Pour, T. Hannappel, and W. G. Schmidt, “Structural fingerprints in the reflectance anisotropy of AlInP(001),” <i>Physical Review B</i>, vol. 108, no. 4, Art. no. 045410, 2023, doi: <a href=\"https://doi.org/10.1103/physrevb.108.045410\">10.1103/physrevb.108.045410</a>.","chicago":"Ruiz Alvarado, Isaac Azahel, Mohammad Amin Zare Pour, Thomas Hannappel, and Wolf Gero Schmidt. “Structural Fingerprints in the Reflectance Anisotropy of AlInP(001).” <i>Physical Review B</i> 108, no. 4 (2023). <a href=\"https://doi.org/10.1103/physrevb.108.045410\">https://doi.org/10.1103/physrevb.108.045410</a>.","ama":"Ruiz Alvarado IA, Zare Pour MA, Hannappel T, Schmidt WG. Structural fingerprints in the reflectance anisotropy of AlInP(001). <i>Physical Review B</i>. 2023;108(4). doi:<a href=\"https://doi.org/10.1103/physrevb.108.045410\">10.1103/physrevb.108.045410</a>","bibtex":"@article{Ruiz Alvarado_Zare Pour_Hannappel_Schmidt_2023, title={Structural fingerprints in the reflectance anisotropy of AlInP(001)}, volume={108}, DOI={<a href=\"https://doi.org/10.1103/physrevb.108.045410\">10.1103/physrevb.108.045410</a>}, number={4045410}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Ruiz Alvarado, Isaac Azahel and Zare Pour, Mohammad Amin and Hannappel, Thomas and Schmidt, Wolf Gero}, year={2023} }","mla":"Ruiz Alvarado, Isaac Azahel, et al. “Structural Fingerprints in the Reflectance Anisotropy of AlInP(001).” <i>Physical Review B</i>, vol. 108, no. 4, 045410, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevb.108.045410\">10.1103/physrevb.108.045410</a>.","short":"I.A. Ruiz Alvarado, M.A. Zare Pour, T. Hannappel, W.G. Schmidt, Physical Review B 108 (2023).","apa":"Ruiz Alvarado, I. A., Zare Pour, M. A., Hannappel, T., &#38; Schmidt, W. G. (2023). Structural fingerprints in the reflectance anisotropy of AlInP(001). <i>Physical Review B</i>, <i>108</i>(4), Article 045410. <a href=\"https://doi.org/10.1103/physrevb.108.045410\">https://doi.org/10.1103/physrevb.108.045410</a>"},"language":[{"iso":"eng"}],"publication":"Physical Review B","date_created":"2023-12-14T12:10:58Z","publisher":"American Physical Society (APS)","title":"Structural fingerprints in the reflectance anisotropy of AlInP(001)","issue":"4","year":"2023"},{"language":[{"iso":"eng"}],"keyword":["tet_topic_qd"],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>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, 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.</jats:p>"}],"publication":"Advanced Quantum Technologies","title":"On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs","date_created":"2023-11-03T10:07:38Z","publisher":"Wiley","year":"2023","user_id":"158","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"project":[{"grant_number":"231447078","name":"TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen (C09*)","_id":"173"},{"grant_number":"231447078","_id":"167","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"}],"_id":"48599","status":"public","type":"journal_article","main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/10.1002/qute.202300142","open_access":"1"}],"doi":"10.1002/qute.202300142","author":[{"first_name":"David","full_name":"Bauch, David","last_name":"Bauch"},{"first_name":"Dustin","last_name":"Siebert","full_name":"Siebert, Dustin"},{"first_name":"Klaus","id":"85353","full_name":"Jöns, Klaus","last_name":"Jöns"},{"first_name":"Jens","full_name":"Förstner, Jens","id":"158","last_name":"Förstner","orcid":"0000-0001-7059-9862"},{"first_name":"Stefan","id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951"}],"oa":"1","date_updated":"2023-12-21T10:41:17Z","citation":{"apa":"Bauch, D., Siebert, D., Jöns, K., Förstner, J., &#38; Schumacher, S. (2023). On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. <i>Advanced Quantum Technologies</i>. <a href=\"https://doi.org/10.1002/qute.202300142\">https://doi.org/10.1002/qute.202300142</a>","bibtex":"@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, DOI={<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>}, journal={Advanced Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }","mla":"Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” <i>Advanced Quantum Technologies</i>, Wiley, 2023, doi:<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>.","short":"D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum Technologies (2023).","chicago":"Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” <i>Advanced Quantum Technologies</i>, 2023. <a href=\"https://doi.org/10.1002/qute.202300142\">https://doi.org/10.1002/qute.202300142</a>.","ieee":"D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” <i>Advanced Quantum Technologies</i>, 2023, doi: <a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>.","ama":"Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. <i>Advanced Quantum Technologies</i>. Published online 2023. doi:<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>"},"related_material":{"record":[{"status":"public","relation":"earlier_version","id":"43246"}]},"publication_status":"published","publication_identifier":{"issn":["2511-9044","2511-9044"]}},{"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 $1550\\,\\mathrm{nm}$."}],"status":"public","type":"preprint","keyword":["tet_topic_phc","tet_topic_qd"],"language":[{"iso":"eng"}],"_id":"43246","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142 - C09: TRR 142 - Subproject C09","_id":"173","grant_number":"231447078"},{"_id":"167","name":"TRR 142 - B06: TRR 142 - Subproject B06","grant_number":"231447078"},{"name":"TRR 142: TRR 142","_id":"53","grant_number":"231447078"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"}],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"15"},{"_id":"35"},{"_id":"170"},{"_id":"297"}],"user_id":"16199","year":"2023","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.","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.","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} }","mla":"Bauch, David, et al. <i>On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using Tailored Cavity Designs</i>. 2023.","short":"D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, (2023).","apa":"Bauch, D., Siebert, D., Jöns, K., Förstner, J., &#38; Schumacher, S. (2023). <i>On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs</i>."},"related_material":{"record":[{"status":"public","relation":"later_version","id":"48599"}]},"title":"On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs","main_file_link":[{"url":"https://arxiv.org/pdf/2303.13871.pdf","open_access":"1"}],"oa":"1","date_updated":"2023-12-21T10:41:17Z","date_created":"2023-03-31T13:22:05Z","author":[{"first_name":"David","full_name":"Bauch, David","last_name":"Bauch"},{"first_name":"Dustin","full_name":"Siebert, Dustin","last_name":"Siebert"},{"first_name":"Klaus","last_name":"Jöns","id":"85353","full_name":"Jöns, Klaus"},{"full_name":"Förstner, Jens","id":"158","last_name":"Förstner","orcid":"0000-0001-7059-9862","first_name":"Jens"},{"first_name":"Stefan","id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951"}]},{"year":"2023","citation":{"apa":"Ochsenfeld, S., &#38; Schlichting, S. (2023). Hydrodynamic and Non-hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory. In <i>arXiv:2308.04491</i>.","short":"S. Ochsenfeld, S. Schlichting, ArXiv:2308.04491 (2023).","bibtex":"@article{Ochsenfeld_Schlichting_2023, title={Hydrodynamic and Non-hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory}, journal={arXiv:2308.04491}, author={Ochsenfeld, Stephan and Schlichting, Sören}, year={2023} }","mla":"Ochsenfeld, Stephan, and Sören Schlichting. “Hydrodynamic and Non-Hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory.” <i>ArXiv:2308.04491</i>, 2023.","ama":"Ochsenfeld S, Schlichting S. Hydrodynamic and Non-hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory. <i>arXiv:230804491</i>. Published online 2023.","chicago":"Ochsenfeld, Stephan, and Sören Schlichting. “Hydrodynamic and Non-Hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory.” <i>ArXiv:2308.04491</i>, 2023.","ieee":"S. Ochsenfeld and S. Schlichting, “Hydrodynamic and Non-hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory,” <i>arXiv:2308.04491</i>. 2023."},"date_updated":"2024-01-04T08:47:47Z","author":[{"full_name":"Ochsenfeld, Stephan","last_name":"Ochsenfeld","first_name":"Stephan"},{"first_name":"Sören","full_name":"Schlichting, Sören","last_name":"Schlichting"}],"date_created":"2024-01-04T08:47:38Z","title":"Hydrodynamic and Non-hydrodynamic Excitations in Kinetic Theory -- A  Numerical Analysis in Scalar Field Theory","publication":"arXiv:2308.04491","type":"preprint","abstract":[{"text":"Viscous hydrodynamics serves as a successful mesoscopic description of the\r\nQuark-Gluon Plasma produced in relativistic heavy-ion collisions. In order to\r\ninvestigate, how such an effective description emerges from the underlying\r\nmicroscopic dynamics we calculate the hydrodynamic and non-hydrodynamic modes\r\nof linear response in the sound channel from a first-principle calculation in\r\nkinetic theory. We do this with a new approach wherein we discretize the\r\ncollision kernel to directly calculate eigenvalues and eigenmodes of the\r\nevolution operator. This allows us to study the Green's functions at any point\r\nin the complex frequency space. Our study focuses on scalar theory with quartic\r\ninteraction and we find that the analytic structure of Green's functions in the\r\ncomplex plane is far more complicated than just poles or cuts which is a first\r\nstep towards an equivalent study in QCD kinetic theory.","lang":"eng"}],"status":"public","_id":"50172","external_id":{"arxiv":["2308.04491"]},"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"27"}],"user_id":"67287","language":[{"iso":"eng"}]},{"citation":{"mla":"Pleines, Marco, et al. “Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents.” <i>ArXiv:2309.17207</i>, 2023.","short":"M. Pleines, M. Pallasch, F. Zimmer, M. Preuss, ArXiv:2309.17207 (2023).","bibtex":"@article{Pleines_Pallasch_Zimmer_Preuss_2023, title={Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents}, journal={arXiv:2309.17207}, author={Pleines, Marco and Pallasch, Matthias and Zimmer, Frank and Preuss, Mike}, year={2023} }","apa":"Pleines, M., Pallasch, M., Zimmer, F., &#38; Preuss, M. (2023). Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents. In <i>arXiv:2309.17207</i>.","ama":"Pleines M, Pallasch M, Zimmer F, Preuss M. Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents. <i>arXiv:230917207</i>. Published online 2023.","chicago":"Pleines, Marco, Matthias Pallasch, Frank Zimmer, and Mike Preuss. “Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents.” <i>ArXiv:2309.17207</i>, 2023.","ieee":"M. Pleines, M. Pallasch, F. Zimmer, and M. Preuss, “Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents,” <i>arXiv:2309.17207</i>. 2023."},"year":"2023","author":[{"first_name":"Marco","full_name":"Pleines, Marco","last_name":"Pleines"},{"last_name":"Pallasch","full_name":"Pallasch, Matthias","first_name":"Matthias"},{"first_name":"Frank","last_name":"Zimmer","full_name":"Zimmer, Frank"},{"first_name":"Mike","full_name":"Preuss, Mike","last_name":"Preuss"}],"date_created":"2024-01-05T12:38:42Z","date_updated":"2024-01-05T12:39:50Z","title":"Memory Gym: Towards Endless Tasks to Benchmark Memory Capabilities of  Agents","publication":"arXiv:2309.17207","type":"preprint","status":"public","abstract":[{"text":"Memory Gym presents a suite of 2D partially observable environments, namely\r\nMortar Mayhem, Mystery Path, and Searing Spotlights, designed to benchmark\r\nmemory capabilities in decision-making agents. These environments, originally\r\nwith finite tasks, are expanded into innovative, endless formats, mirroring the\r\nescalating challenges of cumulative memory games such as ``I packed my bag''.\r\nThis progression in task design shifts the focus from merely assessing sample\r\nefficiency to also probing the levels of memory effectiveness in dynamic,\r\nprolonged scenarios. To address the gap in available memory-based Deep\r\nReinforcement Learning baselines, we introduce an implementation that\r\nintegrates Transformer-XL (TrXL) with Proximal Policy Optimization. This\r\napproach utilizes TrXL as a form of episodic memory, employing a sliding window\r\ntechnique. Our comparative study between the Gated Recurrent Unit (GRU) and\r\nTrXL reveals varied performances across different settings. TrXL, on the finite\r\nenvironments, demonstrates superior sample efficiency in Mystery Path and\r\noutperforms in Mortar Mayhem. However, GRU is more efficient on Searing\r\nSpotlights. Most notably, in all endless tasks, GRU makes a remarkable\r\nresurgence, consistently outperforming TrXL by significant margins. Website and\r\nSource Code: https://github.com/MarcoMeter/endless-memory-gym/","lang":"eng"}],"department":[{"_id":"27"}],"user_id":"67287","external_id":{"arxiv":["2309.17207"]},"_id":"50221","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"language":[{"iso":"eng"}]},{"publication":"arXiv:2302.01603","type":"preprint","abstract":[{"lang":"eng","text":"Many materials processes and properties depend on the anisotropy of the\r\nenergy of grain boundaries, i.e.~on the fact that this energy is a function of\r\nthe five geometric degrees of freedom (DOF) of the interface. To access this\r\nparameter space in an efficient way and to discover energy cusps in unexplored\r\nregions, a method was recently established, which combines atomistic\r\nsimulations with statistical methods 10.1002/adts.202100615. This sequential\r\nsampling technique is now extended in the spirit of an active learning\r\nalgorithm by adding a criterion to decide when the sampling has advanced enough\r\nto stop. In this instance, two parameters to analyse the sampling results on\r\nthe fly are introduced: the number of cusps, which correspond to the most\r\ninteresting and important regions of the energy landscape, and the maximum\r\nchange of energy between two sequential iterations. Monitoring these two\r\nquantities provides valuable insight into how the subspaces are energetically\r\nstructured. The combination of both parameters provides the necessary\r\ninformation to evaluate the sampling of the 2D subspaces of grain boundary\r\nplane inclinations of even non-periodic, low angle grain boundaries. With a\r\nreasonable number of data points in the initial design, only a few\r\nappropriately chosen sequential iterations already improve the accuracy of the\r\nsampling substantially and unknown cusps can be found within a few additional\r\nsequential steps."}],"status":"public","external_id":{"arxiv":["2302.01603"]},"_id":"50147","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"user_id":"67287","language":[{"iso":"eng"}],"year":"2023","citation":{"ama":"Schmalofski T, Kroll M, Dette H, Janisch R. Towards active learning: A stopping criterion for the sequential  sampling of grain boundary degrees of freedom. <i>arXiv:230201603</i>. Published online 2023.","ieee":"T. Schmalofski, M. Kroll, H. Dette, and R. Janisch, “Towards active learning: A stopping criterion for the sequential  sampling of grain boundary degrees of freedom,” <i>arXiv:2302.01603</i>. 2023.","chicago":"Schmalofski, Timo, Martin Kroll, Holger Dette, and Rebecca Janisch. “Towards Active Learning: A Stopping Criterion for the Sequential  Sampling of Grain Boundary Degrees of Freedom.” <i>ArXiv:2302.01603</i>, 2023.","short":"T. Schmalofski, M. Kroll, H. Dette, R. Janisch, ArXiv:2302.01603 (2023).","bibtex":"@article{Schmalofski_Kroll_Dette_Janisch_2023, title={Towards active learning: A stopping criterion for the sequential  sampling of grain boundary degrees of freedom}, journal={arXiv:2302.01603}, author={Schmalofski, Timo and Kroll, Martin and Dette, Holger and Janisch, Rebecca}, year={2023} }","mla":"Schmalofski, Timo, et al. “Towards Active Learning: A Stopping Criterion for the Sequential  Sampling of Grain Boundary Degrees of Freedom.” <i>ArXiv:2302.01603</i>, 2023.","apa":"Schmalofski, T., Kroll, M., Dette, H., &#38; Janisch, R. (2023). Towards active learning: A stopping criterion for the sequential  sampling of grain boundary degrees of freedom. In <i>arXiv:2302.01603</i>."},"date_updated":"2024-01-05T12:57:31Z","author":[{"last_name":"Schmalofski","full_name":"Schmalofski, Timo","first_name":"Timo"},{"first_name":"Martin","full_name":"Kroll, Martin","last_name":"Kroll"},{"first_name":"Holger","last_name":"Dette","full_name":"Dette, Holger"},{"full_name":"Janisch, Rebecca","last_name":"Janisch","first_name":"Rebecca"}],"date_created":"2024-01-04T08:17:01Z","title":"Towards active learning: A stopping criterion for the sequential  sampling of grain boundary degrees of freedom"}]