[{"department":[{"_id":"15"}],"user_id":"59416","_id":"47529","external_id":{"arxiv":["2305.04855"]},"status":"public","abstract":[{"lang":"eng","text":"Exceptional points (EPs) with their intriguing spectral topology have\nattracted considerable attention in a broad range of physical systems, with\npotential sensing applications driving much of the present research in this\nfield. Here we theoretically demonstrate the realization of EPs in a system\nwith significant nonlinearity, a non-equilibrium exciton-polariton condensate.\nWith the possibility to control loss and gain and nonlinearity by optical\nmeans, this system allows for a comprehensive analysis of the interplay of\nnonlinearities (Kerr-type and saturable gain) and non-Hermiticity. Not only do\nwe find that EPs can be intentionally shifted in parameter space by the\nsaturable gain, we also observe intriguing rotations and intersections of\nRiemann surfaces, and find nonlinearity-enhanced sensing capabilities. Our\nresults are quite general in nature and illustrate the potential of tailoring\nspectral topology and related phenomena in non-Hermitian systems by\nnonlinearity."}],"publication":"arXiv:2305.04855","type":"preprint","title":"Tweaking Spectral Topology and Exceptional Points by Nonlinearity in\n  Non-Hermitian Polariton Systems","author":[{"first_name":"Jan","last_name":"Wingenbach","full_name":"Wingenbach, Jan"},{"last_name":"Schumacher","full_name":"Schumacher, Stefan","first_name":"Stefan"},{"last_name":"Ma","full_name":"Ma, Xuekai","first_name":"Xuekai"}],"date_created":"2023-09-29T09:18:52Z","date_updated":"2023-09-29T11:28:01Z","citation":{"apa":"Wingenbach, J., Schumacher, S., &#38; Ma, X. (2023). Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems. In <i>arXiv:2305.04855</i>.","bibtex":"@article{Wingenbach_Schumacher_Ma_2023, title={Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems}, journal={arXiv:2305.04855}, author={Wingenbach, Jan and Schumacher, Stefan and Ma, Xuekai}, year={2023} }","mla":"Wingenbach, Jan, et al. “Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems.” <i>ArXiv:2305.04855</i>, 2023.","short":"J. Wingenbach, S. Schumacher, X. Ma, ArXiv:2305.04855 (2023).","ama":"Wingenbach J, Schumacher S, Ma X. Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems. <i>arXiv:230504855</i>. Published online 2023.","ieee":"J. Wingenbach, S. Schumacher, and X. Ma, “Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems,” <i>arXiv:2305.04855</i>. 2023.","chicago":"Wingenbach, Jan, Stefan Schumacher, and Xuekai Ma. “Tweaking Spectral Topology and Exceptional Points by Nonlinearity in   Non-Hermitian Polariton Systems.” <i>ArXiv:2305.04855</i>, 2023."},"year":"2023"},{"user_id":"9605","department":[{"_id":"299"}],"_id":"45577","language":[{"iso":"ger"}],"type":"conference","publication":"Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022","status":"public","editor":[{"first_name":"Helena","full_name":"van Vorst, Helena","last_name":"van Vorst"}],"date_created":"2023-06-12T09:56:43Z","author":[{"first_name":"Yvonne","last_name":"Webersen","full_name":"Webersen, Yvonne","id":"9605"}],"date_updated":"2024-09-19T08:25:04Z","title":"Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden","citation":{"apa":"Webersen, Y. (2023). Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden. In H. van Vorst (Ed.), <i>Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022</i> (pp. 750–753).","bibtex":"@inproceedings{Webersen_2023, title={Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden}, booktitle={Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022}, author={Webersen, Yvonne}, editor={van Vorst, Helena}, year={2023}, pages={750–753} }","short":"Y. Webersen, in: H. van Vorst (Ed.), Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022, 2023, pp. 750–753.","mla":"Webersen, Yvonne. “Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden.” <i>Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022</i>, edited by Helena van Vorst, 2023, pp. 750–53.","ama":"Webersen Y. Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden. In: van Vorst H, ed. <i>Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022</i>. ; 2023:750-753.","ieee":"Y. Webersen, “Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden,” in <i>Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022</i>, 2023, pp. 750–753.","chicago":"Webersen, Yvonne. “Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden.” In <i>Lernen, Lehren und Forschen in  einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022</i>, edited by Helena van Vorst, 750–53, 2023."},"page":"750-753","year":"2023"},{"edition":"1","year":"2023","date_created":"2023-10-04T06:22:23Z","publisher":"Elsevier","title":"Symmetry governed nonlinear selection rules in nanophotonics ","publication":"Fundamentals and Applications of Nonlinear Nanophotonics","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["978-0-323-90614-2"]},"publication_status":"published","citation":{"ama":"Zentgraf T, Sain B, Zhang S. Symmetry governed nonlinear selection rules in nanophotonics . In: Panoiu NC, ed. <i>Fundamentals and Applications of Nonlinear Nanophotonics</i>. 1st ed. Nanophotonics Series. Elsevier; 2023. doi:<a href=\"https://doi.org/10.1016/B978-0-323-90614-2.00011-0\">10.1016/B978-0-323-90614-2.00011-0</a>","ieee":"T. Zentgraf, B. Sain, and S. Zhang, “Symmetry governed nonlinear selection rules in nanophotonics ,” in <i>Fundamentals and Applications of Nonlinear Nanophotonics</i>, 1st ed., N. C. Panoiu, Ed. Amsterdam: Elsevier, 2023.","chicago":"Zentgraf, Thomas, Basudeb Sain, and Shuang Zhang. “Symmetry Governed Nonlinear Selection Rules in Nanophotonics .” In <i>Fundamentals and Applications of Nonlinear Nanophotonics</i>, edited by Nicoae C. Panoiu, 1st ed. Nanophotonics Series. Amsterdam: Elsevier, 2023. <a href=\"https://doi.org/10.1016/B978-0-323-90614-2.00011-0\">https://doi.org/10.1016/B978-0-323-90614-2.00011-0</a>.","apa":"Zentgraf, T., Sain, B., &#38; Zhang, S. (2023). Symmetry governed nonlinear selection rules in nanophotonics . In N. C. Panoiu (Ed.), <i>Fundamentals and Applications of Nonlinear Nanophotonics</i> (1st ed.). Elsevier. <a href=\"https://doi.org/10.1016/B978-0-323-90614-2.00011-0\">https://doi.org/10.1016/B978-0-323-90614-2.00011-0</a>","short":"T. Zentgraf, B. Sain, S. Zhang, in: N.C. Panoiu (Ed.), Fundamentals and Applications of Nonlinear Nanophotonics, 1st ed., Elsevier, Amsterdam, 2023.","mla":"Zentgraf, Thomas, et al. “Symmetry Governed Nonlinear Selection Rules in Nanophotonics .” <i>Fundamentals and Applications of Nonlinear Nanophotonics</i>, edited by Nicoae C. Panoiu, 1st ed., Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/B978-0-323-90614-2.00011-0\">10.1016/B978-0-323-90614-2.00011-0</a>.","bibtex":"@inbook{Zentgraf_Sain_Zhang_2023, place={Amsterdam}, edition={1}, series={Nanophotonics Series}, title={Symmetry governed nonlinear selection rules in nanophotonics }, DOI={<a href=\"https://doi.org/10.1016/B978-0-323-90614-2.00011-0\">10.1016/B978-0-323-90614-2.00011-0</a>}, booktitle={Fundamentals and Applications of Nonlinear Nanophotonics}, publisher={Elsevier}, author={Zentgraf, Thomas and Sain, Basudeb and Zhang, Shuang}, editor={Panoiu, Nicoae C.}, year={2023}, collection={Nanophotonics Series} }"},"place":"Amsterdam","author":[{"last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas"},{"first_name":"Basudeb","last_name":"Sain","full_name":"Sain, Basudeb"},{"first_name":"Shuang","last_name":"Zhang","full_name":"Zhang, Shuang"}],"date_updated":"2025-05-21T08:44:11Z","doi":"10.1016/B978-0-323-90614-2.00011-0","main_file_link":[{"url":"https://www.sciencedirect.com/science/article/pii/B9780323906142000110"}],"type":"book_chapter","status":"public","editor":[{"first_name":"Nicoae C.","last_name":"Panoiu","full_name":"Panoiu, Nicoae C."}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"series_title":"Nanophotonics Series","user_id":"30525","_id":"47543","project":[{"name":"TRR 142 - B: TRR 142 - Project Area B","_id":"55"},{"grant_number":"231447078","_id":"170","name":"TRR 142 - B09: TRR 142 - Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen (B09*)"},{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","grant_number":"231447078"}]},{"page":"1193-1203","intvolume":"        50","citation":{"apa":"Geromel, R., Rennerich, R., Zentgraf, T., &#38; Kitzerow, H.-S. (2023). Geometric-phase metalens to be used for tunable optical tweezers in microfluidics. <i>Liquid Crystals</i>, <i>50</i>(7–10), 1193–1203. <a href=\"https://doi.org/10.1080/02678292.2023.2171146\">https://doi.org/10.1080/02678292.2023.2171146</a>","bibtex":"@article{Geromel_Rennerich_Zentgraf_Kitzerow_2023, title={Geometric-phase metalens to be used for tunable optical tweezers in microfluidics}, volume={50}, DOI={<a href=\"https://doi.org/10.1080/02678292.2023.2171146\">10.1080/02678292.2023.2171146</a>}, number={7–10}, journal={Liquid Crystals}, publisher={Taylor &#38; Francis}, author={Geromel, René and Rennerich, Roman and Zentgraf, Thomas and Kitzerow, Heinz-Siegfried}, year={2023}, pages={1193–1203} }","mla":"Geromel, René, et al. “Geometric-Phase Metalens to Be Used for Tunable Optical Tweezers in Microfluidics.” <i>Liquid Crystals</i>, vol. 50, no. 7–10, Taylor &#38; Francis, 2023, pp. 1193–203, doi:<a href=\"https://doi.org/10.1080/02678292.2023.2171146\">10.1080/02678292.2023.2171146</a>.","short":"R. Geromel, R. Rennerich, T. Zentgraf, H.-S. Kitzerow, Liquid Crystals 50 (2023) 1193–1203.","ieee":"R. Geromel, R. Rennerich, T. Zentgraf, and H.-S. Kitzerow, “Geometric-phase metalens to be used for tunable optical tweezers in microfluidics,” <i>Liquid Crystals</i>, vol. 50, no. 7–10, pp. 1193–1203, 2023, doi: <a href=\"https://doi.org/10.1080/02678292.2023.2171146\">10.1080/02678292.2023.2171146</a>.","chicago":"Geromel, René, Roman Rennerich, Thomas Zentgraf, and Heinz-Siegfried Kitzerow. “Geometric-Phase Metalens to Be Used for Tunable Optical Tweezers in Microfluidics.” <i>Liquid Crystals</i> 50, no. 7–10 (2023): 1193–1203. <a href=\"https://doi.org/10.1080/02678292.2023.2171146\">https://doi.org/10.1080/02678292.2023.2171146</a>.","ama":"Geromel R, Rennerich R, Zentgraf T, Kitzerow H-S. Geometric-phase metalens to be used for tunable optical tweezers in microfluidics. <i>Liquid Crystals</i>. 2023;50(7-10):1193-1203. doi:<a href=\"https://doi.org/10.1080/02678292.2023.2171146\">10.1080/02678292.2023.2171146</a>"},"year":"2023","issue":"7-10","quality_controlled":"1","doi":"10.1080/02678292.2023.2171146","title":"Geometric-phase metalens to be used for tunable optical tweezers in microfluidics","volume":50,"date_created":"2023-01-27T12:42:16Z","author":[{"first_name":"René","full_name":"Geromel, René","last_name":"Geromel"},{"first_name":"Roman","last_name":"Rennerich","full_name":"Rennerich, Roman"},{"full_name":"Zentgraf, Thomas","id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas"},{"last_name":"Kitzerow","id":"254","full_name":"Kitzerow, Heinz-Siegfried","first_name":"Heinz-Siegfried"}],"publisher":"Taylor & Francis","date_updated":"2025-05-23T05:52:46Z","status":"public","abstract":[{"lang":"eng","text":"Geometric-phase dielectric meta-lenses made of silicon with high numerical aperture and short focal lengths are fabricated and characterised. For circularly polarised light, the same meta-lens can act as a converging or diverging lens, depending on the handedness of the circular polarisation. This effect enables application for optical tweezers that trap or release µm-size polymer beads floating in a microfluidic channel on demand. An electrically addressable polarisation converter based on liquid crystals may be used to switch between the two states of polarisation, at which the light transmitted through the meta-lens is focused (trapping) or defocussed (releasing), respectively."}],"publication":"Liquid Crystals","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"313"},{"_id":"230"},{"_id":"638"},{"_id":"15"},{"_id":"623"}],"user_id":"30525","_id":"40513","project":[{"grant_number":"231447078","name":"TRR 142: TRR 142","_id":"53"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"grant_number":"231447078","_id":"170","name":"TRR 142 - B09: TRR 142 - Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen (B09*)"}]},{"publication":"Physical Review Research","type":"journal_article","status":"public","_id":"55900","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"_id":"174","name":"TRR 142 - C10: TRR 142 -  Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse (C10*)"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"27"}],"user_id":"55907","article_number":"043158","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","issue":"4","year":"2023","intvolume":"         5","citation":{"ama":"Scharwald D, Meier T, Sharapova P. Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers. <i>Physical Review Research</i>. 2023;5(4). doi:<a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">10.1103/physrevresearch.5.043158</a>","ieee":"D. Scharwald, T. Meier, and P. Sharapova, “Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers,” <i>Physical Review Research</i>, vol. 5, no. 4, Art. no. 043158, 2023, doi: <a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">10.1103/physrevresearch.5.043158</a>.","chicago":"Scharwald, Dennis, Torsten Meier, and Polina Sharapova. “Phase Sensitivity of Spatially Broadband High-Gain SU(1,1) Interferometers.” <i>Physical Review Research</i> 5, no. 4 (2023). <a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">https://doi.org/10.1103/physrevresearch.5.043158</a>.","mla":"Scharwald, Dennis, et al. “Phase Sensitivity of Spatially Broadband High-Gain SU(1,1) Interferometers.” <i>Physical Review Research</i>, vol. 5, no. 4, 043158, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">10.1103/physrevresearch.5.043158</a>.","bibtex":"@article{Scharwald_Meier_Sharapova_2023, title={Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers}, volume={5}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">10.1103/physrevresearch.5.043158</a>}, number={4043158}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Scharwald, Dennis and Meier, Torsten and Sharapova, Polina}, year={2023} }","short":"D. Scharwald, T. Meier, P. Sharapova, Physical Review Research 5 (2023).","apa":"Scharwald, D., Meier, T., &#38; Sharapova, P. (2023). Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers. <i>Physical Review Research</i>, <i>5</i>(4), Article 043158. <a href=\"https://doi.org/10.1103/physrevresearch.5.043158\">https://doi.org/10.1103/physrevresearch.5.043158</a>"},"publisher":"American Physical Society (APS)","date_updated":"2026-02-01T13:21:22Z","oa":"1","volume":5,"author":[{"full_name":"Scharwald, Dennis","id":"55907","last_name":"Scharwald","orcid":"0009-0007-5654-5412","first_name":"Dennis"},{"orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344","first_name":"Torsten"},{"full_name":"Sharapova, Polina","last_name":"Sharapova","first_name":"Polina"}],"date_created":"2024-08-30T04:48:05Z","title":"Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers","doi":"10.1103/physrevresearch.5.043158","main_file_link":[{"open_access":"1","url":"https://journals.aps.org/prresearch/pdf/10.1103/PhysRevResearch.5.043158"}]},{"volume":398,"author":[{"last_name":"Schütte","full_name":"Schütte, Philipp","id":"50168","first_name":"Philipp"},{"last_name":"Weich","orcid":"0000-0002-9648-6919","full_name":"Weich, Tobias","id":"49178","first_name":"Tobias"},{"first_name":"Sonja","last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja"}],"date_created":"2022-05-04T12:27:46Z","date_updated":"2026-02-18T10:41:07Z","doi":"https://doi.org/10.1007/s00220-022-04538-z","title":"Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems","intvolume":"       398","page":"655-678","citation":{"apa":"Schütte, P., Weich, T., &#38; Barkhofen, S. (2023). Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems. <i>Communications in Mathematical Physics</i>, <i>398</i>, 655–678. <a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>","short":"P. Schütte, T. Weich, S. Barkhofen, Communications in Mathematical Physics 398 (2023) 655–678.","bibtex":"@article{Schütte_Weich_Barkhofen_2023, title={Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems}, volume={398}, DOI={<a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>}, journal={Communications in Mathematical Physics}, author={Schütte, Philipp and Weich, Tobias and Barkhofen, Sonja}, year={2023}, pages={655–678} }","mla":"Schütte, Philipp, et al. “Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems.” <i>Communications in Mathematical Physics</i>, vol. 398, 2023, pp. 655–78, doi:<a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>.","ieee":"P. Schütte, T. Weich, and S. Barkhofen, “Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems,” <i>Communications in Mathematical Physics</i>, vol. 398, pp. 655–678, 2023, doi: <a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>.","chicago":"Schütte, Philipp, Tobias Weich, and Sonja Barkhofen. “Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems.” <i>Communications in Mathematical Physics</i> 398 (2023): 655–78. <a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>.","ama":"Schütte P, Weich T, Barkhofen S. Meromorphic Continuation of Weighted Zeta Functions on Open Hyperbolic Systems. <i>Communications in Mathematical Physics</i>. 2023;398:655-678. doi:<a href=\"https://doi.org/10.1007/s00220-022-04538-z\">https://doi.org/10.1007/s00220-022-04538-z</a>"},"year":"2023","department":[{"_id":"10"},{"_id":"548"},{"_id":"623"},{"_id":"15"}],"user_id":"49178","external_id":{"arxiv":["2112.05791"]},"_id":"31059","language":[{"iso":"eng"}],"publication":"Communications in Mathematical Physics","type":"journal_article","status":"public","abstract":[{"text":"In this article we prove meromorphic continuation of weighted zeta functions in the framework of open hyperbolic systems by using the meromorphically continued restricted resolvent of Dyatlov and Guillarmou (2016). We obtain a residue formula proving equality between residues of weighted zetas and invariant Ruelle distributions. We combine this equality with results of Guillarmou, Hilgert and Weich (2021) in order to relate the residues to Patterson-Sullivan distributions. Finally we provide proof-of-principle results concerning the numerical calculation of invariant Ruelle distributions for 3-disc scattering systems.","lang":"eng"}]},{"type":"journal_article","publication":"AIP Advances","status":"public","abstract":[{"lang":"eng","text":"<jats:p>We present the fabrication of strain-free quantum dots in the In0.53Ga0.47As/In0.52Al0.48As-system lattice matched to InP, as future sources for single and entangled photons for long-haul fiber-based quantum communication in the optical C-band. We achieved these quantum dots by local droplet etching via InAl droplets in an In0.52Al0.48As layer and subsequent filling of the holes with In0.53Ga0.47As. Here, we present detailed investigations of the hole morphologies measured by atomic force microscopy. Statistical analysis of a set of nanoholes reveals a high degree of symmetry for nearly half of them when etched at optimized temperatures. Overgrowth with 50–150 nm In0.52Al0.48As increases their diameter and elongates the holes along the [01̄1]-direction. By systematically scanning the parameter space, we were able to fill the holes with In0.53Ga0.47As, and by capping the filled holes and performing photoluminescence measurements, we observe photoluminescence emission in the O-band up into the C-band depending on the filling height of the nanoholes.</jats:p>"}],"user_id":"42514","department":[{"_id":"15"},{"_id":"230"}],"_id":"57677","language":[{"iso":"eng"}],"issue":"5","publication_status":"published","publication_identifier":{"issn":["2158-3226"]},"citation":{"short":"D. Deutsch, C. Buchholz, V. Zolatanosha, K.D. Jöns, D. Reuter, AIP Advances 13 (2023).","bibtex":"@article{Deutsch_Buchholz_Zolatanosha_Jöns_Reuter_2023, title={Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers}, volume={13}, DOI={<a href=\"https://doi.org/10.1063/5.0147281\">10.1063/5.0147281</a>}, number={5}, journal={AIP Advances}, publisher={AIP Publishing}, author={Deutsch, Dennis and Buchholz, C. and Zolatanosha, V. and Jöns, K. D. and Reuter, Dirk}, year={2023} }","mla":"Deutsch, Dennis, et al. “Telecom C-Band Photon Emission from (In,Ga)As Quantum Dots Generated by Filling Nanoholes in In0.52Al0.48As Layers.” <i>AIP Advances</i>, vol. 13, no. 5, AIP Publishing, 2023, doi:<a href=\"https://doi.org/10.1063/5.0147281\">10.1063/5.0147281</a>.","apa":"Deutsch, D., Buchholz, C., Zolatanosha, V., Jöns, K. D., &#38; Reuter, D. (2023). Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers. <i>AIP Advances</i>, <i>13</i>(5). <a href=\"https://doi.org/10.1063/5.0147281\">https://doi.org/10.1063/5.0147281</a>","ama":"Deutsch D, Buchholz C, Zolatanosha V, Jöns KD, Reuter D. Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers. <i>AIP Advances</i>. 2023;13(5). doi:<a href=\"https://doi.org/10.1063/5.0147281\">10.1063/5.0147281</a>","ieee":"D. Deutsch, C. Buchholz, V. Zolatanosha, K. D. Jöns, and D. Reuter, “Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers,” <i>AIP Advances</i>, vol. 13, no. 5, 2023, doi: <a href=\"https://doi.org/10.1063/5.0147281\">10.1063/5.0147281</a>.","chicago":"Deutsch, Dennis, C. Buchholz, V. Zolatanosha, K. D. Jöns, and Dirk Reuter. “Telecom C-Band Photon Emission from (In,Ga)As Quantum Dots Generated by Filling Nanoholes in In0.52Al0.48As Layers.” <i>AIP Advances</i> 13, no. 5 (2023). <a href=\"https://doi.org/10.1063/5.0147281\">https://doi.org/10.1063/5.0147281</a>."},"intvolume":"        13","year":"2023","date_created":"2024-12-10T07:31:41Z","author":[{"first_name":"Dennis","last_name":"Deutsch","full_name":"Deutsch, Dennis","id":"23489"},{"full_name":"Buchholz, C.","last_name":"Buchholz","first_name":"C."},{"first_name":"V.","full_name":"Zolatanosha, V.","last_name":"Zolatanosha"},{"first_name":"K. D.","full_name":"Jöns, K. D.","last_name":"Jöns"},{"first_name":"Dirk","id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter"}],"volume":13,"publisher":"AIP Publishing","date_updated":"2024-12-10T07:32:35Z","doi":"10.1063/5.0147281","title":"Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers"},{"related_material":{"link":[{"relation":"confirmation","url":"https://gdcp-ev.de/wp-content/uploads/securepdfs/2023/05/F03_Kulgemeyer.pdf"}]},"year":"2023","citation":{"chicago":"Kulgemeyer, Christoph, Fabian Gabriel Sterzing, and Madeleine Hörnlein. “Von Der ‘Shallowing Hypothese’ Zur ‘Illusion of Understanding’ -Wie Wirken Erklärvideos Und Lehrbuchtexte Auf Wissen Und Verstehensillusion?” Edited by Helena Van Vorst. Lernen, Lehren Und Forschen in Einer Digital Geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","ieee":"C. Kulgemeyer, F. G. Sterzing, and M. Hörnlein, “Von der ‘Shallowing Hypothese’ zur ‘Illusion of Understanding’ -wie wirken Erklärvideos und Lehrbuchtexte auf Wissen und Verstehensillusion?” Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","ama":"Kulgemeyer C, Sterzing FG, Hörnlein M. Von der “Shallowing Hypothese” zur “Illusion of Understanding” -wie wirken Erklärvideos und Lehrbuchtexte auf Wissen und Verstehensillusion? Van Vorst H, ed. Published online 2023.","apa":"Kulgemeyer, C., Sterzing, F. G., &#38; Hörnlein, M. (2023). <i>Von der “Shallowing Hypothese” zur “Illusion of Understanding” -wie wirken Erklärvideos und Lehrbuchtexte auf Wissen und Verstehensillusion?</i> (H. Van Vorst, Ed.). Gesellschaft für Didaktik der Chemie und Physik (GDCP).","short":"C. Kulgemeyer, F.G. Sterzing, M. Hörnlein, (2023).","mla":"Kulgemeyer, Christoph, et al. <i>Von Der “Shallowing Hypothese” Zur “Illusion of Understanding” -Wie Wirken Erklärvideos Und Lehrbuchtexte Auf Wissen Und Verstehensillusion?</i> Edited by Helena Van Vorst, Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","bibtex":"@article{Kulgemeyer_Sterzing_Hörnlein_2023, series={Lernen, Lehren und Forschen in einer digital geprägten Welt}, title={Von der “Shallowing Hypothese” zur “Illusion of Understanding” -wie wirken Erklärvideos und Lehrbuchtexte auf Wissen und Verstehensillusion?}, publisher={Gesellschaft für Didaktik der Chemie und Physik (GDCP)}, author={Kulgemeyer, Christoph and Sterzing, Fabian Gabriel and Hörnlein, Madeleine}, editor={Van Vorst, Helena}, year={2023}, collection={Lernen, Lehren und Forschen in einer digital geprägten Welt} }"},"date_updated":"2024-12-12T14:28:58Z","publisher":"Gesellschaft für Didaktik der Chemie und Physik (GDCP)","date_created":"2023-05-31T09:12:40Z","author":[{"first_name":"Christoph","last_name":"Kulgemeyer","full_name":"Kulgemeyer, Christoph","id":"84533"},{"last_name":"Sterzing","id":"76974","full_name":"Sterzing, Fabian Gabriel","first_name":"Fabian Gabriel"},{"first_name":"Madeleine","last_name":"Hörnlein","orcid":"https://orcid.org/0000-0002-4220-930X","id":"51082","full_name":"Hörnlein, Madeleine"}],"title":"Von der \"Shallowing Hypothese\" zur \"Illusion of Understanding\" -wie wirken Erklärvideos und Lehrbuchtexte auf Wissen und Verstehensillusion?","conference":{"location":"Aachen","name":"GDCP-Jahrestagung 2022"},"type":"conference","editor":[{"last_name":"Van Vorst","full_name":"Van Vorst, Helena","first_name":"Helena"}],"status":"public","_id":"45398","department":[{"_id":"299"}],"user_id":"51082","series_title":"Lernen, Lehren und Forschen in einer digital geprägten Welt","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"_id":"45399","department":[{"_id":"299"}],"user_id":"51082","series_title":"Lernen, Lehren und Forschen in einer digital geprägten Welt","editor":[{"last_name":"Van Vorst","full_name":"Van Vorst, Helena","first_name":"Helena"}],"status":"public","type":"conference","title":"\"Aus Erklärvideos lernt man nur oberflächlich\" - oder erwirbt man auch Konzeptwissen?","conference":{"name":"GDCP-Jahrestagung 2022","location":"Aachen"},"date_updated":"2024-12-12T14:29:11Z","publisher":"Gesellschaft für Didaktik der Chemie und Physik (GDCP)","date_created":"2023-05-31T09:14:26Z","author":[{"orcid":"https://orcid.org/0000-0002-4220-930X","last_name":"Hörnlein","id":"51082","full_name":"Hörnlein, Madeleine","first_name":"Madeleine"},{"first_name":"Christoph","last_name":"Kulgemeyer","id":"84533","full_name":"Kulgemeyer, Christoph"}],"year":"2023","citation":{"chicago":"Hörnlein, Madeleine, and Christoph Kulgemeyer. “‘Aus Erklärvideos Lernt Man Nur Oberflächlich’ - Oder Erwirbt Man Auch Konzeptwissen?” Edited by Helena Van Vorst. Lernen, Lehren Und Forschen in Einer Digital Geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","ieee":"M. Hörnlein and C. Kulgemeyer, “‘Aus Erklärvideos lernt man nur oberflächlich’ - oder erwirbt man auch Konzeptwissen?” Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","ama":"Hörnlein M, Kulgemeyer C. “Aus Erklärvideos lernt man nur oberflächlich” - oder erwirbt man auch Konzeptwissen? Van Vorst H, ed. Published online 2023.","mla":"Hörnlein, Madeleine, and Christoph Kulgemeyer. <i>“Aus Erklärvideos Lernt Man Nur Oberflächlich” - Oder Erwirbt Man Auch Konzeptwissen?</i> Edited by Helena Van Vorst, Gesellschaft für Didaktik der Chemie und Physik (GDCP), 2023.","bibtex":"@article{Hörnlein_Kulgemeyer_2023, series={Lernen, Lehren und Forschen in einer digital geprägten Welt}, title={“Aus Erklärvideos lernt man nur oberflächlich” - oder erwirbt man auch Konzeptwissen?}, publisher={Gesellschaft für Didaktik der Chemie und Physik (GDCP)}, author={Hörnlein, Madeleine and Kulgemeyer, Christoph}, editor={Van Vorst, Helena}, year={2023}, collection={Lernen, Lehren und Forschen in einer digital geprägten Welt} }","short":"M. Hörnlein, C. Kulgemeyer, (2023).","apa":"Hörnlein, M., &#38; Kulgemeyer, C. (2023). <i>“Aus Erklärvideos lernt man nur oberflächlich” - oder erwirbt man auch Konzeptwissen?</i> (H. Van Vorst, Ed.). Gesellschaft für Didaktik der Chemie und Physik (GDCP)."},"related_material":{"link":[{"url":"https://gdcp-ev.de/wp-content/uploads/securepdfs/2023/05/P084_Hoernlein.pdf","relation":"confirmation"}]}},{"_id":"45277","department":[{"_id":"299"}],"user_id":"51082","language":[{"iso":"ger"}],"publication":"Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven","type":"book_chapter","editor":[{"last_name":"Wilhelm","full_name":"Wilhelm, Thomas","first_name":"Thomas"}],"status":"public","publisher":"Klett Kallmeyer","date_updated":"2024-12-12T14:28:38Z","author":[{"full_name":"Kulgemeyer, Christoph","id":"84533","last_name":"Kulgemeyer","first_name":"Christoph"},{"last_name":"Sterzing","full_name":"Sterzing, Fabian Gabriel","id":"76974","first_name":"Fabian Gabriel"},{"first_name":"Madeleine","last_name":"Hörnlein","orcid":"https://orcid.org/0000-0002-4220-930X","full_name":"Hörnlein, Madeleine","id":"51082"}],"date_created":"2023-05-25T12:39:23Z","title":"Aus Erklärvideos lernen","publication_identifier":{"unknown":["ISBN 978-3-7727-1700-0 ","ISBN 978-3-7727-1701-7 "]},"year":"2023","place":"Hannover","page":"230-244","citation":{"ieee":"C. Kulgemeyer, F. G. Sterzing, and M. Hörnlein, “Aus Erklärvideos lernen,” in <i>Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven</i>, T. Wilhelm, Ed. Hannover: Klett Kallmeyer, 2023, pp. 230–244.","chicago":"Kulgemeyer, Christoph, Fabian Gabriel Sterzing, and Madeleine Hörnlein. “Aus Erklärvideos lernen.” In <i>Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven</i>, edited by Thomas Wilhelm, 230–44. Hannover: Klett Kallmeyer, 2023.","ama":"Kulgemeyer C, Sterzing FG, Hörnlein M. Aus Erklärvideos lernen. In: Wilhelm T, ed. <i>Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven</i>. Klett Kallmeyer; 2023:230-244.","apa":"Kulgemeyer, C., Sterzing, F. G., &#38; Hörnlein, M. (2023). Aus Erklärvideos lernen. In T. Wilhelm (Ed.), <i>Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven</i> (pp. 230–244). Klett Kallmeyer.","mla":"Kulgemeyer, Christoph, et al. “Aus Erklärvideos lernen.” <i>Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven</i>, edited by Thomas Wilhelm, Klett Kallmeyer, 2023, pp. 230–44.","bibtex":"@inbook{Kulgemeyer_Sterzing_Hörnlein_2023, place={Hannover}, title={Aus Erklärvideos lernen}, booktitle={Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven}, publisher={Klett Kallmeyer}, author={Kulgemeyer, Christoph and Sterzing, Fabian Gabriel and Hörnlein, Madeleine}, editor={Wilhelm, Thomas}, year={2023}, pages={230–244} }","short":"C. Kulgemeyer, F.G. Sterzing, M. Hörnlein, in: T. Wilhelm (Ed.), Digital Physik unterrichten. Grundlagen, Impulse, Perspektiven, Klett Kallmeyer, Hannover, 2023, pp. 230–244."}},{"status":"public","publication":"Lehr-Lern-Labore und Digitalisierung","type":"book_chapter","language":[{"iso":"eng"}],"_id":"60483","department":[{"_id":"864"}],"user_id":"118219","year":"2023","page":"47–62","citation":{"ama":"Weiler DC, Burde J-P, Große-Heilmann RI, Lachner A, Riese J, Schubatzky T. Förderung von digitalisierungsbezogenen Kompetenzen von angehenden Physiklehrkräften mit dem SQD-Modell im Projekt DiKoLeP. In: <i>Lehr-Lern-Labore Und Digitalisierung</i>. Springer Fachmedien Wiesbaden; 2023:47–62. doi:<a href=\"https://doi.org/10.1007/978-3-658-40109-2_4\">10.1007/978-3-658-40109-2_4</a>","chicago":"Weiler, David Christoph, Jan-Philipp Burde, Rike Isabel Große-Heilmann, Andreas Lachner, Josef Riese, and Thomas Schubatzky. “Förderung von Digitalisierungsbezogenen Kompetenzen von Angehenden Physiklehrkräften Mit Dem SQD-Modell Im Projekt DiKoLeP.” In <i>Lehr-Lern-Labore Und Digitalisierung</i>, 47–62. Springer Fachmedien Wiesbaden, 2023. <a href=\"https://doi.org/10.1007/978-3-658-40109-2_4\">https://doi.org/10.1007/978-3-658-40109-2_4</a>.","ieee":"D. C. Weiler, J.-P. Burde, R. I. Große-Heilmann, A. Lachner, J. Riese, and T. Schubatzky, “Förderung von digitalisierungsbezogenen Kompetenzen von angehenden Physiklehrkräften mit dem SQD-Modell im Projekt DiKoLeP,” in <i>Lehr-Lern-Labore und Digitalisierung</i>, Springer Fachmedien Wiesbaden, 2023, pp. 47–62.","apa":"Weiler, D. C., Burde, J.-P., Große-Heilmann, R. I., Lachner, A., Riese, J., &#38; Schubatzky, T. (2023). Förderung von digitalisierungsbezogenen Kompetenzen von angehenden Physiklehrkräften mit dem SQD-Modell im Projekt DiKoLeP. In <i>Lehr-Lern-Labore und Digitalisierung</i> (pp. 47–62). Springer Fachmedien Wiesbaden. <a href=\"https://doi.org/10.1007/978-3-658-40109-2_4\">https://doi.org/10.1007/978-3-658-40109-2_4</a>","bibtex":"@inbook{Weiler_Burde_Große-Heilmann_Lachner_Riese_Schubatzky_2023, title={Förderung von digitalisierungsbezogenen Kompetenzen von angehenden Physiklehrkräften mit dem SQD-Modell im Projekt DiKoLeP}, DOI={<a href=\"https://doi.org/10.1007/978-3-658-40109-2_4\">10.1007/978-3-658-40109-2_4</a>}, booktitle={Lehr-Lern-Labore und Digitalisierung}, publisher={Springer Fachmedien Wiesbaden}, author={Weiler, David Christoph and Burde, Jan-Philipp and Große-Heilmann, Rike Isabel and Lachner, Andreas and Riese, Josef and Schubatzky, Thomas}, year={2023}, pages={47–62} }","mla":"Weiler, David Christoph, et al. “Förderung von Digitalisierungsbezogenen Kompetenzen von Angehenden Physiklehrkräften Mit Dem SQD-Modell Im Projekt DiKoLeP.” <i>Lehr-Lern-Labore Und Digitalisierung</i>, Springer Fachmedien Wiesbaden, 2023, pp. 47–62, doi:<a href=\"https://doi.org/10.1007/978-3-658-40109-2_4\">10.1007/978-3-658-40109-2_4</a>.","short":"D.C. Weiler, J.-P. Burde, R.I. Große-Heilmann, A. Lachner, J. Riese, T. Schubatzky, in: Lehr-Lern-Labore Und Digitalisierung, Springer Fachmedien Wiesbaden, 2023, pp. 47–62."},"title":"Förderung von digitalisierungsbezogenen Kompetenzen von angehenden Physiklehrkräften mit dem SQD-Modell im Projekt DiKoLeP","doi":"10.1007/978-3-658-40109-2_4","publisher":"Springer Fachmedien Wiesbaden","date_updated":"2025-07-03T12:38:43Z","author":[{"first_name":"David Christoph","id":"118219","full_name":"Weiler, David Christoph","last_name":"Weiler","orcid":"0000-0003-2164-0341"},{"first_name":"Jan-Philipp","full_name":"Burde, Jan-Philipp","last_name":"Burde"},{"first_name":"Rike Isabel","orcid":"0000-0001-8713-3014","last_name":"Große-Heilmann","full_name":"Große-Heilmann, Rike Isabel","id":"99511"},{"first_name":"Andreas","last_name":"Lachner","full_name":"Lachner, Andreas"},{"first_name":"Josef","orcid":"0000-0003-2927-2619","last_name":"Riese","full_name":"Riese, Josef","id":"429"},{"full_name":"Schubatzky, Thomas","last_name":"Schubatzky","first_name":"Thomas"}],"date_created":"2025-07-01T17:12:51Z"},{"title":"On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs","date_created":"2025-09-12T11:11:56Z","publisher":"Wiley","year":"2023","issue":"1","language":[{"iso":"eng"}],"abstract":[{"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>","lang":"eng"}],"publication":"Advanced Quantum Technologies","doi":"10.1002/qute.202300142","volume":7,"author":[{"first_name":"David","full_name":"Bauch, David","last_name":"Bauch"},{"last_name":"Siebert","full_name":"Siebert, Dustin","first_name":"Dustin"},{"id":"85353","full_name":"Jöns, Klaus D.","last_name":"Jöns","first_name":"Klaus D."},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens","first_name":"Jens"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"date_updated":"2025-09-12T11:16:12Z","intvolume":"         7","citation":{"ama":"Bauch D, Siebert D, Jöns KD, Förstner J, Schumacher S. On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. <i>Advanced Quantum Technologies</i>. 2023;7(1). doi:<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>","ieee":"D. Bauch, D. Siebert, K. D. Jöns, J. Förstner, and S. Schumacher, “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” <i>Advanced Quantum Technologies</i>, vol. 7, no. 1, Art. no. 2300142, 2023, doi: <a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>.","chicago":"Bauch, David, Dustin Siebert, Klaus D. Jöns, Jens Förstner, and Stefan Schumacher. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” <i>Advanced Quantum Technologies</i> 7, no. 1 (2023). <a href=\"https://doi.org/10.1002/qute.202300142\">https://doi.org/10.1002/qute.202300142</a>.","apa":"Bauch, D., Siebert, D., Jöns, K. D., Förstner, J., &#38; Schumacher, S. (2023). On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs. <i>Advanced Quantum Technologies</i>, <i>7</i>(1), Article 2300142. <a href=\"https://doi.org/10.1002/qute.202300142\">https://doi.org/10.1002/qute.202300142</a>","mla":"Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.” <i>Advanced Quantum Technologies</i>, vol. 7, no. 1, 2300142, Wiley, 2023, doi:<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>.","short":"D. Bauch, D. Siebert, K.D. Jöns, J. Förstner, S. Schumacher, Advanced Quantum Technologies 7 (2023).","bibtex":"@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, volume={7}, DOI={<a href=\"https://doi.org/10.1002/qute.202300142\">10.1002/qute.202300142</a>}, number={12300142}, journal={Advanced Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus D. and Förstner, Jens and Schumacher, Stefan}, year={2023} }"},"publication_identifier":{"issn":["2511-9044","2511-9044"]},"publication_status":"published","article_number":"2300142","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"642"},{"_id":"61"},{"_id":"230"},{"_id":"35"},{"_id":"34"},{"_id":"429"},{"_id":"27"},{"_id":"623"}],"user_id":"16199","_id":"61252","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"55","name":"TRR 142 - Project Area B"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"167","name":"TRR 142; TP B06: Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems"},{"name":"TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen","_id":"173"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"status":"public","type":"journal_article"},{"publication":"Optical Materials Express","type":"journal_article","abstract":[{"text":"<jats:p>This review examines the use of continuous-variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. Special emphasis is placed on multichannel homodyne detection as a powerful tool to measure the quantum coherence and the full density matrix of a polariton system. Observations, such as coherence times that exceed the nanosecond scale obtained by monitoring the temporal decay of quantum coherence in a polariton condensate, are discussed. Proof-of-concept experiments and numerical simulations that demonstrate the enhanced resourcefulness of the produced system states for modern quantum protocols are assessed. The combination of tailored resource quantifiers and ultrafast spectroscopy techniques that have recently been demonstrated paves the way for future applications of quantum information technologies.</jats:p>","lang":"eng"}],"status":"public","_id":"61266","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"623"}],"user_id":"16199","article_number":"2997","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2159-3930"]},"publication_status":"published","issue":"11","year":"2023","intvolume":"        13","citation":{"bibtex":"@article{Lüders_Barkhausen_Pukrop_Rozas_Sperling_Schumacher_Aßmann_2023, title={Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>}, number={112997}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Lüders, Carolin and Barkhausen, Franziska and Pukrop, Matthias and Rozas, Elena and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2023} }","short":"C. Lüders, F. Barkhausen, M. Pukrop, E. Rozas, J. Sperling, S. Schumacher, M. Aßmann, Optical Materials Express 13 (2023).","mla":"Lüders, Carolin, et al. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i>, vol. 13, no. 11, 2997, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","apa":"Lüders, C., Barkhausen, F., Pukrop, M., Rozas, E., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2023). Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>, <i>13</i>(11), Article 2997. <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>","ama":"Lüders C, Barkhausen F, Pukrop M, et al. Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>. 2023;13(11). doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>","ieee":"C. Lüders <i>et al.</i>, “Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited],” <i>Optical Materials Express</i>, vol. 13, no. 11, Art. no. 2997, 2023, doi: <a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","chicago":"Lüders, Carolin, Franziska Barkhausen, Matthias Pukrop, Elena Rozas, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i> 13, no. 11 (2023). <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>."},"publisher":"Optica Publishing Group","date_updated":"2025-09-12T11:41:42Z","volume":13,"author":[{"last_name":"Lüders","full_name":"Lüders, Carolin","first_name":"Carolin"},{"first_name":"Franziska","full_name":"Barkhausen, Franziska","id":"63631","last_name":"Barkhausen"},{"first_name":"Matthias","full_name":"Pukrop, Matthias","last_name":"Pukrop"},{"first_name":"Elena","full_name":"Rozas, Elena","last_name":"Rozas"},{"first_name":"Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling","id":"75127","full_name":"Sperling, Jan"},{"first_name":"Stefan","id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951"},{"last_name":"Aßmann","full_name":"Aßmann, Marc","first_name":"Marc"}],"date_created":"2025-09-12T11:40:26Z","title":"Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]","doi":"10.1364/ome.497006"},{"type":"journal_article","publication":"ACS Nano","status":"public","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"61264","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["1936-0851","1936-086X"]},"issue":"5","year":"2023","citation":{"short":"Y. Yu, C.-D. Dong, R. Binder, S. Schumacher, C.-Z. 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Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe<sub>2</sub>. <i>ACS Nano</i>, <i>17</i>(5), 4230–4238. <a href=\"https://doi.org/10.1021/acsnano.2c01665\">https://doi.org/10.1021/acsnano.2c01665</a>","ieee":"Y. Yu, C.-D. Dong, R. Binder, S. Schumacher, and C.-Z. Ning, “Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe<sub>2</sub>,” <i>ACS Nano</i>, vol. 17, no. 5, pp. 4230–4238, 2023, doi: <a href=\"https://doi.org/10.1021/acsnano.2c01665\">10.1021/acsnano.2c01665</a>.","chicago":"Yu, Yueyang, Chuan-Ding Dong, Rolf Binder, Stefan Schumacher, and Cun-Zheng Ning. “Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe<sub>2</sub>.” <i>ACS Nano</i> 17, no. 5 (2023): 4230–38. <a href=\"https://doi.org/10.1021/acsnano.2c01665\">https://doi.org/10.1021/acsnano.2c01665</a>.","ama":"Yu Y, Dong C-D, Binder R, Schumacher S, Ning C-Z. Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe<sub>2</sub>. <i>ACS Nano</i>. 2023;17(5):4230-4238. doi:<a href=\"https://doi.org/10.1021/acsnano.2c01665\">10.1021/acsnano.2c01665</a>"},"intvolume":"        17","page":"4230-4238","date_updated":"2025-09-12T11:37:52Z","publisher":"American Chemical Society (ACS)","date_created":"2025-09-12T11:36:52Z","author":[{"full_name":"Yu, Yueyang","last_name":"Yu","first_name":"Yueyang"},{"last_name":"Dong","full_name":"Dong, Chuan-Ding","first_name":"Chuan-Ding"},{"full_name":"Binder, Rolf","last_name":"Binder","first_name":"Rolf"},{"orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"},{"full_name":"Ning, Cun-Zheng","last_name":"Ning","first_name":"Cun-Zheng"}],"volume":17,"title":"Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe<sub>2</sub>","doi":"10.1021/acsnano.2c01665"},{"author":[{"full_name":"Gao, Ying","last_name":"Gao","first_name":"Ying"},{"last_name":"Ma","full_name":"Ma, Xuekai","id":"59416","first_name":"Xuekai"},{"last_name":"Zhai","full_name":"Zhai, Xiaokun","first_name":"Xiaokun"},{"last_name":"Xing","full_name":"Xing, Chunzi","first_name":"Chunzi"},{"first_name":"Meini","last_name":"Gao","full_name":"Gao, Meini"},{"full_name":"Dai, Haitao","last_name":"Dai","first_name":"Haitao"},{"first_name":"Hao","full_name":"Wu, Hao","last_name":"Wu"},{"first_name":"Tong","last_name":"Liu","full_name":"Liu, Tong"},{"full_name":"Ren, Yuan","last_name":"Ren","first_name":"Yuan"},{"first_name":"Xiao","last_name":"Wang","full_name":"Wang, Xiao"},{"last_name":"Pan","full_name":"Pan, Anlian","first_name":"Anlian"},{"first_name":"Wei","full_name":"Hu, Wei","last_name":"Hu"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan"},{"first_name":"Tingge","full_name":"Gao, Tingge","last_name":"Gao"}],"date_created":"2025-09-12T11:45:20Z","volume":108,"publisher":"American Physical Society (APS)","date_updated":"2025-09-12T11:46:10Z","doi":"10.1103/physrevb.108.205303","title":"Single-shot spatial instability and electric control of polariton condensates at room temperature","issue":"20","publication_status":"published","publication_identifier":{"issn":["2469-9950","2469-9969"]},"citation":{"apa":"Gao, Y., Ma, X., Zhai, X., Xing, C., Gao, M., Dai, H., Wu, H., Liu, T., Ren, Y., Wang, X., Pan, A., Hu, W., Schumacher, S., &#38; Gao, T. (2023). Single-shot spatial instability and electric control of polariton condensates at room temperature. <i>Physical Review B</i>, <i>108</i>(20), Article 205303. <a href=\"https://doi.org/10.1103/physrevb.108.205303\">https://doi.org/10.1103/physrevb.108.205303</a>","mla":"Gao, Ying, et al. “Single-Shot Spatial Instability and Electric Control of Polariton Condensates at Room Temperature.” <i>Physical Review B</i>, vol. 108, no. 20, 205303, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevb.108.205303\">10.1103/physrevb.108.205303</a>.","short":"Y. Gao, X. Ma, X. Zhai, C. Xing, M. Gao, H. Dai, H. Wu, T. Liu, Y. Ren, X. Wang, A. Pan, W. Hu, S. Schumacher, T. Gao, Physical Review B 108 (2023).","bibtex":"@article{Gao_Ma_Zhai_Xing_Gao_Dai_Wu_Liu_Ren_Wang_et al._2023, title={Single-shot spatial instability and electric control of polariton condensates at room temperature}, volume={108}, DOI={<a href=\"https://doi.org/10.1103/physrevb.108.205303\">10.1103/physrevb.108.205303</a>}, number={20205303}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Gao, Ying and Ma, Xuekai and Zhai, Xiaokun and Xing, Chunzi and Gao, Meini and Dai, Haitao and Wu, Hao and Liu, Tong and Ren, Yuan and Wang, Xiao and et al.}, year={2023} }","ama":"Gao Y, Ma X, Zhai X, et al. Single-shot spatial instability and electric control of polariton condensates at room temperature. <i>Physical Review B</i>. 2023;108(20). doi:<a href=\"https://doi.org/10.1103/physrevb.108.205303\">10.1103/physrevb.108.205303</a>","ieee":"Y. Gao <i>et al.</i>, “Single-shot spatial instability and electric control of polariton condensates at room temperature,” <i>Physical Review B</i>, vol. 108, no. 20, Art. no. 205303, 2023, doi: <a href=\"https://doi.org/10.1103/physrevb.108.205303\">10.1103/physrevb.108.205303</a>.","chicago":"Gao, Ying, Xuekai Ma, Xiaokun Zhai, Chunzi Xing, Meini Gao, Haitao Dai, Hao Wu, et al. “Single-Shot Spatial Instability and Electric Control of Polariton Condensates at Room Temperature.” <i>Physical Review B</i> 108, no. 20 (2023). <a href=\"https://doi.org/10.1103/physrevb.108.205303\">https://doi.org/10.1103/physrevb.108.205303</a>."},"intvolume":"       108","year":"2023","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"230"}],"_id":"61269","language":[{"iso":"eng"}],"article_number":"205303","type":"journal_article","publication":"Physical Review B","status":"public"},{"publication_identifier":{"issn":["2050-7526","2050-7534"]},"publication_status":"published","intvolume":"        11","page":"12992-12998","citation":{"ama":"Bauch F, Dong C-D, Schumacher S. Dynamics-induced charge transfer in semiconducting conjugated polymers. <i>Journal of Materials Chemistry C</i>. 2023;11(38):12992-12998. doi:<a href=\"https://doi.org/10.1039/d3tc02263c\">10.1039/d3tc02263c</a>","chicago":"Bauch, Fabian, Chuan-Ding Dong, and Stefan Schumacher. “Dynamics-Induced Charge Transfer in Semiconducting Conjugated Polymers.” <i>Journal of Materials Chemistry C</i> 11, no. 38 (2023): 12992–98. <a href=\"https://doi.org/10.1039/d3tc02263c\">https://doi.org/10.1039/d3tc02263c</a>.","ieee":"F. Bauch, C.-D. Dong, and S. Schumacher, “Dynamics-induced charge transfer in semiconducting conjugated polymers,” <i>Journal of Materials Chemistry C</i>, vol. 11, no. 38, pp. 12992–12998, 2023, doi: <a href=\"https://doi.org/10.1039/d3tc02263c\">10.1039/d3tc02263c</a>.","apa":"Bauch, F., Dong, C.-D., &#38; Schumacher, S. (2023). Dynamics-induced charge transfer in semiconducting conjugated polymers. <i>Journal of Materials Chemistry C</i>, <i>11</i>(38), 12992–12998. <a href=\"https://doi.org/10.1039/d3tc02263c\">https://doi.org/10.1039/d3tc02263c</a>","mla":"Bauch, Fabian, et al. “Dynamics-Induced Charge Transfer in Semiconducting Conjugated Polymers.” <i>Journal of Materials Chemistry C</i>, vol. 11, no. 38, Royal Society of Chemistry (RSC), 2023, pp. 12992–98, doi:<a href=\"https://doi.org/10.1039/d3tc02263c\">10.1039/d3tc02263c</a>.","bibtex":"@article{Bauch_Dong_Schumacher_2023, title={Dynamics-induced charge transfer in semiconducting conjugated polymers}, volume={11}, DOI={<a href=\"https://doi.org/10.1039/d3tc02263c\">10.1039/d3tc02263c</a>}, number={38}, journal={Journal of Materials Chemistry C}, publisher={Royal Society of Chemistry (RSC)}, author={Bauch, Fabian and Dong, Chuan-Ding and Schumacher, Stefan}, year={2023}, pages={12992–12998} }","short":"F. Bauch, C.-D. Dong, S. Schumacher, Journal of Materials Chemistry C 11 (2023) 12992–12998."},"volume":11,"author":[{"first_name":"Fabian","last_name":"Bauch","full_name":"Bauch, Fabian"},{"first_name":"Chuan-Ding","full_name":"Dong, Chuan-Ding","last_name":"Dong"},{"orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"date_updated":"2025-09-12T11:43:49Z","doi":"10.1039/d3tc02263c","type":"journal_article","status":"public","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","_id":"61267","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"issue":"38","year":"2023","date_created":"2025-09-12T11:43:03Z","publisher":"Royal Society of Chemistry (RSC)","title":"Dynamics-induced charge transfer in semiconducting conjugated polymers","publication":"Journal of Materials Chemistry C","abstract":[{"lang":"eng","text":"<jats:p>Dynamics-induced interchain charge transfer in a polymer aggregate in stack configuration can be understood by single-oligomer polaron energy.</jats:p>"}],"language":[{"iso":"eng"}]},{"date_updated":"2025-09-18T12:08:56Z","publisher":"Optica Publishing Group","author":[{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"full_name":"Quiring, Viktor","last_name":"Quiring","first_name":"Viktor"},{"orcid":"0000-0002-2134-3075","last_name":"Bocchini","full_name":"Bocchini, Adriana","id":"58349","first_name":"Adriana"},{"first_name":"Matteo","full_name":"Santandrea, Matteo","id":"55095","last_name":"Santandrea","orcid":"0000-0001-5718-358X"},{"id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","first_name":"Uwe"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2025-09-18T12:06:19Z","title":"Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance","doi":"10.1364/cleo_at.2023.jw2a.57","publication_status":"published","year":"2023","citation":{"ieee":"C. Eigner <i>et al.</i>, “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance,” 2023, doi: <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>.","chicago":"Eigner, Christof, Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, and Christine Silberhorn. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” In <i>CLEO 2023</i>. Optica Publishing Group, 2023. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>.","ama":"Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. In: <i>CLEO 2023</i>. Optica Publishing Group; 2023. doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>","bibtex":"@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023, title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance}, DOI={<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>}, booktitle={CLEO 2023}, publisher={Optica Publishing Group}, author={Eigner, Christof and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}, year={2023} }","mla":"Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” <i>CLEO 2023</i>, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>.","short":"C. Eigner, L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, in: CLEO 2023, Optica Publishing Group, 2023.","apa":"Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt, W. G., &#38; Silberhorn, C. (2023). Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. <i>CLEO 2023</i>. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>"},"_id":"61362","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"55","name":"TRR 142 - Project Area B"},{"name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","_id":"168"},{"name":"TRR 142 - Subproject A11","_id":"166"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"27"}],"user_id":"16199","language":[{"iso":"eng"}],"publication":"CLEO 2023","type":"conference","abstract":[{"lang":"eng","text":"<jats:p>We study the interaction of gray tracking and DC ionic conductivity in Potassium Titanyl Phosphate (KTiOPO<jats:sub>4</jats:sub>, KTP) and present a novel way to reduce conductivity via a potassium nitrate treatment improving the device quality.</jats:p>"}],"status":"public"},{"date_created":"2025-09-18T11:55:30Z","author":[{"last_name":"Hajduk","full_name":"Hajduk, Andreas","first_name":"Andreas"},{"first_name":"Mohammad Amin","full_name":"Zare Pour, Mohammad Amin","last_name":"Zare Pour"},{"full_name":"Paszuk, Agnieszka","last_name":"Paszuk","first_name":"Agnieszka"},{"last_name":"Guidat","full_name":"Guidat, Margot","first_name":"Margot"},{"first_name":"Mario","last_name":"Löw","full_name":"Löw, Mario"},{"full_name":"Ullmann, Fabian","last_name":"Ullmann","first_name":"Fabian"},{"last_name":"Moritz","full_name":"Moritz, Dominik C.","first_name":"Dominik C."},{"full_name":"Hofmann, Jan P.","last_name":"Hofmann","first_name":"Jan P."},{"first_name":"Stefan","last_name":"Krischok","full_name":"Krischok, Stefan"},{"last_name":"Runge","full_name":"Runge, Erich","first_name":"Erich"},{"id":"468","full_name":"Schmidt, Wolf Gero","last_name":"Schmidt","orcid":"0000-0002-2717-5076","first_name":"Wolf Gero"},{"last_name":"Jaegermann","full_name":"Jaegermann, Wolfram","first_name":"Wolfram"},{"full_name":"May, Matthias M.","last_name":"May","first_name":"Matthias M."},{"last_name":"Hannappel","full_name":"Hannappel, Thomas","first_name":"Thomas"}],"publisher":"Elsevier","date_updated":"2025-09-18T12:00:59Z","doi":"10.1016/b978-0-323-85669-0.00113-6","title":"(Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure","publication_status":"published","publication_identifier":{"isbn":["9780323856706"]},"citation":{"apa":"Hajduk, A., Zare Pour, M. A., Paszuk, A., Guidat, M., Löw, M., Ullmann, F., Moritz, D. C., Hofmann, J. P., Krischok, S., Runge, E., Schmidt, W. G., Jaegermann, W., May, M. M., &#38; Hannappel, T. (2023). (Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure. In <i>Encyclopedia of Solid-Liquid Interfaces</i>. Elsevier. <a href=\"https://doi.org/10.1016/b978-0-323-85669-0.00113-6\">https://doi.org/10.1016/b978-0-323-85669-0.00113-6</a>","mla":"Hajduk, Andreas, et al. “(Photo-)Electrochemical Reactions on Semiconductor Surfaces, Part B: III-V Surfaces–Atomic and Electronic Structure.” <i>Encyclopedia of Solid-Liquid Interfaces</i>, Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/b978-0-323-85669-0.00113-6\">10.1016/b978-0-323-85669-0.00113-6</a>.","short":"A. Hajduk, M.A. Zare Pour, A. Paszuk, M. Guidat, M. Löw, F. Ullmann, D.C. Moritz, J.P. Hofmann, S. Krischok, E. Runge, W.G. Schmidt, W. Jaegermann, M.M. May, T. Hannappel, in: Encyclopedia of Solid-Liquid Interfaces, Elsevier, 2023.","bibtex":"@inbook{Hajduk_Zare Pour_Paszuk_Guidat_Löw_Ullmann_Moritz_Hofmann_Krischok_Runge_et al._2023, title={(Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure}, DOI={<a href=\"https://doi.org/10.1016/b978-0-323-85669-0.00113-6\">10.1016/b978-0-323-85669-0.00113-6</a>}, booktitle={Encyclopedia of Solid-Liquid Interfaces}, publisher={Elsevier}, author={Hajduk, Andreas and Zare Pour, Mohammad Amin and Paszuk, Agnieszka and Guidat, Margot and Löw, Mario and Ullmann, Fabian and Moritz, Dominik C. and Hofmann, Jan P. and Krischok, Stefan and Runge, Erich and et al.}, year={2023} }","ieee":"A. Hajduk <i>et al.</i>, “(Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure,” in <i>Encyclopedia of Solid-Liquid Interfaces</i>, Elsevier, 2023.","chicago":"Hajduk, Andreas, Mohammad Amin Zare Pour, Agnieszka Paszuk, Margot Guidat, Mario Löw, Fabian Ullmann, Dominik C. Moritz, et al. “(Photo-)Electrochemical Reactions on Semiconductor Surfaces, Part B: III-V Surfaces–Atomic and Electronic Structure.” In <i>Encyclopedia of Solid-Liquid Interfaces</i>. Elsevier, 2023. <a href=\"https://doi.org/10.1016/b978-0-323-85669-0.00113-6\">https://doi.org/10.1016/b978-0-323-85669-0.00113-6</a>.","ama":"Hajduk A, Zare Pour MA, Paszuk A, et al. (Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure. In: <i>Encyclopedia of Solid-Liquid Interfaces</i>. Elsevier; 2023. doi:<a href=\"https://doi.org/10.1016/b978-0-323-85669-0.00113-6\">10.1016/b978-0-323-85669-0.00113-6</a>"},"year":"2023","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"230"},{"_id":"35"},{"_id":"27"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"61360","language":[{"iso":"eng"}],"type":"book_chapter","publication":"Encyclopedia of Solid-Liquid Interfaces","status":"public"},{"abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>Based on a literature review of studies on teachers’ professional competence and related assessment tools, this paper introduces a model of teacher education assessment. It is influenced by Miller’s (1990) framework of assessment in medical education and includes, among other aspects, performance assessments. This model is used to understand the potential effects of transferring assessment tools into a digital format with assessment feedback. Five examples for such a transfer will be discussed: three methods for various aspects of communication, a test for pedagogical content knowledge, and a test for content knowledge. All five are established instruments well-described in terms of validity. All five have recently been transferred into a digital format. The analysis of this transfer also reveals a potentially harmful effect of digital assessment. The closer an assessment instrument is to assessing action-related parts of professional competence, the more authenticity is required; however, digitisation tends to decrease this authenticity. This suggests that an increasing number of digital assessment tools in teacher education might result in an even more dominant focus on knowledge tests, ignoring other parts of professional competence. This article highlights the role of authenticity in validity and discusses the most suitable assessment format to address various parts of professional competence. It ends by highlighting the lessons learned from the transfer of assessment instruments into a digital format that other academic disciplines might find interesting.</jats:p>","lang":"eng"}],"status":"public","publication":"Zeitschrift für Erziehungswissenschaft","type":"journal_article","keyword":["Education"],"language":[{"iso":"eng"}],"_id":"45562","department":[{"_id":"299"},{"_id":"33"}],"user_id":"4245","year":"2023","citation":{"ieee":"C. Kulgemeyer <i>et al.</i>, “How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz,” <i>Zeitschrift für Erziehungswissenschaft</i>, 2023, doi: <a href=\"https://doi.org/10.1007/s11618-023-01154-y\">10.1007/s11618-023-01154-y</a>.","chicago":"Kulgemeyer, Christoph, Josef Riese, Christoph Vogelsang, David Buschhüter, Andreas Borowski, Anna Weißbach, Melanie Jordans, Peter Reinhold, and Horst Schecker. “How Authenticity Impacts Validity: Developing a Model of Teacher Education Assessment and Exploring the Effects of the Digitisation of Assessment Methods Über Validität Und Authentizität: Effekte Des Transfers von Testinstrumenten in Ein Digitales Format Auf Die Erhobenen Aspekte Der Professionellen Handlungskompetenz.” <i>Zeitschrift Für Erziehungswissenschaft</i>, 2023. <a href=\"https://doi.org/10.1007/s11618-023-01154-y\">https://doi.org/10.1007/s11618-023-01154-y</a>.","ama":"Kulgemeyer C, Riese J, Vogelsang C, et al. How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz. <i>Zeitschrift für Erziehungswissenschaft</i>. Published online 2023. doi:<a href=\"https://doi.org/10.1007/s11618-023-01154-y\">10.1007/s11618-023-01154-y</a>","apa":"Kulgemeyer, C., Riese, J., Vogelsang, C., Buschhüter, D., Borowski, A., Weißbach, A., Jordans, M., Reinhold, P., &#38; Schecker, H. (2023). How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz. <i>Zeitschrift Für Erziehungswissenschaft</i>. <a href=\"https://doi.org/10.1007/s11618-023-01154-y\">https://doi.org/10.1007/s11618-023-01154-y</a>","short":"C. Kulgemeyer, J. Riese, C. Vogelsang, D. Buschhüter, A. Borowski, A. Weißbach, M. Jordans, P. Reinhold, H. Schecker, Zeitschrift Für Erziehungswissenschaft (2023).","bibtex":"@article{Kulgemeyer_Riese_Vogelsang_Buschhüter_Borowski_Weißbach_Jordans_Reinhold_Schecker_2023, title={How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz}, DOI={<a href=\"https://doi.org/10.1007/s11618-023-01154-y\">10.1007/s11618-023-01154-y</a>}, journal={Zeitschrift für Erziehungswissenschaft}, publisher={Springer Science and Business Media LLC}, author={Kulgemeyer, Christoph and Riese, Josef and Vogelsang, Christoph and Buschhüter, David and Borowski, Andreas and Weißbach, Anna and Jordans, Melanie and Reinhold, Peter and Schecker, Horst}, year={2023} }","mla":"Kulgemeyer, Christoph, et al. “How Authenticity Impacts Validity: Developing a Model of Teacher Education Assessment and Exploring the Effects of the Digitisation of Assessment Methods Über Validität Und Authentizität: Effekte Des Transfers von Testinstrumenten in Ein Digitales Format Auf Die Erhobenen Aspekte Der Professionellen Handlungskompetenz.” <i>Zeitschrift Für Erziehungswissenschaft</i>, Springer Science and Business Media LLC, 2023, doi:<a href=\"https://doi.org/10.1007/s11618-023-01154-y\">10.1007/s11618-023-01154-y</a>."},"publication_identifier":{"issn":["1434-663X","1862-5215"]},"quality_controlled":"1","publication_status":"published","title":"How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz","doi":"10.1007/s11618-023-01154-y","date_updated":"2025-12-03T09:01:17Z","publisher":"Springer Science and Business Media LLC","date_created":"2023-06-10T12:23:06Z","author":[{"first_name":"Christoph","full_name":"Kulgemeyer, Christoph","id":"84533","last_name":"Kulgemeyer"},{"full_name":"Riese, Josef","id":"429","orcid":"0000-0003-2927-2619","last_name":"Riese","first_name":"Josef"},{"id":"4245","full_name":"Vogelsang, Christoph","last_name":"Vogelsang","orcid":"0000-0002-5804-1855","first_name":"Christoph"},{"full_name":"Buschhüter, David","last_name":"Buschhüter","first_name":"David"},{"last_name":"Borowski","full_name":"Borowski, Andreas","first_name":"Andreas"},{"last_name":"Weißbach","full_name":"Weißbach, Anna","first_name":"Anna"},{"first_name":"Melanie","id":"99324","full_name":"Jordans, Melanie","last_name":"Jordans"},{"first_name":"Peter","full_name":"Reinhold, Peter","id":"416","last_name":"Reinhold"},{"full_name":"Schecker, Horst","last_name":"Schecker","first_name":"Horst"}]},{"year":"2023","citation":{"chicago":"Barkhofen, Sonja, Benjamin Brecht, and Christine Silberhorn. “Verschränkung wie am Fließband.” <i>Physik in unserer Zeit</i> 54, no. 1 (2023): 10–11. <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>.","ieee":"S. Barkhofen, B. Brecht, and C. Silberhorn, “Verschränkung wie am Fließband,” <i>Physik in unserer Zeit</i>, vol. 54, no. 1, pp. 10–11, 2023, doi: <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>.","ama":"Barkhofen S, Brecht B, Silberhorn C. Verschränkung wie am Fließband. <i>Physik in unserer Zeit</i>. 2023;54(1):10-11. doi:<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>","apa":"Barkhofen, S., Brecht, B., &#38; Silberhorn, C. (2023). Verschränkung wie am Fließband. <i>Physik in unserer Zeit</i>, <i>54</i>(1), 10–11. <a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>","short":"S. Barkhofen, B. Brecht, C. Silberhorn, Physik in unserer Zeit 54 (2023) 10–11.","bibtex":"@article{Barkhofen_Brecht_Silberhorn_2023, title={Verschränkung wie am Fließband}, volume={54}, DOI={<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>}, number={1}, journal={Physik in unserer Zeit}, publisher={Wiley}, author={Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2023}, pages={10–11} }","mla":"Barkhofen, Sonja, et al. “Verschränkung wie am Fließband.” <i>Physik in unserer Zeit</i>, vol. 54, no. 1, Wiley, 2023, pp. 10–11, doi:<a href=\"https://doi.org/10.1002/piuz.202370107\">https://doi.org/10.1002/piuz.202370107</a>."},"intvolume":"        54","page":"10-11","publication_status":"published","issue":"1","title":"Verschränkung wie am Fließband","doi":"https://doi.org/10.1002/piuz.202370107","publisher":"Wiley","date_updated":"2025-12-04T13:36:42Z","author":[{"last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja","first_name":"Sonja"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"date_created":"2023-01-24T08:04:47Z","volume":54,"status":"public","type":"journal_article","publication":"Physik in unserer Zeit","language":[{"iso":"ger"}],"_id":"38541","user_id":"48188","department":[{"_id":"623"},{"_id":"15"}]}]