[{"issue":"1","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"apa":"Hummel, T., Widhalm, A., Höpker, J. P., Jöns, K., Chang, J., Fognini, A., Steinhauer, S., Zwiller, V., Zrenner, A., & Bartley, T. (2023). Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry. Optics Express, 31(1), Article 610. https://doi.org/10.1364/oe.472058","mla":"Hummel, Thomas, et al. “Nanosecond Gating of Superconducting Nanowire Single-Photon Detectors Using Cryogenic Bias Circuitry.” Optics Express, vol. 31, no. 1, 610, Optica Publishing Group, 2023, doi:10.1364/oe.472058.","bibtex":"@article{Hummel_Widhalm_Höpker_Jöns_Chang_Fognini_Steinhauer_Zwiller_Zrenner_Bartley_2023, title={Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry}, volume={31}, DOI={10.1364/oe.472058}, number={1610}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Hummel, Thomas and Widhalm, Alex and Höpker, Jan Philipp and Jöns, Klaus and Chang, Jin and Fognini, Andreas and Steinhauer, Stephan and Zwiller, Val and Zrenner, Artur and Bartley, Tim}, year={2023} }","short":"T. Hummel, A. Widhalm, J.P. Höpker, K. Jöns, J. Chang, A. Fognini, S. Steinhauer, V. Zwiller, A. Zrenner, T. Bartley, Optics Express 31 (2023).","ama":"Hummel T, Widhalm A, Höpker JP, et al. Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry. Optics Express. 2023;31(1). doi:10.1364/oe.472058","ieee":"T. Hummel et al., “Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry,” Optics Express, vol. 31, no. 1, Art. no. 610, 2023, doi: 10.1364/oe.472058.","chicago":"Hummel, Thomas, Alex Widhalm, Jan Philipp Höpker, Klaus Jöns, Jin Chang, Andreas Fognini, Stephan Steinhauer, Val Zwiller, Artur Zrenner, and Tim Bartley. “Nanosecond Gating of Superconducting Nanowire Single-Photon Detectors Using Cryogenic Bias Circuitry.” Optics Express 31, no. 1 (2023). https://doi.org/10.1364/oe.472058."},"intvolume":" 31","year":"2023","date_created":"2023-01-12T14:46:40Z","author":[{"full_name":"Hummel, Thomas","id":"83846","orcid":"0000-0001-8627-2119","last_name":"Hummel","first_name":"Thomas"},{"last_name":"Widhalm","full_name":"Widhalm, Alex","first_name":"Alex"},{"last_name":"Höpker","id":"33913","full_name":"Höpker, Jan Philipp","first_name":"Jan Philipp"},{"first_name":"Klaus","id":"85353","full_name":"Jöns, Klaus","last_name":"Jöns"},{"last_name":"Chang","full_name":"Chang, Jin","first_name":"Jin"},{"full_name":"Fognini, Andreas","last_name":"Fognini","first_name":"Andreas"},{"first_name":"Stephan","last_name":"Steinhauer","full_name":"Steinhauer, Stephan"},{"first_name":"Val","full_name":"Zwiller, Val","last_name":"Zwiller"},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606"},{"first_name":"Tim","full_name":"Bartley, Tim","id":"49683","last_name":"Bartley"}],"volume":31,"date_updated":"2025-12-11T13:05:14Z","publisher":"Optica Publishing Group","doi":"10.1364/oe.472058","title":"Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry","type":"journal_article","publication":"Optics Express","status":"public","abstract":[{"lang":"eng","text":"Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active de-latching for higher dynamic range counting or temporal filtering for pump-probe spectroscopy or LiDAR. To that end, we demonstrate active gating of an SNSPD with a minimum off-to-on rise time of 2.4 ns and a total gate length of 5.0 ns. We show how the rise time depends on the inductance of the detector in combination with the control electronics. The gate window is demonstrated to be fully and freely, electrically tunable up to 500 ns at a repetition rate of 1.0 MHz, as well as ungated, free-running operation. Control electronics to generate the gating are mounted on the 2.3 K stage of a closed-cycle sorption cryostat, while the detector is operated on the cold stage at 0.8 K. We show that the efficiency and timing jitter of the detector is not altered during the on-time of the gating window. We exploit gated operation to demonstrate a method to increase in the photon counting dynamic range by a factor 11.2, as well as temporal filtering of a strong pump in an emulated pump-probe experiment."}],"user_id":"48188","department":[{"_id":"15"},{"_id":"623"},{"_id":"230"},{"_id":"429"},{"_id":"642"}],"_id":"36471","language":[{"iso":"eng"}],"article_number":"610","keyword":["Atomic and Molecular Physics","and Optics"]},{"title":"Electric-field-induced second harmonic generation in silicon dioxide","doi":"10.1364/oe.443489","date_updated":"2022-02-07T14:20:13Z","publisher":"The Optical Society","volume":30,"author":[{"first_name":"Alex","last_name":"Widhalm","full_name":"Widhalm, Alex"},{"first_name":"Christian","last_name":"Golla","full_name":"Golla, Christian"},{"full_name":"Weber, Nils","last_name":"Weber","first_name":"Nils"},{"last_name":"Mackwitz","full_name":"Mackwitz, Peter","first_name":"Peter"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944"},{"first_name":"Cedrik","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572","full_name":"Meier, Cedrik","id":"20798"}],"date_created":"2022-02-01T15:36:34Z","year":"2022","intvolume":" 30","citation":{"ieee":"A. Widhalm, C. Golla, N. Weber, P. Mackwitz, A. Zrenner, and C. Meier, “Electric-field-induced second harmonic generation in silicon dioxide,” Optics Express, vol. 30, no. 4, Art. no. 4867, 2022, doi: 10.1364/oe.443489.","chicago":"Widhalm, Alex, Christian Golla, Nils Weber, Peter Mackwitz, Artur Zrenner, and Cedrik Meier. “Electric-Field-Induced Second Harmonic Generation in Silicon Dioxide.” Optics Express 30, no. 4 (2022). https://doi.org/10.1364/oe.443489.","ama":"Widhalm A, Golla C, Weber N, Mackwitz P, Zrenner A, Meier C. Electric-field-induced second harmonic generation in silicon dioxide. Optics Express. 2022;30(4). doi:10.1364/oe.443489","apa":"Widhalm, A., Golla, C., Weber, N., Mackwitz, P., Zrenner, A., & Meier, C. (2022). Electric-field-induced second harmonic generation in silicon dioxide. Optics Express, 30(4), Article 4867. https://doi.org/10.1364/oe.443489","short":"A. Widhalm, C. Golla, N. Weber, P. Mackwitz, A. Zrenner, C. Meier, Optics Express 30 (2022).","mla":"Widhalm, Alex, et al. “Electric-Field-Induced Second Harmonic Generation in Silicon Dioxide.” Optics Express, vol. 30, no. 4, 4867, The Optical Society, 2022, doi:10.1364/oe.443489.","bibtex":"@article{Widhalm_Golla_Weber_Mackwitz_Zrenner_Meier_2022, title={Electric-field-induced second harmonic generation in silicon dioxide}, volume={30}, DOI={10.1364/oe.443489}, number={44867}, journal={Optics Express}, publisher={The Optical Society}, author={Widhalm, Alex and Golla, Christian and Weber, Nils and Mackwitz, Peter and Zrenner, Artur and Meier, Cedrik}, year={2022} }"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"4","keyword":["Atomic and Molecular Physics","and Optics"],"article_number":"4867","language":[{"iso":"eng"}],"_id":"29716","project":[{"_id":"53","name":"TRR 142: TRR 142"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"name":"TRR 142 - C5: TRR 142 - Subproject C5","_id":"75"}],"department":[{"_id":"15"}],"user_id":"20798","status":"public","publication":"Optics Express","type":"journal_article"},{"abstract":[{"lang":"eng","text":"AbstractTailored nanoscale quantum light sources, matching the specific needs of use cases, are crucial building blocks for photonic quantum technologies. Several different approaches to realize solid-state quantum emitters with high performance have been pursued and different concepts for energy tuning have been established. However, the properties of the emitted photons are always defined by the individual quantum emitter and can therefore not be controlled with full flexibility. Here we introduce an all-optical nonlinear method to tailor and control the single photon emission. We demonstrate a laser-controlled down-conversion process from an excited state of a semiconductor quantum three-level system. Based on this concept, we realize energy tuning and polarization control of the single photon emission with a control-laser field. Our results mark an important step towards tailored single photon emission from a photonic quantum system based on quantum optical principles."}],"status":"public","publication":"Nature Communications","type":"journal_article","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry"],"article_number":"1387","language":[{"iso":"eng"}],"_id":"30385","department":[{"_id":"15"},{"_id":"230"}],"user_id":"606","year":"2022","intvolume":" 13","citation":{"apa":"Jonas, B., Heinze, D., Schöll, E., Kallert, P., Langer, T., Krehs, S., Widhalm, A., Jöns, K. D., Reuter, D., Schumacher, S., & Zrenner, A. (2022). Nonlinear down-conversion in a single quantum dot. Nature Communications, 13(1), Article 1387. https://doi.org/10.1038/s41467-022-28993-3","mla":"Jonas, B., et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” Nature Communications, vol. 13, no. 1, 1387, Springer Science and Business Media LLC, 2022, doi:10.1038/s41467-022-28993-3.","short":"B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K.D. Jöns, D. Reuter, S. Schumacher, A. Zrenner, Nature Communications 13 (2022).","bibtex":"@article{Jonas_Heinze_Schöll_Kallert_Langer_Krehs_Widhalm_Jöns_Reuter_Schumacher_et al._2022, title={Nonlinear down-conversion in a single quantum dot}, volume={13}, DOI={10.1038/s41467-022-28993-3}, number={11387}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Jonas, B. and Heinze, D. and Schöll, E. and Kallert, P. and Langer, T. and Krehs, S. and Widhalm, A. and Jöns, K. D. and Reuter, D. and Schumacher, S. and et al.}, year={2022} }","chicago":"Jonas, B., D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” Nature Communications 13, no. 1 (2022). https://doi.org/10.1038/s41467-022-28993-3.","ieee":"B. Jonas et al., “Nonlinear down-conversion in a single quantum dot,” Nature Communications, vol. 13, no. 1, Art. no. 1387, 2022, doi: 10.1038/s41467-022-28993-3.","ama":"Jonas B, Heinze D, Schöll E, et al. Nonlinear down-conversion in a single quantum dot. Nature Communications. 2022;13(1). doi:10.1038/s41467-022-28993-3"},"publication_identifier":{"issn":["2041-1723"]},"publication_status":"published","issue":"1","title":"Nonlinear down-conversion in a single quantum dot","doi":"10.1038/s41467-022-28993-3","date_updated":"2022-03-21T07:37:22Z","publisher":"Springer Science and Business Media LLC","volume":13,"author":[{"first_name":"B.","last_name":"Jonas","full_name":"Jonas, B."},{"last_name":"Heinze","full_name":"Heinze, D.","first_name":"D."},{"full_name":"Schöll, E.","last_name":"Schöll","first_name":"E."},{"first_name":"P.","full_name":"Kallert, P.","last_name":"Kallert"},{"first_name":"T.","last_name":"Langer","full_name":"Langer, T."},{"first_name":"S.","last_name":"Krehs","full_name":"Krehs, S."},{"last_name":"Widhalm","full_name":"Widhalm, A.","first_name":"A."},{"full_name":"Jöns, K. D.","last_name":"Jöns","first_name":"K. D."},{"first_name":"D.","full_name":"Reuter, D.","last_name":"Reuter"},{"first_name":"S.","last_name":"Schumacher","full_name":"Schumacher, S."},{"id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","first_name":"Artur"}],"date_created":"2022-03-21T07:34:33Z"},{"volume":105,"date_created":"2022-03-21T07:30:40Z","author":[{"first_name":"Tom","last_name":"Praschan","full_name":"Praschan, Tom"},{"full_name":"Heinze, Dirk","last_name":"Heinze","first_name":"Dirk"},{"last_name":"Breddermann","full_name":"Breddermann, Dominik","first_name":"Dominik"},{"orcid":"0000-0002-5190-0944","last_name":"Zrenner","id":"606","full_name":"Zrenner, Artur","first_name":"Artur"},{"first_name":"Andrea","full_name":"Walther, Andrea","last_name":"Walther"},{"first_name":"Stefan","last_name":"Schumacher","full_name":"Schumacher, Stefan"}],"date_updated":"2022-03-21T07:37:50Z","publisher":"American Physical Society (APS)","doi":"10.1103/physrevb.105.045302","title":"Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton","issue":"4","publication_identifier":{"issn":["2469-9950","2469-9969"]},"publication_status":"published","intvolume":" 105","citation":{"apa":"Praschan, T., Heinze, D., Breddermann, D., Zrenner, A., Walther, A., & Schumacher, S. (2022). Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton. Physical Review B, 105(4), Article 045302. https://doi.org/10.1103/physrevb.105.045302","bibtex":"@article{Praschan_Heinze_Breddermann_Zrenner_Walther_Schumacher_2022, title={Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton}, volume={105}, DOI={10.1103/physrevb.105.045302}, number={4045302}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Praschan, Tom and Heinze, Dirk and Breddermann, Dominik and Zrenner, Artur and Walther, Andrea and Schumacher, Stefan}, year={2022} }","mla":"Praschan, Tom, et al. “Pulse Shaping for On-Demand Emission of Single Raman Photons from a Quantum-Dot Biexciton.” Physical Review B, vol. 105, no. 4, 045302, American Physical Society (APS), 2022, doi:10.1103/physrevb.105.045302.","short":"T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, S. Schumacher, Physical Review B 105 (2022).","ieee":"T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, and S. Schumacher, “Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton,” Physical Review B, vol. 105, no. 4, Art. no. 045302, 2022, doi: 10.1103/physrevb.105.045302.","chicago":"Praschan, Tom, Dirk Heinze, Dominik Breddermann, Artur Zrenner, Andrea Walther, and Stefan Schumacher. “Pulse Shaping for On-Demand Emission of Single Raman Photons from a Quantum-Dot Biexciton.” Physical Review B 105, no. 4 (2022). https://doi.org/10.1103/physrevb.105.045302.","ama":"Praschan T, Heinze D, Breddermann D, Zrenner A, Walther A, Schumacher S. Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton. Physical Review B. 2022;105(4). doi:10.1103/physrevb.105.045302"},"year":"2022","department":[{"_id":"15"},{"_id":"230"}],"user_id":"606","_id":"30384","language":[{"iso":"eng"}],"article_number":"045302","publication":"Physical Review B","type":"journal_article","status":"public"},{"status":"public","type":"journal_article","article_number":"1387","project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A03: TRR 142 - Subproject A03","_id":"60"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"40523","user_id":"16199","department":[{"_id":"15"},{"_id":"297"},{"_id":"230"},{"_id":"429"},{"_id":"27"},{"_id":"623"},{"_id":"170"},{"_id":"35"}],"citation":{"ama":"Jonas B, Heinze DF, Schöll E, et al. Nonlinear down-conversion in a single quantum dot. Nature Communications. 2022;13(1). doi:10.1038/s41467-022-28993-3","ieee":"B. Jonas et al., “Nonlinear down-conversion in a single quantum dot,” Nature Communications, vol. 13, no. 1, Art. no. 1387, 2022, doi: 10.1038/s41467-022-28993-3.","chicago":"Jonas, B., Dirk Florian Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” Nature Communications 13, no. 1 (2022). https://doi.org/10.1038/s41467-022-28993-3.","short":"B. Jonas, D.F. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. Jöns, D. Reuter, S. Schumacher, A. Zrenner, Nature Communications 13 (2022).","bibtex":"@article{Jonas_Heinze_Schöll_Kallert_Langer_Krehs_Widhalm_Jöns_Reuter_Schumacher_et al._2022, title={Nonlinear down-conversion in a single quantum dot}, volume={13}, DOI={10.1038/s41467-022-28993-3}, number={11387}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Jonas, B. and Heinze, Dirk Florian and Schöll, E. and Kallert, P. and Langer, T. and Krehs, S. and Widhalm, A. and Jöns, Klaus and Reuter, Dirk and Schumacher, Stefan and et al.}, year={2022} }","mla":"Jonas, B., et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” Nature Communications, vol. 13, no. 1, 1387, Springer Science and Business Media LLC, 2022, doi:10.1038/s41467-022-28993-3.","apa":"Jonas, B., Heinze, D. F., Schöll, E., Kallert, P., Langer, T., Krehs, S., Widhalm, A., Jöns, K., Reuter, D., Schumacher, S., & Zrenner, A. (2022). Nonlinear down-conversion in a single quantum dot. Nature Communications, 13(1), Article 1387. https://doi.org/10.1038/s41467-022-28993-3"},"intvolume":" 13","publication_status":"published","publication_identifier":{"issn":["2041-1723"]},"doi":"10.1038/s41467-022-28993-3","date_updated":"2023-04-20T15:18:31Z","author":[{"last_name":"Jonas","full_name":"Jonas, B.","first_name":"B."},{"first_name":"Dirk Florian","last_name":"Heinze","full_name":"Heinze, Dirk Florian","id":"10904"},{"last_name":"Schöll","full_name":"Schöll, E.","first_name":"E."},{"last_name":"Kallert","full_name":"Kallert, P.","first_name":"P."},{"first_name":"T.","last_name":"Langer","full_name":"Langer, T."},{"full_name":"Krehs, S.","last_name":"Krehs","first_name":"S."},{"full_name":"Widhalm, A.","last_name":"Widhalm","first_name":"A."},{"first_name":"Klaus","last_name":"Jöns","full_name":"Jöns, Klaus","id":"85353"},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan"},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"}],"volume":13,"abstract":[{"lang":"eng","text":"AbstractTailored nanoscale quantum light sources, matching the specific needs of use cases, are crucial building blocks for photonic quantum technologies. Several different approaches to realize solid-state quantum emitters with high performance have been pursued and different concepts for energy tuning have been established. However, the properties of the emitted photons are always defined by the individual quantum emitter and can therefore not be controlled with full flexibility. Here we introduce an all-optical nonlinear method to tailor and control the single photon emission. We demonstrate a laser-controlled down-conversion process from an excited state of a semiconductor quantum three-level system. Based on this concept, we realize energy tuning and polarization control of the single photon emission with a control-laser field. Our results mark an important step towards tailored single photon emission from a photonic quantum system based on quantum optical principles."}],"publication":"Nature Communications","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"language":[{"iso":"eng"}],"year":"2022","issue":"1","title":"Nonlinear down-conversion in a single quantum dot","publisher":"Springer Science and Business Media LLC","date_created":"2023-01-27T13:41:42Z"},{"publication":"Physical Review B","language":[{"iso":"eng"}],"issue":"4","year":"2022","publisher":"American Physical Society (APS)","date_created":"2023-01-26T15:45:42Z","title":"Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton","type":"journal_article","status":"public","project":[{"name":"TRR 142: TRR 142","_id":"53"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"60","name":"TRR 142 - A3: TRR 142 - Subproject A3"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"40431","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"290"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"35"}],"article_number":"045302","publication_status":"published","publication_identifier":{"issn":["2469-9950","2469-9969"]},"citation":{"apa":"Praschan, T., Heinze, D., Breddermann, D., Zrenner, A., Walther, A., & Schumacher, S. (2022). Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton. Physical Review B, 105(4), Article 045302. https://doi.org/10.1103/physrevb.105.045302","mla":"Praschan, Tom, et al. “Pulse Shaping for On-Demand Emission of Single Raman Photons from a Quantum-Dot Biexciton.” Physical Review B, vol. 105, no. 4, 045302, American Physical Society (APS), 2022, doi:10.1103/physrevb.105.045302.","short":"T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, S. Schumacher, Physical Review B 105 (2022).","bibtex":"@article{Praschan_Heinze_Breddermann_Zrenner_Walther_Schumacher_2022, title={Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton}, volume={105}, DOI={10.1103/physrevb.105.045302}, number={4045302}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Praschan, Tom and Heinze, Dirk and Breddermann, Dominik and Zrenner, Artur and Walther, Andrea and Schumacher, Stefan}, year={2022} }","ama":"Praschan T, Heinze D, Breddermann D, Zrenner A, Walther A, Schumacher S. Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton. Physical Review B. 2022;105(4). doi:10.1103/physrevb.105.045302","ieee":"T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, and S. Schumacher, “Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton,” Physical Review B, vol. 105, no. 4, Art. no. 045302, 2022, doi: 10.1103/physrevb.105.045302.","chicago":"Praschan, Tom, Dirk Heinze, Dominik Breddermann, Artur Zrenner, Andrea Walther, and Stefan Schumacher. “Pulse Shaping for On-Demand Emission of Single Raman Photons from a Quantum-Dot Biexciton.” Physical Review B 105, no. 4 (2022). https://doi.org/10.1103/physrevb.105.045302."},"intvolume":" 105","date_updated":"2023-04-20T15:19:24Z","author":[{"last_name":"Praschan","full_name":"Praschan, Tom","first_name":"Tom"},{"first_name":"Dirk","full_name":"Heinze, Dirk","last_name":"Heinze"},{"last_name":"Breddermann","full_name":"Breddermann, Dominik","first_name":"Dominik"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944"},{"full_name":"Walther, Andrea","last_name":"Walther","first_name":"Andrea"},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"}],"volume":105,"doi":"10.1103/physrevb.105.045302"},{"title":"Nonlinear down-conversion in a single quantum dot","doi":"10.5281/ZENODO.6024228","date_updated":"2023-04-20T15:18:48Z","publisher":"LibreCat University","author":[{"full_name":"Jonas, Björn","last_name":"Jonas","first_name":"Björn"},{"first_name":"Dirk Florian","last_name":"Heinze","id":"10904","full_name":"Heinze, Dirk Florian"},{"full_name":"Schöll, Eva","last_name":"Schöll","first_name":"Eva"},{"last_name":"Kallert","full_name":"Kallert, Patricia","first_name":"Patricia"},{"full_name":"Langer, Timo","last_name":"Langer","first_name":"Timo"},{"first_name":"Sebastian","full_name":"Krehs, Sebastian","last_name":"Krehs"},{"last_name":"Widhalm","full_name":"Widhalm, Alex","first_name":"Alex"},{"full_name":"Jöns, Klaus","id":"85353","last_name":"Jöns","first_name":"Klaus"},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","id":"606","full_name":"Zrenner, Artur"}],"date_created":"2023-01-26T15:38:28Z","year":"2022","citation":{"ama":"Jonas B, Heinze DF, Schöll E, et al. Nonlinear Down-Conversion in a Single Quantum Dot. LibreCat University; 2022. doi:10.5281/ZENODO.6024228","ieee":"B. Jonas et al., Nonlinear down-conversion in a single quantum dot. LibreCat University, 2022.","chicago":"Jonas, Björn, Dirk Florian Heinze, Eva Schöll, Patricia Kallert, Timo Langer, Sebastian Krehs, Alex Widhalm, Klaus Jöns, Dirk Reuter, and Artur Zrenner. Nonlinear Down-Conversion in a Single Quantum Dot. LibreCat University, 2022. https://doi.org/10.5281/ZENODO.6024228.","apa":"Jonas, B., Heinze, D. F., Schöll, E., Kallert, P., Langer, T., Krehs, S., Widhalm, A., Jöns, K., Reuter, D., & Zrenner, A. (2022). Nonlinear down-conversion in a single quantum dot. LibreCat University. https://doi.org/10.5281/ZENODO.6024228","short":"B. Jonas, D.F. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. Jöns, D. Reuter, A. Zrenner, Nonlinear Down-Conversion in a Single Quantum Dot, LibreCat University, 2022.","bibtex":"@book{Jonas_Heinze_Schöll_Kallert_Langer_Krehs_Widhalm_Jöns_Reuter_Zrenner_2022, title={Nonlinear down-conversion in a single quantum dot}, DOI={10.5281/ZENODO.6024228}, publisher={LibreCat University}, author={Jonas, Björn and Heinze, Dirk Florian and Schöll, Eva and Kallert, Patricia and Langer, Timo and Krehs, Sebastian and Widhalm, Alex and Jöns, Klaus and Reuter, Dirk and Zrenner, Artur}, year={2022} }","mla":"Jonas, Björn, et al. Nonlinear Down-Conversion in a Single Quantum Dot. LibreCat University, 2022, doi:10.5281/ZENODO.6024228."},"project":[{"_id":"53","name":"TRR 142: TRR 142"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A3: TRR 142 - Subproject A3","_id":"60"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"40428","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"290"},{"_id":"292"},{"_id":"642"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"status":"public","type":"research_data"},{"publication":"arXiv:2105.12393","type":"preprint","status":"public","file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":1786455,"access_level":"closed","file_name":"2105.12393.pdf","file_id":"22808","date_updated":"2021-07-25T12:46:24Z","creator":"zrenner","date_created":"2021-07-25T12:46:24Z"}],"abstract":[{"lang":"eng","text":"Photonic quantum technologies [1] with applications in quantum\r\ncommunication, sensing as well as quantum simulation and computing, are on the\r\nverge of becoming commercially available. One crucial building block are\r\ntailored nanoscale integratable quantum light sources, matching the specific\r\nneeds of use-cases. Several different approaches to realize solid-state quantum\r\nemitters [2] with high performance [3] have been pursued. However, the\r\nproperties of the emitted single photons are always defined by the individual\r\nquantum light source and despite numerous quantum emitter tuning\r\ntechniques [4-7], scalability is still a major challenge. Here we show an\r\nemitter-independent method to tailor and control the properties of the single\r\nphoton emission. We demonstrate a laser-controlled down-conversion process from\r\nan excited state of a quantum three-level system [8]. Starting from a biexciton\r\nstate, a tunable control laser field defines a virtual state in a stimulated\r\nprocess. From there, spontaneous emission to the ground state leads to\r\noptically controlled single photon emission. Based on this concept, we\r\ndemonstrate energy tuning of the single photon emission with a control laser\r\nfield. The nature of the involved quantum states furthermore provides a unique\r\nbasis for the future control of polarization and bandwidth, as predicted by\r\ntheory [9,10]. Our demonstration marks an important step towards tailored\r\nsingle photon emission from a photonic quantum system based on quantum optical\r\nprinciples."}],"department":[{"_id":"15"},{"_id":"230"}],"user_id":"606","_id":"22807","language":[{"iso":"eng"}],"file_date_updated":"2021-07-25T12:46:24Z","ddc":["530"],"has_accepted_license":"1","citation":{"ama":"Jonas B, Heinze D, Schöll E, et al. Nonlinear down-conversion in a single quantum dot. arXiv:210512393. 2021.","chicago":"Jonas, B., D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” ArXiv:2105.12393, 2021.","ieee":"B. Jonas et al., “Nonlinear down-conversion in a single quantum dot,” arXiv:2105.12393. 2021.","apa":"Jonas, B., Heinze, D., Schöll, E., Kallert, P., Langer, T., Krehs, S., … Zrenner, A. (2021). Nonlinear down-conversion in a single quantum dot. ArXiv:2105.12393.","mla":"Jonas, B., et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” ArXiv:2105.12393, 2021.","bibtex":"@article{Jonas_Heinze_Schöll_Kallert_Langer_Krehs_Widhalm_Jöns_Reuter_Schumacher_et al._2021, title={Nonlinear down-conversion in a single quantum dot}, journal={arXiv:2105.12393}, author={Jonas, B. and Heinze, D. and Schöll, E. and Kallert, P. and Langer, T. and Krehs, S. and Widhalm, A. and Jöns, K. D. and Reuter, D. and Schumacher, S. and et al.}, year={2021} }","short":"B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K.D. Jöns, D. Reuter, S. Schumacher, A. Zrenner, ArXiv:2105.12393 (2021)."},"year":"2021","author":[{"first_name":"B.","last_name":"Jonas","full_name":"Jonas, B."},{"last_name":"Heinze","full_name":"Heinze, D.","first_name":"D."},{"last_name":"Schöll","full_name":"Schöll, E.","first_name":"E."},{"full_name":"Kallert, P.","last_name":"Kallert","first_name":"P."},{"first_name":"T.","last_name":"Langer","full_name":"Langer, T."},{"first_name":"S.","full_name":"Krehs, S.","last_name":"Krehs"},{"full_name":"Widhalm, A.","last_name":"Widhalm","first_name":"A."},{"last_name":"Jöns","full_name":"Jöns, K. D.","first_name":"K. D."},{"first_name":"D.","full_name":"Reuter, D.","last_name":"Reuter"},{"first_name":"S.","full_name":"Schumacher, S.","last_name":"Schumacher"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","id":"606","full_name":"Zrenner, Artur"}],"date_created":"2021-07-25T12:45:25Z","date_updated":"2022-01-06T06:55:42Z","title":"Nonlinear down-conversion in a single quantum dot"},{"type":"journal_article","publication":"Crystals","status":"public","abstract":[{"text":"Potassium titanyl phosphate (KTP) is a nonlinear optical material with applications in high-power frequency conversion or quasi-phase matching in submicron period domain grids. A prerequisite for these applications is a precise control and understanding of the poling mechanisms to enable the fabrication of high-grade domain grids. In contrast to the widely used material lithium niobate, the domain growth in KTP is less studied, because many standard methods, such as selective etching or polarization microscopy, provides less insight or are not applicable on non-polar surfaces, respectively. In this work, we present results of confocal Raman-spectroscopy of the ferroelectric domain structure in KTP. This analytical method allows for the visualization of domain grids of the non-polar KTP y-face and therefore more insight into the domain-growth and -structure in KTP, which can be used for improved domain fabrication.","lang":"eng"}],"user_id":"13244","department":[{"_id":"15"},{"_id":"288"}],"_id":"23826","language":[{"iso":"eng"}],"article_number":"1086","publication_status":"published","publication_identifier":{"issn":["2073-4352"]},"citation":{"ieee":"J. Brockmeier et al., “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging,” Crystals, Art. no. 1086, 2021, doi: 10.3390/cryst11091086.","chicago":"Brockmeier, Julian, Peter Walter Martin Mackwitz, Michael Rüsing, Christof Eigner, Laura Padberg, Matteo Santandrea, Christine Silberhorn, Artur Zrenner, and Gerhard Berth. “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” Crystals, 2021. https://doi.org/10.3390/cryst11091086.","ama":"Brockmeier J, Mackwitz PWM, Rüsing M, et al. Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. Crystals. Published online 2021. doi:10.3390/cryst11091086","apa":"Brockmeier, J., Mackwitz, P. W. M., Rüsing, M., Eigner, C., Padberg, L., Santandrea, M., Silberhorn, C., Zrenner, A., & Berth, G. (2021). Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. Crystals, Article 1086. https://doi.org/10.3390/cryst11091086","bibtex":"@article{Brockmeier_Mackwitz_Rüsing_Eigner_Padberg_Santandrea_Silberhorn_Zrenner_Berth_2021, title={Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging}, DOI={10.3390/cryst11091086}, number={1086}, journal={Crystals}, author={Brockmeier, Julian and Mackwitz, Peter Walter Martin and Rüsing, Michael and Eigner, Christof and Padberg, Laura and Santandrea, Matteo and Silberhorn, Christine and Zrenner, Artur and Berth, Gerhard}, year={2021} }","short":"J. Brockmeier, P.W.M. Mackwitz, M. Rüsing, C. Eigner, L. Padberg, M. Santandrea, C. Silberhorn, A. Zrenner, G. Berth, Crystals (2021).","mla":"Brockmeier, Julian, et al. “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” Crystals, 1086, 2021, doi:10.3390/cryst11091086."},"year":"2021","date_created":"2021-09-07T08:09:36Z","author":[{"first_name":"Julian","last_name":"Brockmeier","full_name":"Brockmeier, Julian","id":"44807"},{"last_name":"Mackwitz","full_name":"Mackwitz, Peter Walter Martin","first_name":"Peter Walter Martin"},{"first_name":"Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","id":"22501","full_name":"Rüsing, Michael"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"first_name":"Matteo","id":"55095","full_name":"Santandrea, Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"},{"last_name":"Berth","full_name":"Berth, Gerhard","id":"53","first_name":"Gerhard"}],"date_updated":"2023-10-06T07:40:37Z","doi":"10.3390/cryst11091086","title":"Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging"},{"year":"2021","title":"Optoelectronic sampling of ultrafast electric transients with single quantum dots","date_created":"2021-11-03T10:32:03Z","abstract":[{"text":"In our work, we have engineered low capacitance single quantum dot photodiodes as sensor devices for the optoelectronic sampling of ultrafast electric signals. By the Stark effect, a time-dependent electric signal is converted into a time-dependent shift of the transition energy. This shift is measured accurately by resonant ps laser spectroscopy with photocurrent detection. In our experiments, we sample the laser synchronous output pulse of an ultrafast CMOS circuit with high resolution. With our quantum dot sensor device, we were able to sample transients below 20 ps with a voltage resolution in the mV-range.","lang":"eng"}],"file":[{"date_updated":"2021-11-04T13:46:27Z","creator":"fossie","date_created":"2021-11-04T13:46:27Z","file_size":1999652,"file_id":"27157","embargo":"2022-11-04","access_level":"local","file_name":"2021-11 Widhalm - APL - Optoelectronic sampling of ultrafast electric transients with single quantum dots (published version).pdf","embargo_to":"open_access","content_type":"application/pdf","relation":"main_file"}],"publication":"Applied Physics Letters","ddc":["530"],"keyword":["tet_topic_qd"],"language":[{"iso":"eng"}],"citation":{"ama":"Widhalm A, Krehs S, Siebert D, et al. Optoelectronic sampling of ultrafast electric transients with single quantum dots. Applied Physics Letters. 2021;119:181109. doi:10.1063/5.0061358","chicago":"Widhalm, Alex, Sebastian Krehs, Dustin Siebert, Nand Lal Sharma, Timo Langer, Björn Jonas, Dirk Reuter, Andreas Thiede, Jens Förstner, and Artur Zrenner. “Optoelectronic Sampling of Ultrafast Electric Transients with Single Quantum Dots.” Applied Physics Letters 119 (2021): 181109. https://doi.org/10.1063/5.0061358.","ieee":"A. Widhalm et al., “Optoelectronic sampling of ultrafast electric transients with single quantum dots,” Applied Physics Letters, vol. 119, p. 181109, 2021, doi: 10.1063/5.0061358.","mla":"Widhalm, Alex, et al. “Optoelectronic Sampling of Ultrafast Electric Transients with Single Quantum Dots.” Applied Physics Letters, vol. 119, 2021, p. 181109, doi:10.1063/5.0061358.","bibtex":"@article{Widhalm_Krehs_Siebert_Sharma_Langer_Jonas_Reuter_Thiede_Förstner_Zrenner_2021, title={Optoelectronic sampling of ultrafast electric transients with single quantum dots}, volume={119}, DOI={10.1063/5.0061358}, journal={Applied Physics Letters}, author={Widhalm, Alex and Krehs, Sebastian and Siebert, Dustin and Sharma, Nand Lal and Langer, Timo and Jonas, Björn and Reuter, Dirk and Thiede, Andreas and Förstner, Jens and Zrenner, Artur}, year={2021}, pages={181109} }","short":"A. Widhalm, S. Krehs, D. Siebert, N.L. Sharma, T. Langer, B. Jonas, D. Reuter, A. Thiede, J. Förstner, A. Zrenner, Applied Physics Letters 119 (2021) 181109.","apa":"Widhalm, A., Krehs, S., Siebert, D., Sharma, N. L., Langer, T., Jonas, B., Reuter, D., Thiede, A., Förstner, J., & Zrenner, A. (2021). Optoelectronic sampling of ultrafast electric transients with single quantum dots. Applied Physics Letters, 119, 181109. https://doi.org/10.1063/5.0061358"},"page":"181109","intvolume":" 119","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["0003-6951","1077-3118"]},"doi":"10.1063/5.0061358","date_updated":"2023-01-24T11:11:54Z","author":[{"first_name":"Alex","last_name":"Widhalm","full_name":"Widhalm, Alex"},{"first_name":"Sebastian","last_name":"Krehs","full_name":"Krehs, Sebastian"},{"first_name":"Dustin","last_name":"Siebert","full_name":"Siebert, Dustin"},{"full_name":"Sharma, Nand Lal","last_name":"Sharma","first_name":"Nand Lal"},{"full_name":"Langer, Timo","last_name":"Langer","first_name":"Timo"},{"first_name":"Björn","full_name":"Jonas, Björn","last_name":"Jonas"},{"first_name":"Dirk","last_name":"Reuter","full_name":"Reuter, Dirk","id":"37763"},{"first_name":"Andreas","last_name":"Thiede","full_name":"Thiede, Andreas","id":"538"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","id":"158"},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","id":"606","full_name":"Zrenner, Artur"}],"volume":119,"status":"public","type":"journal_article","file_date_updated":"2021-11-04T13:46:27Z","project":[{"name":"TRR 142 - Subproject C4","_id":"74"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142 - Subproject A3","_id":"60"}],"_id":"27099","user_id":"158","department":[{"_id":"15"},{"_id":"230"},{"_id":"61"},{"_id":"51"}]},{"title":"Spatially resolved light field analysis of the second-harmonic signal of χ(2)-materials in the tight focusing regime","doi":"10.1063/1.5133476","date_updated":"2022-01-06T06:55:23Z","date_created":"2021-05-09T06:27:56Z","author":[{"first_name":"K. J.","full_name":"Spychala, K. J.","last_name":"Spychala"},{"first_name":"P.","full_name":"Mackwitz, P.","last_name":"Mackwitz"},{"first_name":"A.","full_name":"Widhalm, A.","last_name":"Widhalm"},{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard"},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","id":"606","full_name":"Zrenner, Artur","first_name":"Artur"}],"year":"2020","citation":{"apa":"Spychala, K. J., Mackwitz, P., Widhalm, A., Berth, G., & Zrenner, A. (2020). Spatially resolved light field analysis of the second-harmonic signal of χ(2)-materials in the tight focusing regime. Journal of Applied Physics. https://doi.org/10.1063/1.5133476","short":"K.J. Spychala, P. Mackwitz, A. Widhalm, G. Berth, A. Zrenner, Journal of Applied Physics (2020).","bibtex":"@article{Spychala_Mackwitz_Widhalm_Berth_Zrenner_2020, title={Spatially resolved light field analysis of the second-harmonic signal of χ(2)-materials in the tight focusing regime}, DOI={10.1063/1.5133476}, number={023103}, journal={Journal of Applied Physics}, author={Spychala, K. J. and Mackwitz, P. and Widhalm, A. and Berth, Gerhard and Zrenner, Artur}, year={2020} }","mla":"Spychala, K. J., et al. “Spatially Resolved Light Field Analysis of the Second-Harmonic Signal of χ(2)-Materials in the Tight Focusing Regime.” Journal of Applied Physics, 023103, 2020, doi:10.1063/1.5133476.","chicago":"Spychala, K. J., P. Mackwitz, A. Widhalm, Gerhard Berth, and Artur Zrenner. “Spatially Resolved Light Field Analysis of the Second-Harmonic Signal of χ(2)-Materials in the Tight Focusing Regime.” Journal of Applied Physics, 2020. https://doi.org/10.1063/1.5133476.","ieee":"K. J. Spychala, P. Mackwitz, A. Widhalm, G. Berth, and A. Zrenner, “Spatially resolved light field analysis of the second-harmonic signal of χ(2)-materials in the tight focusing regime,” Journal of Applied Physics, 2020.","ama":"Spychala KJ, Mackwitz P, Widhalm A, Berth G, Zrenner A. Spatially resolved light field analysis of the second-harmonic signal of χ(2)-materials in the tight focusing regime. Journal of Applied Physics. 2020. doi:10.1063/1.5133476"},"publication_status":"published","publication_identifier":{"issn":["0021-8979","1089-7550"]},"article_number":"023103","language":[{"iso":"eng"}],"_id":"22054","user_id":"606","department":[{"_id":"15"},{"_id":"230"}],"status":"public","type":"journal_article","publication":"Journal of Applied Physics"},{"_id":"22056","department":[{"_id":"15"},{"_id":"230"}],"user_id":"14931","article_number":"234102","language":[{"iso":"eng"}],"publication":"Journal of Applied Physics","type":"journal_article","status":"public","date_updated":"2023-10-09T08:07:57Z","author":[{"first_name":"K. J.","full_name":"Spychala, K. J.","last_name":"Spychala"},{"full_name":"Mackwitz, P.","last_name":"Mackwitz","first_name":"P."},{"id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577","first_name":"Michael"},{"full_name":"Widhalm, A.","last_name":"Widhalm","first_name":"A."},{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard","id":"53"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner"}],"date_created":"2021-05-09T06:33:08Z","title":"Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism","doi":"10.1063/5.0025284","publication_identifier":{"issn":["0021-8979","1089-7550"]},"publication_status":"published","year":"2020","citation":{"mla":"Spychala, K. J., et al. “Nonlinear Focal Mapping of Ferroelectric Domain Walls in LiNbO3: Analysis of the SHG Microscopy Contrast Mechanism.” Journal of Applied Physics, 234102, 2020, doi:10.1063/5.0025284.","bibtex":"@article{Spychala_Mackwitz_Rüsing_Widhalm_Berth_Silberhorn_Zrenner_2020, title={Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism}, DOI={10.1063/5.0025284}, number={234102}, journal={Journal of Applied Physics}, author={Spychala, K. J. and Mackwitz, P. and Rüsing, Michael and Widhalm, A. and Berth, Gerhard and Silberhorn, Christine and Zrenner, Artur}, year={2020} }","short":"K.J. Spychala, P. Mackwitz, M. Rüsing, A. Widhalm, G. Berth, C. Silberhorn, A. Zrenner, Journal of Applied Physics (2020).","apa":"Spychala, K. J., Mackwitz, P., Rüsing, M., Widhalm, A., Berth, G., Silberhorn, C., & Zrenner, A. (2020). Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism. Journal of Applied Physics, Article 234102. https://doi.org/10.1063/5.0025284","ama":"Spychala KJ, Mackwitz P, Rüsing M, et al. Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism. Journal of Applied Physics. Published online 2020. doi:10.1063/5.0025284","chicago":"Spychala, K. J., P. Mackwitz, Michael Rüsing, A. Widhalm, Gerhard Berth, Christine Silberhorn, and Artur Zrenner. “Nonlinear Focal Mapping of Ferroelectric Domain Walls in LiNbO3: Analysis of the SHG Microscopy Contrast Mechanism.” Journal of Applied Physics, 2020. https://doi.org/10.1063/5.0025284.","ieee":"K. J. Spychala et al., “Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism,” Journal of Applied Physics, Art. no. 234102, 2020, doi: 10.1063/5.0025284."}},{"publication":"Optics Express","type":"journal_article","status":"public","_id":"25920","project":[{"name":"TRR 142 - Project Area B","_id":"55"}],"department":[{"_id":"15"},{"_id":"288"}],"user_id":"14931","article_number":"24353","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","year":"2020","citation":{"apa":"Padberg, L., Santandrea, M., Rüsing, M., Brockmeier, J., Mackwitz, P., Berth, G., Zrenner, A., Eigner, C., & Silberhorn, C. (2020). Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides. Optics Express, Article 24353. https://doi.org/10.1364/oe.397074","short":"L. Padberg, M. Santandrea, M. Rüsing, J. Brockmeier, P. Mackwitz, G. Berth, A. Zrenner, C. Eigner, C. Silberhorn, Optics Express (2020).","mla":"Padberg, Laura, et al. “Characterisation of Width-Dependent Diffusion Dynamics in Rubidium-Exchanged KTP Waveguides.” Optics Express, 24353, 2020, doi:10.1364/oe.397074.","bibtex":"@article{Padberg_Santandrea_Rüsing_Brockmeier_Mackwitz_Berth_Zrenner_Eigner_Silberhorn_2020, title={Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides}, DOI={10.1364/oe.397074}, number={24353}, journal={Optics Express}, author={Padberg, Laura and Santandrea, Matteo and Rüsing, Michael and Brockmeier, Julian and Mackwitz, Peter and Berth, Gerhard and Zrenner, Artur and Eigner, Christof and Silberhorn, Christine}, year={2020} }","chicago":"Padberg, Laura, Matteo Santandrea, Michael Rüsing, Julian Brockmeier, Peter Mackwitz, Gerhard Berth, Artur Zrenner, Christof Eigner, and Christine Silberhorn. “Characterisation of Width-Dependent Diffusion Dynamics in Rubidium-Exchanged KTP Waveguides.” Optics Express, 2020. https://doi.org/10.1364/oe.397074.","ieee":"L. Padberg et al., “Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides,” Optics Express, Art. no. 24353, 2020, doi: 10.1364/oe.397074.","ama":"Padberg L, Santandrea M, Rüsing M, et al. Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides. Optics Express. Published online 2020. doi:10.1364/oe.397074"},"date_updated":"2023-10-09T08:27:41Z","author":[{"first_name":"Laura","last_name":"Padberg","full_name":"Padberg, Laura","id":"40300"},{"id":"55095","full_name":"Santandrea, Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","first_name":"Matteo"},{"first_name":"Michael","full_name":"Rüsing, Michael","id":"22501","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"last_name":"Brockmeier","full_name":"Brockmeier, Julian","id":"44807","first_name":"Julian"},{"last_name":"Mackwitz","full_name":"Mackwitz, Peter","first_name":"Peter"},{"first_name":"Gerhard","full_name":"Berth, Gerhard","id":"53","last_name":"Berth"},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2021-10-08T11:12:36Z","title":"Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides","doi":"10.1364/oe.397074"},{"publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["0003-6951","1077-3118"]},"citation":{"chicago":"Mukherjee, Amlan, Alex Widhalm, Dustin Siebert, Sebastian Krehs, Nandlal Sharma, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Electrically Controlled Rapid Adiabatic Passage in a Single Quantum Dot.” Applied Physics Letters 116 (2020): 251103. https://doi.org/10.1063/5.0012257.","ieee":"A. Mukherjee et al., “Electrically controlled rapid adiabatic passage in a single quantum dot,” Applied Physics Letters, vol. 116, p. 251103, 2020, doi: 10.1063/5.0012257.","ama":"Mukherjee A, Widhalm A, Siebert D, et al. Electrically controlled rapid adiabatic passage in a single quantum dot. Applied Physics Letters. 2020;116:251103. doi:10.1063/5.0012257","apa":"Mukherjee, A., Widhalm, A., Siebert, D., Krehs, S., Sharma, N., Thiede, A., Reuter, D., Förstner, J., & Zrenner, A. (2020). Electrically controlled rapid adiabatic passage in a single quantum dot. Applied Physics Letters, 116, 251103. https://doi.org/10.1063/5.0012257","mla":"Mukherjee, Amlan, et al. “Electrically Controlled Rapid Adiabatic Passage in a Single Quantum Dot.” Applied Physics Letters, vol. 116, 2020, p. 251103, doi:10.1063/5.0012257.","short":"A. Mukherjee, A. Widhalm, D. Siebert, S. Krehs, N. Sharma, A. Thiede, D. Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 116 (2020) 251103.","bibtex":"@article{Mukherjee_Widhalm_Siebert_Krehs_Sharma_Thiede_Reuter_Förstner_Zrenner_2020, title={Electrically controlled rapid adiabatic passage in a single quantum dot}, volume={116}, DOI={10.1063/5.0012257}, journal={Applied Physics Letters}, author={Mukherjee, Amlan and Widhalm, Alex and Siebert, Dustin and Krehs, Sebastian and Sharma, Nandlal and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2020}, pages={251103} }"},"intvolume":" 116","page":"251103","date_updated":"2023-01-24T11:12:09Z","author":[{"first_name":"Amlan","last_name":"Mukherjee","full_name":"Mukherjee, Amlan"},{"first_name":"Alex","full_name":"Widhalm, Alex","last_name":"Widhalm"},{"full_name":"Siebert, Dustin","last_name":"Siebert","first_name":"Dustin"},{"first_name":"Sebastian","last_name":"Krehs","full_name":"Krehs, Sebastian"},{"first_name":"Nandlal","last_name":"Sharma","full_name":"Sharma, Nandlal"},{"full_name":"Thiede, Andreas","id":"538","last_name":"Thiede","first_name":"Andreas"},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"},{"full_name":"Zrenner, Artur","id":"606","last_name":"Zrenner","orcid":"0000-0002-5190-0944","first_name":"Artur"}],"volume":116,"doi":"10.1063/5.0012257","type":"journal_article","status":"public","project":[{"_id":"56","name":"TRR 142 - Project Area C"},{"name":"TRR 142 - Subproject C4","_id":"74"},{"name":"TRR 142","_id":"53"},{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"17322","user_id":"158","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"51"}],"file_date_updated":"2022-01-06T06:53:07Z","year":"2020","date_created":"2020-06-25T12:31:42Z","title":"Electrically controlled rapid adiabatic passage in a single quantum dot","publication":"Applied Physics Letters","file":[{"file_id":"17325","access_level":"request","date_created":"2020-06-25T12:45:04Z","date_updated":"2022-01-06T06:53:07Z","relation":"main_file","embargo_to":"open_access","embargo":"2021-06-25","file_name":"2020-06 Widhalm - APL - Electrically controlled RAP in single QD (official).pdf","file_size":1359326,"creator":"fossie","content_type":"application/pdf"}],"ddc":["530"],"keyword":["tet_topic_qd"],"language":[{"iso":"eng"}]},{"_id":"39966","user_id":"42514","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"51"}],"language":[{"iso":"eng"}],"type":"conference_abstract","publication":"11th International Conference on Quantum Dots","status":"public","date_updated":"2025-02-12T07:53:06Z","date_created":"2023-01-25T11:11:42Z","author":[{"first_name":"Jens","id":"158","full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner"},{"first_name":"A.","last_name":"Widhalm","full_name":"Widhalm, A."},{"first_name":"A.","last_name":"Mukherjee","full_name":"Mukherjee, A."},{"full_name":"Krehs, S.","last_name":"Krehs","first_name":"S."},{"first_name":"B.","last_name":"Jonas","full_name":"Jonas, B."},{"full_name":"Spychala, K.","last_name":"Spychala","first_name":"K."},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"},{"last_name":"Thiede","id":"538","full_name":"Thiede, Andreas","first_name":"Andreas"},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944"}],"title":"Ultrafast electric control of a single QD exciton","year":"2020","place":"Munich/Germany","citation":{"apa":"Förstner, J., Widhalm, A., Mukherjee, A., Krehs, S., Jonas, B., Spychala, K., Förstner, J., Thiede, A., Reuter, D., & Zrenner, A. (2020). Ultrafast electric control of a single QD exciton. 11th International Conference on Quantum Dots.","mla":"Förstner, Jens, et al. “Ultrafast Electric Control of a Single QD Exciton.” 11th International Conference on Quantum Dots, 2020.","bibtex":"@inproceedings{Förstner_Widhalm_Mukherjee_Krehs_Jonas_Spychala_Förstner_Thiede_Reuter_Zrenner_2020, place={Munich/Germany}, title={Ultrafast electric control of a single QD exciton}, booktitle={11th International Conference on Quantum Dots}, author={Förstner, Jens and Widhalm, A. and Mukherjee, A. and Krehs, S. and Jonas, B. and Spychala, K. and Förstner, Jens and Thiede, Andreas and Reuter, Dirk and Zrenner, Artur}, year={2020} }","short":"J. Förstner, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala, J. Förstner, A. Thiede, D. Reuter, A. Zrenner, in: 11th International Conference on Quantum Dots, Munich/Germany, 2020.","ama":"Förstner J, Widhalm A, Mukherjee A, et al. Ultrafast electric control of a single QD exciton. In: 11th International Conference on Quantum Dots. ; 2020.","ieee":"J. Förstner et al., “Ultrafast electric control of a single QD exciton,” 2020.","chicago":"Förstner, Jens, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala, Jens Förstner, Andreas Thiede, Dirk Reuter, and Artur Zrenner. “Ultrafast Electric Control of a Single QD Exciton.” In 11th International Conference on Quantum Dots. Munich/Germany, 2020."}},{"type":"journal_article","publication":"Physical Review Materials","status":"public","abstract":[{"text":"In recent years, Raman spectroscopy has been used to visualize and analyze ferroelectric domain structures.\r\nThe technique makes use of the fact that the intensity or frequency of certain phonons is strongly influenced\r\nby the presence of domain walls. Although the method is used frequently, the underlying mechanism responsible\r\nfor the changes in the spectra is not fully understood. This inhibits deeper analysis of domain structures based\r\non this method. Two different models have been proposed. However, neither model completely explains all\r\nobservations. In this work, we have systematically investigated domain walls in different scattering geometries\r\nwith Raman spectroscopy in the common ferroelectric materials used in integrated optics, i.e., KTiOPO4,\r\nLiNbO3, and LiTaO3. Based on the two models, we can demonstrate that the observed contrast for domain\r\nwalls is in fact based on two different effects. We can identify on the one hand microscopic changes at the\r\ndomain wall, e.g., strain and electric fields, and on the other hand a macroscopic change of selection rules at the\r\ndomain wall. While the macroscopic relaxation of selection rules can be explained by the directional dispersion\r\nof the phonons in agreement with previous propositions, the microscopic changes can be explained qualitatively\r\nin terms of a simplified atomistic model.","lang":"eng"}],"user_id":"22501","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"288"}],"project":[{"grant_number":"231447078","_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area B","_id":"55"},{"_id":"69","name":"TRR 142 - Subproject B4","grant_number":"231447078"},{"_id":"70","name":"TRR 142 - Subproject B5","grant_number":"231447078"}],"_id":"4769","language":[{"iso":"eng"}],"article_type":"original","issue":"10","publication_status":"published","publication_identifier":{"issn":["2475-9953"]},"citation":{"short":"M. Rüsing, S. Neufeld, J. Brockmeier, C. Eigner, P. Mackwitz, K. Spychala, C. Silberhorn, W.G. Schmidt, G. Berth, A. Zrenner, S. Sanna, Physical Review Materials 2 (2018).","bibtex":"@article{Rüsing_Neufeld_Brockmeier_Eigner_Mackwitz_Spychala_Silberhorn_Schmidt_Berth_Zrenner_et al._2018, title={Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism}, volume={2}, DOI={10.1103/physrevmaterials.2.103801}, number={10}, journal={Physical Review Materials}, publisher={American Physical Society (APS)}, author={Rüsing, Michael and Neufeld, Sergej and Brockmeier, Julian and Eigner, Christof and Mackwitz, P. and Spychala, K. and Silberhorn, Christine and Schmidt, Wolf Gero and Berth, Gerhard and Zrenner, Artur and et al.}, year={2018} }","mla":"Rüsing, Michael, et al. “Imaging of 180∘ Ferroelectric Domain Walls in Uniaxial Ferroelectrics by Confocal Raman Spectroscopy: Unraveling the Contrast Mechanism.” Physical Review Materials, vol. 2, no. 10, American Physical Society (APS), 2018, doi:10.1103/physrevmaterials.2.103801.","apa":"Rüsing, M., Neufeld, S., Brockmeier, J., Eigner, C., Mackwitz, P., Spychala, K., Silberhorn, C., Schmidt, W. G., Berth, G., Zrenner, A., & Sanna, S. (2018). Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism. Physical Review Materials, 2(10). https://doi.org/10.1103/physrevmaterials.2.103801","ama":"Rüsing M, Neufeld S, Brockmeier J, et al. Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism. Physical Review Materials. 2018;2(10). doi:10.1103/physrevmaterials.2.103801","chicago":"Rüsing, Michael, Sergej Neufeld, Julian Brockmeier, Christof Eigner, P. Mackwitz, K. Spychala, Christine Silberhorn, et al. “Imaging of 180∘ Ferroelectric Domain Walls in Uniaxial Ferroelectrics by Confocal Raman Spectroscopy: Unraveling the Contrast Mechanism.” Physical Review Materials 2, no. 10 (2018). https://doi.org/10.1103/physrevmaterials.2.103801.","ieee":"M. Rüsing et al., “Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism,” Physical Review Materials, vol. 2, no. 10, 2018, doi: 10.1103/physrevmaterials.2.103801."},"intvolume":" 2","year":"2018","author":[{"id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577","first_name":"Michael"},{"last_name":"Neufeld","id":"23261","full_name":"Neufeld, Sergej","first_name":"Sergej"},{"id":"44807","full_name":"Brockmeier, Julian","last_name":"Brockmeier","first_name":"Julian"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"last_name":"Mackwitz","full_name":"Mackwitz, P.","first_name":"P."},{"first_name":"K.","full_name":"Spychala, K.","last_name":"Spychala"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","id":"468","full_name":"Schmidt, Wolf Gero"},{"first_name":"Gerhard","id":"53","full_name":"Berth, Gerhard","last_name":"Berth"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"last_name":"Sanna","full_name":"Sanna, S.","first_name":"S."}],"date_created":"2018-10-18T08:50:47Z","volume":2,"date_updated":"2023-10-11T09:01:48Z","publisher":"American Physical Society (APS)","doi":"10.1103/physrevmaterials.2.103801","title":"Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism"},{"issue":"11","year":"2018","date_created":"2018-07-05T09:47:26Z","title":"Ultrafast electric phase control of a single exciton qubit","publication":"Applied Physics Letters","abstract":[{"lang":"eng","text":"We report on the coherent phase manipulation of quantum dot excitons by electric means. For our\r\nexperiments, we use a low capacitance single quantum dot photodiode which is electrically\r\ncontrolled by a custom designed SiGe:C BiCMOS chip. The phase manipulation is performed and\r\nquantified in a Ramsey experiment, where ultrafast transient detuning of the exciton energy is\r\nperformed synchronous to double pulse p/2 ps laser excitation. We are able to demonstrate\r\nelectrically controlled phase manipulations with magnitudes up to 3p within 100 ps which is below\r\nthe dephasing time of the quantum dot exciton."}],"file":[{"date_created":"2018-08-16T07:42:38Z","creator":"fossie","date_updated":"2022-01-06T06:59:16Z","embargo":"2019-03-01","file_name":"2018-03 Widhalm APL Ultrafast electric phase control of a single exciton qubit.pdf","file_id":"3914","access_level":"request","file_size":923692,"content_type":"application/pdf","embargo_to":"open_access","relation":"main_file"}],"keyword":["tet_topic_qd"],"ddc":["530"],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["0003-6951"]},"has_accepted_license":"1","publication_status":"published","page":"111105","intvolume":" 112","citation":{"apa":"Widhalm, A., Mukherjee, A., Krehs, S., Sharma, N., Kölling, P., Thiede, A., Reuter, D., Förstner, J., & Zrenner, A. (2018). Ultrafast electric phase control of a single exciton qubit. Applied Physics Letters, 112(11), 111105. https://doi.org/10.1063/1.5020364","short":"A. Widhalm, A. Mukherjee, S. Krehs, N. Sharma, P. Kölling, A. Thiede, D. Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 112 (2018) 111105.","bibtex":"@article{Widhalm_Mukherjee_Krehs_Sharma_Kölling_Thiede_Reuter_Förstner_Zrenner_2018, title={Ultrafast electric phase control of a single exciton qubit}, volume={112}, DOI={10.1063/1.5020364}, number={11}, journal={Applied Physics Letters}, author={Widhalm, Alex and Mukherjee, Amlan and Krehs, Sebastian and Sharma, Nandlal and Kölling, Peter and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2018}, pages={111105} }","mla":"Widhalm, Alex, et al. “Ultrafast Electric Phase Control of a Single Exciton Qubit.” Applied Physics Letters, vol. 112, no. 11, 2018, p. 111105, doi:10.1063/1.5020364.","ama":"Widhalm A, Mukherjee A, Krehs S, et al. Ultrafast electric phase control of a single exciton qubit. Applied Physics Letters. 2018;112(11):111105. doi:10.1063/1.5020364","ieee":"A. Widhalm et al., “Ultrafast electric phase control of a single exciton qubit,” Applied Physics Letters, vol. 112, no. 11, p. 111105, 2018, doi: 10.1063/1.5020364.","chicago":"Widhalm, Alex, Amlan Mukherjee, Sebastian Krehs, Nandlal Sharma, Peter Kölling, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Ultrafast Electric Phase Control of a Single Exciton Qubit.” Applied Physics Letters 112, no. 11 (2018): 111105. https://doi.org/10.1063/1.5020364."},"date_updated":"2023-01-24T11:00:08Z","volume":112,"author":[{"first_name":"Alex","full_name":"Widhalm, Alex","last_name":"Widhalm"},{"full_name":"Mukherjee, Amlan","last_name":"Mukherjee","first_name":"Amlan"},{"first_name":"Sebastian","full_name":"Krehs, Sebastian","last_name":"Krehs"},{"last_name":"Sharma","full_name":"Sharma, Nandlal","first_name":"Nandlal"},{"full_name":"Kölling, Peter","last_name":"Kölling","first_name":"Peter"},{"first_name":"Andreas","last_name":"Thiede","id":"538","full_name":"Thiede, Andreas"},{"last_name":"Reuter","id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk"},{"id":"158","full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","first_name":"Jens"},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"}],"doi":"10.1063/1.5020364","type":"journal_article","status":"public","_id":"3427","project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"_id":"74","name":"TRR 142 - Subproject C4"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"61"},{"_id":"51"}],"user_id":"158","article_type":"original","file_date_updated":"2022-01-06T06:59:16Z"},{"date_created":"2018-07-05T11:30:34Z","author":[{"last_name":"Hett","full_name":"Hett, T.","first_name":"T."},{"full_name":"Krämmer, S.","last_name":"Krämmer","first_name":"S."},{"last_name":"Hilleringmann","full_name":"Hilleringmann, U.","first_name":"U."},{"first_name":"H.","last_name":"Kalt","full_name":"Kalt, H."},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","id":"606","full_name":"Zrenner, Artur"}],"date_updated":"2022-01-06T06:59:16Z","doi":"10.1016/j.jlumin.2016.11.016","title":"High-Q whispering gallery microdisk resonators based on silicon oxynitride","publication_identifier":{"issn":["0022-2313"]},"publication_status":"published","page":"131--134","citation":{"ieee":"T. Hett, S. Krämmer, U. Hilleringmann, H. Kalt, and A. Zrenner, “High-Q whispering gallery microdisk resonators based on silicon oxynitride,” JOURNAL OF LUMINESCENCE, pp. 131--134, 2017.","chicago":"Hett, T., S. Krämmer, U. Hilleringmann, H. Kalt, and Artur Zrenner. “High-Q Whispering Gallery Microdisk Resonators Based on Silicon Oxynitride.” JOURNAL OF LUMINESCENCE, 2017, 131--134. https://doi.org/10.1016/j.jlumin.2016.11.016.","ama":"Hett T, Krämmer S, Hilleringmann U, Kalt H, Zrenner A. High-Q whispering gallery microdisk resonators based on silicon oxynitride. JOURNAL OF LUMINESCENCE. 2017:131--134. doi:10.1016/j.jlumin.2016.11.016","mla":"Hett, T., et al. “High-Q Whispering Gallery Microdisk Resonators Based on Silicon Oxynitride.” JOURNAL OF LUMINESCENCE, 2017, pp. 131--134, doi:10.1016/j.jlumin.2016.11.016.","short":"T. Hett, S. Krämmer, U. Hilleringmann, H. Kalt, A. Zrenner, JOURNAL OF LUMINESCENCE (2017) 131--134.","bibtex":"@article{Hett_Krämmer_Hilleringmann_Kalt_Zrenner_2017, title={High-Q whispering gallery microdisk resonators based on silicon oxynitride}, DOI={10.1016/j.jlumin.2016.11.016}, journal={JOURNAL OF LUMINESCENCE}, author={Hett, T. and Krämmer, S. and Hilleringmann, U. and Kalt, H. and Zrenner, Artur}, year={2017}, pages={131--134} }","apa":"Hett, T., Krämmer, S., Hilleringmann, U., Kalt, H., & Zrenner, A. (2017). High-Q whispering gallery microdisk resonators based on silicon oxynitride. JOURNAL OF LUMINESCENCE, 131--134. https://doi.org/10.1016/j.jlumin.2016.11.016"},"year":"2017","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"user_id":"49428","_id":"3433","language":[{"iso":"eng"}],"article_type":"original","publication":"JOURNAL OF LUMINESCENCE","type":"journal_article","status":"public","abstract":[{"text":"In this article we demonstrate a fully CMOS compatible fabrication process for the realization of microdisk resonators based on silicon oxynitride. The layer fabrication using plasma enhanced chemical vapor deposition is optimized in terms of surface roughness and internal material absorption. Resulting surface roughness due to the etching process is reduced by using optimized etching parameters. Whispering gallery modes of the fabricated microdisk resonators have been investigated by tapered fiber coupling and show quality factors as high as 10 6.","lang":"eng"}]},{"project":[{"grant_number":"231447078","_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area B","_id":"55"},{"grant_number":"231447078","_id":"68","name":"TRR 142 - Subproject B3"}],"_id":"3434","user_id":"14931","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"article_type":"original","language":[{"iso":"eng"}],"type":"journal_article","publication":"OPTICS EXPRESS","abstract":[{"text":"In this work we study the impact of ion implantation on the nonlinear optical properties in MgO:LiNbO3 via confocal second-harmonic microscopy. In detail, we spatially characterize the nonlinear susceptibility in carbon-ion implanted lithium niobate planar waveguides for different implantation energies and fluences, as well as the effect of annealing. In a further step, a computational simulation is used to calculate the implantation range of carbon-ions and the corresponding defect density distribution. A comparison between the simulation and the experimental data indicates that the depth profile of the second-order effective nonlinear coefficient is directly connected to the defect density that is induced by the ion irradiation. Furthermore it can be demonstrated that the annealing treatment partially recovers the second-order optical susceptibility.","lang":"eng"}],"status":"public","date_updated":"2023-10-09T08:10:58Z","author":[{"full_name":"Spychala, Kai J.","last_name":"Spychala","first_name":"Kai J."},{"first_name":"Gerhard","id":"53","full_name":"Berth, Gerhard","last_name":"Berth"},{"first_name":"Alex","last_name":"Widhalm","full_name":"Widhalm, Alex"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"full_name":"Wang, Lei","last_name":"Wang","first_name":"Lei"},{"last_name":"Sanna","full_name":"Sanna, Simone","first_name":"Simone"},{"first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606"}],"date_created":"2018-07-05T11:53:46Z","title":"Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO3","doi":"10.1364/OE.25.021444","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"issue":"18","year":"2017","citation":{"ama":"Spychala KJ, Berth G, Widhalm A, et al. Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO3. OPTICS EXPRESS. 2017;(18):21444--21453. doi:10.1364/OE.25.021444","chicago":"Spychala, Kai J., Gerhard Berth, Alex Widhalm, Michael Rüsing, Lei Wang, Simone Sanna, and Artur Zrenner. “Impact of Carbon-Ion Implantation on the Nonlinear Optical Susceptibility of LiNbO3.” OPTICS EXPRESS, no. 18 (2017): 21444--21453. https://doi.org/10.1364/OE.25.021444.","ieee":"K. J. Spychala et al., “Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO3,” OPTICS EXPRESS, no. 18, pp. 21444--21453, 2017, doi: 10.1364/OE.25.021444.","mla":"Spychala, Kai J., et al. “Impact of Carbon-Ion Implantation on the Nonlinear Optical Susceptibility of LiNbO3.” OPTICS EXPRESS, no. 18, 2017, pp. 21444--21453, doi:10.1364/OE.25.021444.","short":"K.J. Spychala, G. Berth, A. Widhalm, M. Rüsing, L. Wang, S. Sanna, A. Zrenner, OPTICS EXPRESS (2017) 21444--21453.","bibtex":"@article{Spychala_Berth_Widhalm_Rüsing_Wang_Sanna_Zrenner_2017, title={Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO3}, DOI={10.1364/OE.25.021444}, number={18}, journal={OPTICS EXPRESS}, author={Spychala, Kai J. and Berth, Gerhard and Widhalm, Alex and Rüsing, Michael and Wang, Lei and Sanna, Simone and Zrenner, Artur}, year={2017}, pages={21444--21453} }","apa":"Spychala, K. J., Berth, G., Widhalm, A., Rüsing, M., Wang, L., Sanna, S., & Zrenner, A. (2017). Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO3. OPTICS EXPRESS, 18, 21444--21453. https://doi.org/10.1364/OE.25.021444"},"page":"21444--21453"},{"publication_status":"published","publication_identifier":{"issn":["1098-0121"]},"issue":"24","year":"2017","citation":{"bibtex":"@article{Heinze_Zrenner_Schumacher_2017, title={Polarization-entangled twin photons from two-photon quantum-dot emission}, DOI={10.1103/PhysRevB.95.245306}, number={24}, journal={Physical Review B}, author={Heinze, Dirk and Zrenner, Artur and Schumacher, Stefan}, year={2017} }","short":"D. Heinze, A. Zrenner, S. Schumacher, Physical Review B (2017).","mla":"Heinze, Dirk, et al. “Polarization-Entangled Twin Photons from Two-Photon Quantum-Dot Emission.” Physical Review B, no. 24, 2017, doi:10.1103/PhysRevB.95.245306.","apa":"Heinze, D., Zrenner, A., & Schumacher, S. (2017). Polarization-entangled twin photons from two-photon quantum-dot emission. Physical Review B, 24. https://doi.org/10.1103/PhysRevB.95.245306","ama":"Heinze D, Zrenner A, Schumacher S. Polarization-entangled twin photons from two-photon quantum-dot emission. Physical Review B. 2017;(24). doi:10.1103/PhysRevB.95.245306","ieee":"D. Heinze, A. Zrenner, and S. Schumacher, “Polarization-entangled twin photons from two-photon quantum-dot emission,” Physical Review B, no. 24, 2017, doi: 10.1103/PhysRevB.95.245306.","chicago":"Heinze, Dirk, Artur Zrenner, and Stefan Schumacher. “Polarization-Entangled Twin Photons from Two-Photon Quantum-Dot Emission.” Physical Review B, no. 24 (2017). https://doi.org/10.1103/PhysRevB.95.245306."},"date_updated":"2025-12-05T14:35:08Z","date_created":"2018-07-05T12:08:38Z","author":[{"first_name":"Dirk","full_name":"Heinze, Dirk","last_name":"Heinze"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"first_name":"Stefan","id":"27271","full_name":"Schumacher, Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951"}],"title":"Polarization-entangled twin photons from two-photon quantum-dot emission","doi":"10.1103/PhysRevB.95.245306","type":"journal_article","publication":"Physical Review B","abstract":[{"text":"Semiconductor quantum dots are promising sources for polarization-entangled photons. As an alternative\r\nto the usual cascaded biexciton-exciton emission, direct two-photon emission from the biexciton can be used.\r\nWith a high-quality optical resonator tuned to half the biexciton energy, a large proportion of the photons\r\ncan be steered into the two-photon emission channel. In this case the degree of polarization entanglement is\r\ninherently insensitive to the exciton fine-structure splitting. In the present work we analyze the biexciton emission\r\nwith particular emphasis on the influence of coupling of the quantum-dot cavity system to its environment.\r\nEspecially for a high-quality cavity, the coupling to the surrounding semiconductormaterial can open up additional\r\nphonon-assisted decay channels. Our analysis demonstrates that with the cavity tuned to half the biexciton energy,\r\nthe potentially detrimental influence of the phonons on the polarization entanglement is strongly suppressed—high\r\ndegrees of entanglement can still be achieved. We further discuss spectral properties and statistics of the emitted\r\ntwin photons.","lang":"eng"}],"status":"public","project":[{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"60","name":"TRR 142 - Subproject A3"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"_id":"3435","user_id":"16199","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"170"},{"_id":"297"},{"_id":"429"}],"article_type":"original","language":[{"iso":"eng"}]}]