[{"language":[{"iso":"eng"}],"publication":"Physical Review A","publisher":"American Physical Society (APS)","date_created":"2025-09-12T10:37:34Z","title":"Entanglement between dependent degrees of freedom: Quasiparticle correlations","issue":"3","year":"2025","_id":"61245","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"61","name":"TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"623"},{"_id":"429"}],"user_id":"16199","article_number":"032404","type":"journal_article","status":"public","date_updated":"2025-09-12T10:42:16Z","volume":111,"author":[{"full_name":"Barkhausen, Franziska","id":"63631","last_name":"Barkhausen","first_name":"Franziska"},{"full_name":"Ares Santos, Laura","last_name":"Ares Santos","first_name":"Laura"},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"},{"first_name":"Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","id":"75127","full_name":"Sperling, Jan"}],"doi":"10.1103/physreva.111.032404","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","intvolume":"       111","citation":{"ieee":"F. Barkhausen, L. Ares Santos, S. Schumacher, and J. Sperling, “Entanglement between dependent degrees of freedom: Quasiparticle correlations,” <i>Physical Review A</i>, vol. 111, no. 3, Art. no. 032404, 2025, doi: <a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>.","chicago":"Barkhausen, Franziska, Laura Ares Santos, Stefan Schumacher, and Jan Sperling. “Entanglement between Dependent Degrees of Freedom: Quasiparticle Correlations.” <i>Physical Review A</i> 111, no. 3 (2025). <a href=\"https://doi.org/10.1103/physreva.111.032404\">https://doi.org/10.1103/physreva.111.032404</a>.","ama":"Barkhausen F, Ares Santos L, Schumacher S, Sperling J. Entanglement between dependent degrees of freedom: Quasiparticle correlations. <i>Physical Review A</i>. 2025;111(3). doi:<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>","short":"F. Barkhausen, L. Ares Santos, S. Schumacher, J. Sperling, Physical Review A 111 (2025).","bibtex":"@article{Barkhausen_Ares Santos_Schumacher_Sperling_2025, title={Entanglement between dependent degrees of freedom: Quasiparticle correlations}, volume={111}, DOI={<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>}, number={3032404}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Barkhausen, Franziska and Ares Santos, Laura and Schumacher, Stefan and Sperling, Jan}, year={2025} }","mla":"Barkhausen, Franziska, et al. “Entanglement between Dependent Degrees of Freedom: Quasiparticle Correlations.” <i>Physical Review A</i>, vol. 111, no. 3, 032404, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/physreva.111.032404\">10.1103/physreva.111.032404</a>.","apa":"Barkhausen, F., Ares Santos, L., Schumacher, S., &#38; Sperling, J. (2025). Entanglement between dependent degrees of freedom: Quasiparticle correlations. <i>Physical Review A</i>, <i>111</i>(3), Article 032404. <a href=\"https://doi.org/10.1103/physreva.111.032404\">https://doi.org/10.1103/physreva.111.032404</a>"}},{"title":"Tuning polariton vortices in an asymmetric ring potential","doi":"10.1063/5.0287076","date_updated":"2025-12-04T12:27:02Z","publisher":"AIP Publishing","volume":127,"author":[{"full_name":"Ai, Qiang","last_name":"Ai","first_name":"Qiang"},{"last_name":"Ma","id":"59416","full_name":"Ma, Xuekai","first_name":"Xuekai"},{"last_name":"Barkhausen","id":"63631","full_name":"Barkhausen, Franziska","first_name":"Franziska"},{"first_name":"Xiaokun","full_name":"Zhai, Xiaokun","last_name":"Zhai"},{"first_name":"Chunzi","last_name":"Xing","full_name":"Xing, Chunzi"},{"last_name":"Yang","full_name":"Yang, Xinmiao","first_name":"Xinmiao"},{"first_name":"Peilin","last_name":"Wang","full_name":"Wang, Peilin"},{"last_name":"Liu","full_name":"Liu, Tianyu","first_name":"Tianyu"},{"full_name":"Zhang, Yong","last_name":"Zhang","first_name":"Yong"},{"first_name":"Yazhou","last_name":"Gu","full_name":"Gu, Yazhou"},{"full_name":"Li, Peigang","last_name":"Li","first_name":"Peigang"},{"first_name":"Zhitong","last_name":"Li","full_name":"Li, Zhitong"},{"full_name":"Hatzopoulos, Zacharias","last_name":"Hatzopoulos","first_name":"Zacharias"},{"first_name":"Pavlos G.","last_name":"Savvidis","full_name":"Savvidis, Pavlos G."},{"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":"2025-12-04T12:25:12Z","year":"2025","intvolume":"       127","citation":{"apa":"Ai, Q., Ma, X., Barkhausen, F., Zhai, X., Xing, C., Yang, X., Wang, P., Liu, T., Zhang, Y., Gu, Y., Li, P., Li, Z., Hatzopoulos, Z., Savvidis, P. G., Schumacher, S., &#38; Gao, T. (2025). Tuning polariton vortices in an asymmetric ring potential. <i>Applied Physics Letters</i>, <i>127</i>(12), Article 121103. <a href=\"https://doi.org/10.1063/5.0287076\">https://doi.org/10.1063/5.0287076</a>","short":"Q. Ai, X. Ma, F. Barkhausen, X. Zhai, C. Xing, X. Yang, P. Wang, T. Liu, Y. Zhang, Y. Gu, P. Li, Z. Li, Z. Hatzopoulos, P.G. Savvidis, S. Schumacher, T. Gao, Applied Physics Letters 127 (2025).","mla":"Ai, Qiang, et al. “Tuning Polariton Vortices in an Asymmetric Ring Potential.” <i>Applied Physics Letters</i>, vol. 127, no. 12, 121103, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0287076\">10.1063/5.0287076</a>.","bibtex":"@article{Ai_Ma_Barkhausen_Zhai_Xing_Yang_Wang_Liu_Zhang_Gu_et al._2025, title={Tuning polariton vortices in an asymmetric ring potential}, volume={127}, DOI={<a href=\"https://doi.org/10.1063/5.0287076\">10.1063/5.0287076</a>}, number={12121103}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Ai, Qiang and Ma, Xuekai and Barkhausen, Franziska and Zhai, Xiaokun and Xing, Chunzi and Yang, Xinmiao and Wang, Peilin and Liu, Tianyu and Zhang, Yong and Gu, Yazhou and et al.}, year={2025} }","ieee":"Q. Ai <i>et al.</i>, “Tuning polariton vortices in an asymmetric ring potential,” <i>Applied Physics Letters</i>, vol. 127, no. 12, Art. no. 121103, 2025, doi: <a href=\"https://doi.org/10.1063/5.0287076\">10.1063/5.0287076</a>.","chicago":"Ai, Qiang, Xuekai Ma, Franziska Barkhausen, Xiaokun Zhai, Chunzi Xing, Xinmiao Yang, Peilin Wang, et al. “Tuning Polariton Vortices in an Asymmetric Ring Potential.” <i>Applied Physics Letters</i> 127, no. 12 (2025). <a href=\"https://doi.org/10.1063/5.0287076\">https://doi.org/10.1063/5.0287076</a>.","ama":"Ai Q, Ma X, Barkhausen F, et al. Tuning polariton vortices in an asymmetric ring potential. <i>Applied Physics Letters</i>. 2025;127(12). doi:<a href=\"https://doi.org/10.1063/5.0287076\">10.1063/5.0287076</a>"},"publication_identifier":{"issn":["0003-6951","1077-3118"]},"publication_status":"published","issue":"12","article_number":"121103","language":[{"iso":"eng"}],"_id":"62862","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","abstract":[{"lang":"eng","text":"<jats:p>Exciton polariton condensates are macroscopic coherent states in which topological excitations can be observed. In this work, we observe the excitation of the vortices and realize tuning the topological charge by manipulating the pumping configurations. Using a digital micromirror device, we constructed an annular pumping pattern where the inner and outer rings can be easily tuned. Both the number and the topological charge of the vortices can be changed by slightly tuning the inner ring position against the outer ring. The experimental results can be reproduced in theory by the Gross–Pitaevskii equation. Our work offers to generate and manipulate vortices in exciton polariton condensates using a straightforward optical method.</jats:p>"}],"status":"public","publication":"Applied Physics Letters","type":"journal_article"},{"publication":"Physical Review Letters","type":"journal_article","status":"public","_id":"42973","project":[{"_id":"53","name":"TRR 142: TRR 142"},{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - C10: TRR 142 - Subproject C10","_id":"174"},{"_id":"173","name":"TRR 142 - C09: TRR 142 - Subproject C09"}],"department":[{"_id":"623"},{"_id":"15"},{"_id":"170"},{"_id":"706"},{"_id":"429"},{"_id":"230"},{"_id":"35"},{"_id":"297"}],"user_id":"16199","keyword":["General Physics and Astronomy"],"article_number":"113601","article_type":"letter_note","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0031-9007","1079-7114"]},"publication_status":"published","issue":"11","year":"2023","intvolume":"       130","citation":{"apa":"Lüders, C., Pukrop, M., Barkhausen, F., Rozas, E., Schneider, C., Höfling, S., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2023). Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography. <i>Physical Review Letters</i>, <i>130</i>(11), Article 113601. <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">https://doi.org/10.1103/physrevlett.130.113601</a>","mla":"Lüders, Carolin, et al. “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography.” <i>Physical Review Letters</i>, vol. 130, no. 11, 113601, American Physical Society (APS), 2023, doi:<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>.","bibtex":"@article{Lüders_Pukrop_Barkhausen_Rozas_Schneider_Höfling_Sperling_Schumacher_Aßmann_2023, title={Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography}, volume={130}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>}, number={11113601}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Lüders, Carolin and Pukrop, Matthias and Barkhausen, Franziska and Rozas, Elena and Schneider, Christian and Höfling, Sven and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2023} }","short":"C. Lüders, M. Pukrop, F. Barkhausen, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, Physical Review Letters 130 (2023).","ama":"Lüders C, Pukrop M, Barkhausen F, et al. Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography. <i>Physical Review Letters</i>. 2023;130(11). doi:<a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>","chicago":"Lüders, Carolin, Matthias Pukrop, Franziska Barkhausen, Elena Rozas, Christian Schneider, Sven Höfling, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography.” <i>Physical Review Letters</i> 130, no. 11 (2023). <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">https://doi.org/10.1103/physrevlett.130.113601</a>.","ieee":"C. Lüders <i>et al.</i>, “Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography,” <i>Physical Review Letters</i>, vol. 130, no. 11, Art. no. 113601, 2023, doi: <a href=\"https://doi.org/10.1103/physrevlett.130.113601\">10.1103/physrevlett.130.113601</a>."},"date_updated":"2023-04-20T15:28:42Z","publisher":"American Physical Society (APS)","volume":130,"date_created":"2023-03-14T07:50:56Z","author":[{"first_name":"Carolin","full_name":"Lüders, Carolin","last_name":"Lüders"},{"full_name":"Pukrop, Matthias","id":"64535","last_name":"Pukrop","first_name":"Matthias"},{"full_name":"Barkhausen, Franziska","id":"63631","last_name":"Barkhausen","first_name":"Franziska"},{"last_name":"Rozas","full_name":"Rozas, Elena","first_name":"Elena"},{"last_name":"Schneider","full_name":"Schneider, Christian","first_name":"Christian"},{"full_name":"Höfling, Sven","last_name":"Höfling","first_name":"Sven"},{"first_name":"Jan","orcid":"0000-0002-5844-3205","last_name":"Sperling","full_name":"Sperling, Jan","id":"75127"},{"full_name":"Schumacher, Stefan","id":"27271","orcid":"0000-0003-4042-4951","last_name":"Schumacher","first_name":"Stefan"},{"last_name":"Aßmann","full_name":"Aßmann, Marc","first_name":"Marc"}],"title":"Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography","doi":"10.1103/physrevlett.130.113601"},{"language":[{"iso":"eng"}],"article_number":"2997","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"623"}],"user_id":"16199","_id":"61266","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"status":"public","abstract":[{"lang":"eng","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>"}],"publication":"Optical Materials Express","type":"journal_article","doi":"10.1364/ome.497006","title":"Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]","volume":13,"author":[{"last_name":"Lüders","full_name":"Lüders, Carolin","first_name":"Carolin"},{"last_name":"Barkhausen","id":"63631","full_name":"Barkhausen, Franziska","first_name":"Franziska"},{"last_name":"Pukrop","full_name":"Pukrop, Matthias","first_name":"Matthias"},{"first_name":"Elena","full_name":"Rozas, Elena","last_name":"Rozas"},{"first_name":"Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","id":"75127"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271","first_name":"Stefan"},{"last_name":"Aßmann","full_name":"Aßmann, Marc","first_name":"Marc"}],"date_created":"2025-09-12T11:40:26Z","publisher":"Optica Publishing Group","date_updated":"2025-09-12T11:41:42Z","intvolume":"        13","citation":{"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>.","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>","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>","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} }","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>.","short":"C. Lüders, F. Barkhausen, M. Pukrop, E. Rozas, J. Sperling, S. Schumacher, M. Aßmann, Optical Materials Express 13 (2023)."},"year":"2023","issue":"11","publication_identifier":{"issn":["2159-3930"]},"publication_status":"published"}]