[{"status":"public","publisher":"Optica Publishing Group","_id":"34235","user_id":"13256","volume":30,"citation":{"chicago":"Misra, Arijit, Christian Kress, Karanveer Singh, Janosch Meier, Tobias Schwabe, Stefan Preussler, J. Christoph Scheytt, and Thomas Schneider. “Reconfigurable and Real-Time High-Bandwidth Nyquist Signal Detection with Low-Bandwidth in Silicon Photonics.” <i>Optics Express</i> 30, no. 8 (2022). <a href=\"https://doi.org/10.1364/oe.454163\">https://doi.org/10.1364/oe.454163</a>.","ama":"Misra A, Kress C, Singh K, et al. Reconfigurable and real-time high-bandwidth Nyquist signal detection with low-bandwidth in silicon photonics. <i>Optics Express</i>. 2022;30(8). doi:<a href=\"https://doi.org/10.1364/oe.454163\">10.1364/oe.454163</a>","short":"A. Misra, C. Kress, K. Singh, J. Meier, T. Schwabe, S. Preussler, J.C. Scheytt, T. Schneider, Optics Express 30 (2022).","bibtex":"@article{Misra_Kress_Singh_Meier_Schwabe_Preussler_Scheytt_Schneider_2022, title={Reconfigurable and real-time high-bandwidth Nyquist signal detection with low-bandwidth in silicon photonics}, volume={30}, DOI={<a href=\"https://doi.org/10.1364/oe.454163\">10.1364/oe.454163</a>}, number={813776}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Misra, Arijit and Kress, Christian and Singh, Karanveer and Meier, Janosch and Schwabe, Tobias and Preussler, Stefan and Scheytt, J. Christoph and Schneider, Thomas}, year={2022} }","apa":"Misra, A., Kress, C., Singh, K., Meier, J., Schwabe, T., Preussler, S., Scheytt, J. C., &#38; Schneider, T. (2022). Reconfigurable and real-time high-bandwidth Nyquist signal detection with low-bandwidth in silicon photonics. <i>Optics Express</i>, <i>30</i>(8), Article 13776. <a href=\"https://doi.org/10.1364/oe.454163\">https://doi.org/10.1364/oe.454163</a>","mla":"Misra, Arijit, et al. “Reconfigurable and Real-Time High-Bandwidth Nyquist Signal Detection with Low-Bandwidth in Silicon Photonics.” <i>Optics Express</i>, vol. 30, no. 8, 13776, Optica Publishing Group, 2022, doi:<a href=\"https://doi.org/10.1364/oe.454163\">10.1364/oe.454163</a>.","ieee":"A. Misra <i>et al.</i>, “Reconfigurable and real-time high-bandwidth Nyquist signal detection with low-bandwidth in silicon photonics,” <i>Optics Express</i>, vol. 30, no. 8, Art. no. 13776, 2022, doi: <a href=\"https://doi.org/10.1364/oe.454163\">10.1364/oe.454163</a>."},"project":[{"grant_number":"403154102","_id":"302","name":"PONyDAC: SPP 2111 - PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC"},{"name":"NyPhE: NyPhE - Nyquist Silicon Photonics Engine","grant_number":"13N14882","_id":"299"}],"year":"2022","title":"Reconfigurable and real-time high-bandwidth Nyquist signal detection with low-bandwidth in silicon photonics","publication_identifier":{"issn":["1094-4087"]},"author":[{"full_name":"Misra, Arijit","first_name":"Arijit","last_name":"Misra"},{"last_name":"Kress","orcid":"0000-0002-4403-2237","first_name":"Christian","full_name":"Kress, Christian","id":"13256"},{"last_name":"Singh","first_name":"Karanveer","full_name":"Singh, Karanveer"},{"last_name":"Meier","first_name":"Janosch","full_name":"Meier, Janosch"},{"id":"39217","full_name":"Schwabe, Tobias","first_name":"Tobias","last_name":"Schwabe"},{"full_name":"Preussler, Stefan","last_name":"Preussler","first_name":"Stefan"},{"id":"37144","full_name":"Scheytt, J. Christoph","last_name":"Scheytt","first_name":"J. Christoph","orcid":"https://orcid.org/0000-0002-5950-6618"},{"first_name":"Thomas","last_name":"Schneider","full_name":"Schneider, Thomas"}],"date_updated":"2025-07-02T12:19:40Z","publication_status":"published","intvolume":"        30","article_number":"13776","language":[{"iso":"eng"}],"doi":"10.1364/oe.454163","issue":"8","publication":"Optics Express","abstract":[{"text":"<jats:p>We demonstrate for the first time, to the best of our knowledge, reconfigurable and real-time orthogonal time-domain detection of a high-bandwidth Nyquist signal with a low-bandwidth silicon photonics Mach-Zehnder modulator based receiver. As the Nyquist signal has a rectangular bandwidth, it can be multiplexed in the wavelength domain without any guardband as a part of a Nyquist-WDM superchannel. These superchannels can be additionally multiplexed in space and polarization. Thus, the presented demonstration can open a new possibility for the detection of multidimensional parallel data signals with silicon photonics. No external pulse source is needed for the receiver, and frequency-time coherence is used to sample the incoming Nyquist signal with orthogonal sinc-shaped Nyquist pulse sequences. All parameters are completely tunable in the electrical domain. The feasibility of the scheme is demonstrated through a proof-of-concept experiment over the entire C-band (1530 nm–1560 nm), employing a 24 Gbaud Nyquist QPSK signal due to experimental constraints on the transmitter side electronics. However, the silicon Mach-Zehnder modulator with a 3-dB bandwidth of only 16 GHz can process Nyquist signals of 90 GHz optical bandwidth, suggesting a possibility to detect symbol rates up to 90 GBd in an integrated Nyquist receiver.</jats:p>","lang":"eng"}],"date_created":"2022-12-06T10:59:03Z","type":"journal_article","department":[{"_id":"58"},{"_id":"230"}]},{"_id":"34236","publisher":"Optica Publishing Group","language":[{"iso":"eng"}],"user_id":"13256","doi":"10.1364/cleo_si.2022.sth5m.2","year":"2022","title":"Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics","status":"public","author":[{"first_name":"Arijit","last_name":"Misra","full_name":"Misra, Arijit"},{"full_name":"Singh, Karanveer","last_name":"Singh","first_name":"Karanveer"},{"full_name":"Meier, Janosch","first_name":"Janosch","last_name":"Meier"},{"full_name":"Kress, Christian","last_name":"Kress","orcid":"0000-0002-4403-2237","first_name":"Christian","id":"13256"},{"full_name":"Schwabe, Tobias","last_name":"Schwabe","first_name":"Tobias","id":"39217"},{"full_name":"Preussler, Stefan","first_name":"Stefan","last_name":"Preussler"},{"first_name":"J. Christoph","orcid":"https://orcid.org/0000-0002-5950-6618","last_name":"Scheytt","full_name":"Scheytt, J. Christoph","id":"37144"},{"last_name":"Schneider","first_name":"Thomas","full_name":"Schneider, Thomas"}],"publication_status":"published","date_updated":"2025-07-02T12:20:13Z","date_created":"2022-12-06T11:00:27Z","type":"conference","department":[{"_id":"58"},{"_id":"230"}],"publication":"Conference on Lasers and Electro-Optics","citation":{"apa":"Misra, A., Singh, K., Meier, J., Kress, C., Schwabe, T., Preussler, S., Scheytt, J. C., &#38; Schneider, T. (2022). Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics. <i>Conference on Lasers and Electro-Optics</i>. <a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">https://doi.org/10.1364/cleo_si.2022.sth5m.2</a>","ieee":"A. Misra <i>et al.</i>, “Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics,” 2022, doi: <a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">10.1364/cleo_si.2022.sth5m.2</a>.","short":"A. Misra, K. Singh, J. Meier, C. Kress, T. Schwabe, S. Preussler, J.C. Scheytt, T. Schneider, in: Conference on Lasers and Electro-Optics, Optica Publishing Group, 2022.","chicago":"Misra, Arijit, Karanveer Singh, Janosch Meier, Christian Kress, Tobias Schwabe, Stefan Preussler, J. Christoph Scheytt, and Thomas Schneider. “Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics.” In <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group, 2022. <a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">https://doi.org/10.1364/cleo_si.2022.sth5m.2</a>.","mla":"Misra, Arijit, et al. “Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics.” <i>Conference on Lasers and Electro-Optics</i>, Optica Publishing Group, 2022, doi:<a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">10.1364/cleo_si.2022.sth5m.2</a>.","ama":"Misra A, Singh K, Meier J, et al. Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics. In: <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group; 2022. doi:<a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">10.1364/cleo_si.2022.sth5m.2</a>","bibtex":"@inproceedings{Misra_Singh_Meier_Kress_Schwabe_Preussler_Scheytt_Schneider_2022, title={Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics}, DOI={<a href=\"https://doi.org/10.1364/cleo_si.2022.sth5m.2\">10.1364/cleo_si.2022.sth5m.2</a>}, booktitle={Conference on Lasers and Electro-Optics}, publisher={Optica Publishing Group}, author={Misra, Arijit and Singh, Karanveer and Meier, Janosch and Kress, Christian and Schwabe, Tobias and Preussler, Stefan and Scheytt, J. Christoph and Schneider, Thomas}, year={2022} }"},"abstract":[{"text":"<jats:p>We report for the first time, inter-symbol-interference (ISI) free demultiplexing of Nyquist optical time division multiplexed (OTDM) signals using a reconfigurable orthogonal sinc-pulse sampling enabled by silicon photonic Mach-Zehnder Modulators.</jats:p>","lang":"eng"}],"project":[{"name":"PONyDAC: SPP 2111 - PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC","_id":"302","grant_number":"403154102"}]},{"page":"16719-16728","funded_apc":"1","_id":"25605","user_id":"30525","volume":15,"status":"public","oa":"1","citation":{"short":"F. Spreyer, C. Ruppert, P. Georgi, T. Zentgraf, ACS Nano 15 (2021) 16719–16728.","chicago":"Spreyer, Florian, Claudia Ruppert, Philip Georgi, and Thomas Zentgraf. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i> 15, no. 10 (2021): 16719–28. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>.","ieee":"F. Spreyer, C. Ruppert, P. Georgi, and T. Zentgraf, “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces,” <i>ACS Nano</i>, vol. 15, no. 10, pp. 16719–16728, 2021, doi: <a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>.","apa":"Spreyer, F., Ruppert, C., Georgi, P., &#38; Zentgraf, T. (2021). Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>, <i>15</i>(10), 16719–16728. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>","bibtex":"@article{Spreyer_Ruppert_Georgi_Zentgraf_2021, title={Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces}, volume={15}, DOI={<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>}, number={10}, journal={ACS Nano}, author={Spreyer, Florian and Ruppert, Claudia and Georgi, Philip and Zentgraf, Thomas}, year={2021}, pages={16719–16728} }","ama":"Spreyer F, Ruppert C, Georgi P, Zentgraf T. Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>. 2021;15(10):16719-16728. doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>","mla":"Spreyer, Florian, et al. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i>, vol. 15, no. 10, 2021, pp. 16719–28, doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>."},"quality_controlled":"1","project":[{"_id":"53","name":"TRR 142"},{"_id":"54","name":"TRR 142 - Project Area A"},{"name":"TRR 142 - Subproject A7","_id":"64"},{"name":"TRR 142 - Subproject A8","_id":"65"}],"main_file_link":[{"open_access":"1","url":"https://pubs.acs.org/doi/10.1021/acsnano.1c06693"}],"language":[{"iso":"eng"}],"doi":"10.1021/acsnano.1c06693","year":"2021","title":"Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces","author":[{"full_name":"Spreyer, Florian","last_name":"Spreyer","first_name":"Florian"},{"full_name":"Ruppert, Claudia","first_name":"Claudia","last_name":"Ruppert"},{"first_name":"Philip","last_name":"Georgi","full_name":"Georgi, Philip"},{"full_name":"Zentgraf, Thomas","first_name":"Thomas","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","id":"30525"}],"publication_identifier":{"issn":["1936-0851","1936-086X"]},"publication_status":"published","date_updated":"2022-01-06T06:57:07Z","article_type":"original","intvolume":"        15","date_created":"2021-10-07T07:39:27Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"issue":"10","publication":"ACS Nano","abstract":[{"text":"The nonlinear process of second harmonic generation (SHG) in monolayer (1L) transition metal dichalcogenides (TMD), like WS2, strongly depends on the polarization state of the excitation light. By combination of plasmonic nanostructures with 1L-WS2 by transferring it onto a plasmonic nanoantenna array, a hybrid metasurface is realized impacting the polarization dependency of its SHG. Here, we investigate how plasmonic dipole resonances affect the process of SHG in plasmonic–TMD hybrid metasurfaces by nonlinear spectroscopy. We show that the polarization dependency is affected by the lattice structure of plasmonic nanoantenna arrays as well as by the relative orientation between the 1L-WS2 and the individual plasmonic nanoantennas. In addition, such hybrid metasurfaces show SHG in polarization states, where SHG is usually forbidden for either 1L-WS2 or plasmonic nanoantennas. By comparing the SHG in these channels with the SHG generated by the hybrid metasurface components, we detect an enhancement of the SHG signal by a factor of more than 40. Meanwhile, an attenuation of the SHG signal in usually allowed polarization states is observed. Our study provides valuable insight into hybrid systems where symmetries strongly affect the SHG and enable tailored SHG in 1L-WS2 for future applications.","lang":"eng"}]},{"status":"public","volume":7,"user_id":"30525","_id":"21631","quality_controlled":"1","citation":{"mla":"Georgi, Philip, et al. “Optical Secret Sharing with Cascaded Metasurface Holography.” <i>Science Advances</i>, vol. 7, no. 16, eabf9718, 2021, doi:<a href=\"https://doi.org/10.1126/sciadv.abf9718\">10.1126/sciadv.abf9718</a>.","bibtex":"@article{Georgi_Wei_Sain_Schlickriede_Wang_Huang_Zentgraf_2021, title={Optical secret sharing with cascaded metasurface holography}, volume={7}, DOI={<a href=\"https://doi.org/10.1126/sciadv.abf9718\">10.1126/sciadv.abf9718</a>}, number={16eabf9718}, journal={Science Advances}, author={Georgi, Philip and Wei, Qunshuo and Sain, Basudeb and Schlickriede, Christian and Wang, Yongtian and Huang, Lingling and Zentgraf, Thomas}, year={2021} }","ama":"Georgi P, Wei Q, Sain B, et al. Optical secret sharing with cascaded metasurface holography. <i>Science Advances</i>. 2021;7(16). doi:<a href=\"https://doi.org/10.1126/sciadv.abf9718\">10.1126/sciadv.abf9718</a>","ieee":"P. Georgi <i>et al.</i>, “Optical secret sharing with cascaded metasurface holography,” <i>Science Advances</i>, vol. 7, no. 16, 2021.","apa":"Georgi, P., Wei, Q., Sain, B., Schlickriede, C., Wang, Y., Huang, L., &#38; Zentgraf, T. (2021). Optical secret sharing with cascaded metasurface holography. <i>Science Advances</i>, <i>7</i>(16). <a href=\"https://doi.org/10.1126/sciadv.abf9718\">https://doi.org/10.1126/sciadv.abf9718</a>","short":"P. Georgi, Q. Wei, B. Sain, C. Schlickriede, Y. Wang, L. Huang, T. Zentgraf, Science Advances 7 (2021).","chicago":"Georgi, Philip, Qunshuo Wei, Basudeb Sain, Christian Schlickriede, Yongtian Wang, Lingling Huang, and Thomas Zentgraf. “Optical Secret Sharing with Cascaded Metasurface Holography.” <i>Science Advances</i> 7, no. 16 (2021). <a href=\"https://doi.org/10.1126/sciadv.abf9718\">https://doi.org/10.1126/sciadv.abf9718</a>."},"oa":"1","article_type":"original","intvolume":"         7","publication_status":"published","date_updated":"2022-01-06T06:55:08Z","publication_identifier":{"issn":["2375-2548"]},"author":[{"last_name":"Georgi","first_name":"Philip","full_name":"Georgi, Philip"},{"first_name":"Qunshuo","last_name":"Wei","full_name":"Wei, Qunshuo"},{"full_name":"Sain, Basudeb","first_name":"Basudeb","last_name":"Sain"},{"first_name":"Christian","last_name":"Schlickriede","full_name":"Schlickriede, Christian","id":"59792"},{"full_name":"Wang, Yongtian","last_name":"Wang","first_name":"Yongtian"},{"first_name":"Lingling","last_name":"Huang","full_name":"Huang, Lingling"},{"first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","full_name":"Zentgraf, Thomas","id":"30525"}],"title":"Optical secret sharing with cascaded metasurface holography","year":"2021","doi":"10.1126/sciadv.abf9718","language":[{"iso":"eng"}],"article_number":"eabf9718","main_file_link":[{"open_access":"1","url":"https://advances.sciencemag.org/content/7/16/eabf9718"}],"abstract":[{"lang":"eng","text":"<jats:p>Secret sharing is a well-established cryptographic primitive for storing highly sensitive information like encryption keys for encoded data. It describes the problem of splitting a secret into different shares, without revealing any information to its shareholders. Here, we demonstrate an all-optical solution for secret sharing based on metasurface holography. In our concept, metasurface holograms are used as spatially separable shares that carry encrypted messages in the form of holographic images. Two of these shares can be recombined by bringing them close together. Light passing through this stack of metasurfaces accumulates the phase shift of both holograms and optically reconstructs the secret with high fidelity. In addition, the hologram generated by each single metasurface can uniquely identify its shareholder. Furthermore, we demonstrate that the inherent translational alignment sensitivity between two stacked metasurface holograms can be used for spatial multiplexing, which can be further extended to realize optical rulers.</jats:p>"}],"issue":"16","publication":"Science Advances","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"type":"journal_article","date_created":"2021-04-16T08:08:49Z"},{"publication_status":"published","date_updated":"2022-01-06T06:56:01Z","publication_identifier":{"issn":["0022-3727","1361-6463"]},"author":[{"full_name":"Baron, Elias","first_name":"Elias","last_name":"Baron"},{"full_name":"Feneberg, Martin","last_name":"Feneberg","first_name":"Martin"},{"full_name":"Goldhahn, Rüdiger","first_name":"Rüdiger","last_name":"Goldhahn"},{"last_name":"Deppe","first_name":"Michael","full_name":"Deppe, Michael"},{"full_name":"Tacken, Fabian","last_name":"Tacken","first_name":"Fabian"},{"last_name":"As","first_name":"Donat Josef","orcid":"0000-0003-1121-3565","full_name":"As, Donat Josef","id":"14"}],"year":"2021","status":"public","title":"Optical evidence of many-body effects in the zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-x}$N alloy system","user_id":"14","doi":"10.1088/1361-6463/abb97a","language":[{"iso":"eng"}],"_id":"23842","article_number":"025101","citation":{"mla":"Baron, Elias, et al. “Optical Evidence of Many-Body Effects in the Zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-X}$N Alloy System.” <i>Journal of Physics D: Applied Physics</i>, 025101, 2021, doi:<a href=\"https://doi.org/10.1088/1361-6463/abb97a\">10.1088/1361-6463/abb97a</a>.","bibtex":"@article{Baron_Feneberg_Goldhahn_Deppe_Tacken_As_2021, title={Optical evidence of many-body effects in the zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-x}$N alloy system}, DOI={<a href=\"https://doi.org/10.1088/1361-6463/abb97a\">10.1088/1361-6463/abb97a</a>}, number={025101}, journal={Journal of Physics D: Applied Physics}, author={Baron, Elias and Feneberg, Martin and Goldhahn, Rüdiger and Deppe, Michael and Tacken, Fabian and As, Donat Josef}, year={2021} }","ama":"Baron E, Feneberg M, Goldhahn R, Deppe M, Tacken F, As DJ. Optical evidence of many-body effects in the zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-x}$N alloy system. <i>Journal of Physics D: Applied Physics</i>. 2021. doi:<a href=\"https://doi.org/10.1088/1361-6463/abb97a\">10.1088/1361-6463/abb97a</a>","ieee":"E. Baron, M. Feneberg, R. Goldhahn, M. Deppe, F. Tacken, and D. J. As, “Optical evidence of many-body effects in the zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-x}$N alloy system,” <i>Journal of Physics D: Applied Physics</i>, 2021.","apa":"Baron, E., Feneberg, M., Goldhahn, R., Deppe, M., Tacken, F., &#38; As, D. J. (2021). Optical evidence of many-body effects in the zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-x}$N alloy system. <i>Journal of Physics D: Applied Physics</i>. <a href=\"https://doi.org/10.1088/1361-6463/abb97a\">https://doi.org/10.1088/1361-6463/abb97a</a>","short":"E. Baron, M. Feneberg, R. Goldhahn, M. Deppe, F. Tacken, D.J. As, Journal of Physics D: Applied Physics (2021).","chicago":"Baron, Elias, Martin Feneberg, Rüdiger Goldhahn, Michael Deppe, Fabian Tacken, and Donat Josef As. “Optical Evidence of Many-Body Effects in the Zincblende Al$_\\mathrm{x}$Ga$_\\mathrm{1-X}$N Alloy System.” <i>Journal of Physics D: Applied Physics</i>, 2021. <a href=\"https://doi.org/10.1088/1361-6463/abb97a\">https://doi.org/10.1088/1361-6463/abb97a</a>."},"publication":"Journal of Physics D: Applied Physics","department":[{"_id":"230"},{"_id":"429"}],"type":"journal_article","date_created":"2021-09-07T09:19:46Z"},{"user_id":"30525","volume":218,"page":"2000408","_id":"20592","status":"public","oa":"1","project":[{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"name":"TRR 142 - Subproject A6","_id":"63"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - Subproject C5","_id":"75"}],"citation":{"mla":"Henksmeier, Tobias, et al. “Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off.” <i>Physica Status Solidi (A)</i>, vol. 218, no. 3, 2021, p. 2000408, doi:<a href=\"https://doi.org/10.1002/pssa.202000408\">https://doi.org/10.1002/pssa.202000408</a>.","ama":"Henksmeier T, Eppinger M, Reineke B, Zentgraf T, Meier C, Reuter D. Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off. <i>physica status solidi (a)</i>. 2021;218(3):2000408. doi:<a href=\"https://doi.org/10.1002/pssa.202000408\">https://doi.org/10.1002/pssa.202000408</a>","bibtex":"@article{Henksmeier_Eppinger_Reineke_Zentgraf_Meier_Reuter_2021, title={Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off}, volume={218}, DOI={<a href=\"https://doi.org/10.1002/pssa.202000408\">https://doi.org/10.1002/pssa.202000408</a>}, number={3}, journal={physica status solidi (a)}, author={Henksmeier, Tobias and Eppinger, Martin and Reineke, Bernhard and Zentgraf, Thomas and Meier, Cedrik and Reuter, Dirk}, year={2021}, pages={2000408} }","apa":"Henksmeier, T., Eppinger, M., Reineke, B., Zentgraf, T., Meier, C., &#38; Reuter, D. (2021). Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off. <i>Physica Status Solidi (A)</i>, <i>218</i>(3), 2000408. <a href=\"https://doi.org/10.1002/pssa.202000408\">https://doi.org/10.1002/pssa.202000408</a>","ieee":"T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, and D. Reuter, “Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off,” <i>physica status solidi (a)</i>, vol. 218, no. 3, p. 2000408, 2021.","chicago":"Henksmeier, Tobias, Martin Eppinger, Bernhard Reineke, Thomas Zentgraf, Cedrik Meier, and Dirk Reuter. “Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off.” <i>Physica Status Solidi (A)</i> 218, no. 3 (2021): 2000408. <a href=\"https://doi.org/10.1002/pssa.202000408\">https://doi.org/10.1002/pssa.202000408</a>.","short":"T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, D. Reuter, Physica Status Solidi (A) 218 (2021) 2000408."},"doi":"https://doi.org/10.1002/pssa.202000408","main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.202000408","open_access":"1"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2022-01-06T06:54:30Z","article_type":"original","intvolume":"       218","year":"2021","title":"Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off","author":[{"full_name":"Henksmeier, Tobias","last_name":"Henksmeier","first_name":"Tobias"},{"last_name":"Eppinger","first_name":"Martin","full_name":"Eppinger, Martin"},{"full_name":"Reineke, Bernhard","last_name":"Reineke","first_name":"Bernhard"},{"full_name":"Zentgraf, Thomas","first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525"},{"id":"20798","full_name":"Meier, Cedrik","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572","first_name":"Cedrik"},{"id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk","last_name":"Reuter"}],"type":"journal_article","keyword":["epitaxial lift-off","GaAs/AlxGa1−xAs heterostructures","selective etching"],"department":[{"_id":"230"},{"_id":"429"}],"date_created":"2020-12-02T09:50:10Z","abstract":[{"text":"GaAs-(111)-nanostructures exhibiting second harmonic generation are new building blocks in nonlinear optics. Such structures can be fabricated through epitaxial lift-off using selective etching of Al-containing layers and subsequent transfer to glass substrates. Herein, the selective etching of (111)B-oriented AlxGa1−xAs sacrificial layers (10–50 nm thick) with different aluminum concentrations (x = 0.5–1.0) in 10\\% hydrofluoric acid is investigated and compared with standard (100)-oriented structures. The thinner the sacrificial layer and the lower the aluminum content, the lower the lateral etch rate. For both orientations, the lateral etch rates are in the same order of magnitude, but some quantitative differences exist. Furthermore, the epitaxial lift-off, the transfer, and the nanopatterning of thin (111)B-oriented GaAs membranes are demonstrated. Atomic force microscopy and high-resolution X-ray diffraction measurements reveal the high structural quality of the transferred GaAs-(111) films.","lang":"eng"}],"issue":"3","publication":"physica status solidi (a)"},{"_id":"20900","language":[{"iso":"eng"}],"article_number":"126009","volume":557,"user_id":"20798","doi":"10.1016/j.jcrysgro.2020.126009","publication_identifier":{"issn":["0022-0248"]},"author":[{"full_name":"Albert, M.","first_name":"M.","last_name":"Albert"},{"last_name":"Golla","first_name":"C.","full_name":"Golla, C."},{"id":"20798","full_name":"Meier, Cedrik","orcid":"https://orcid.org/0000-0002-3787-3572","first_name":"Cedrik","last_name":"Meier"}],"title":"Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy","year":"2021","status":"public","intvolume":"       557","publication_status":"published","date_updated":"2022-01-06T06:54:41Z","date_created":"2021-01-12T13:52:31Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"429"}],"type":"journal_article","citation":{"short":"M. Albert, C. Golla, C. Meier, Journal of Crystal Growth 557 (2021).","chicago":"Albert, M., C. Golla, and Cedrik Meier. “Optical In-Situ Temperature Management for High-Quality ZnO Molecular Beam Epitaxy.” <i>Journal of Crystal Growth</i> 557 (2021). <a href=\"https://doi.org/10.1016/j.jcrysgro.2020.126009\">https://doi.org/10.1016/j.jcrysgro.2020.126009</a>.","apa":"Albert, M., Golla, C., &#38; Meier, C. (2021). Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy. <i>Journal of Crystal Growth</i>, <i>557</i>. <a href=\"https://doi.org/10.1016/j.jcrysgro.2020.126009\">https://doi.org/10.1016/j.jcrysgro.2020.126009</a>","ieee":"M. Albert, C. Golla, and C. Meier, “Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy,” <i>Journal of Crystal Growth</i>, vol. 557, 2021.","ama":"Albert M, Golla C, Meier C. Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy. <i>Journal of Crystal Growth</i>. 2021;557. doi:<a href=\"https://doi.org/10.1016/j.jcrysgro.2020.126009\">10.1016/j.jcrysgro.2020.126009</a>","bibtex":"@article{Albert_Golla_Meier_2021, title={Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy}, volume={557}, DOI={<a href=\"https://doi.org/10.1016/j.jcrysgro.2020.126009\">10.1016/j.jcrysgro.2020.126009</a>}, number={126009}, journal={Journal of Crystal Growth}, author={Albert, M. and Golla, C. and Meier, Cedrik}, year={2021} }","mla":"Albert, M., et al. “Optical In-Situ Temperature Management for High-Quality ZnO Molecular Beam Epitaxy.” <i>Journal of Crystal Growth</i>, vol. 557, 126009, 2021, doi:<a href=\"https://doi.org/10.1016/j.jcrysgro.2020.126009\">10.1016/j.jcrysgro.2020.126009</a>."},"publication":"Journal of Crystal Growth","project":[{"_id":"53","name":"TRR 142"},{"_id":"55","name":"TRR 142 - Project Area B"},{"name":"TRR 142 - Subproject B1","_id":"66"}]},{"author":[{"last_name":"Kruk","first_name":"Sergey S.","full_name":"Kruk, Sergey S."},{"full_name":"Gao, Wenlong","first_name":"Wenlong","last_name":"Gao"},{"full_name":"Choi, Duk-Yong","first_name":"Duk-Yong","last_name":"Choi"},{"id":"30525","full_name":"Zentgraf, Thomas","last_name":"Zentgraf","first_name":"Thomas","orcid":"0000-0002-8662-1101"},{"full_name":"Zhang, Shuang","last_name":"Zhang","first_name":"Shuang"},{"full_name":"Kivshar, Yuri","first_name":"Yuri","last_name":"Kivshar"}],"publication_identifier":{"issn":["1530-6984","1530-6992"]},"year":"2021","title":"Nonlinear Imaging of Nanoscale Topological Corner States","article_type":"original","intvolume":"        21","publication_status":"published","date_updated":"2022-01-06T06:55:29Z","language":[{"iso":"eng"}],"doi":"10.1021/acs.nanolett.1c00449","issue":"11","publication":"Nano Letters","abstract":[{"text":"Topological states of light represent counterintuitive optical modes localized at boundaries of finite-size optical structures that originate from the properties of the bulk. Being defined by bulk properties, such boundary states are insensitive to certain types of perturbations, thus naturally enhancing robustness of photonic circuitries. Conventionally, the N-dimensional bulk modes correspond to (N – 1)-dimensional boundary states. The higher-order bulk-boundary correspondence relates N-dimensional bulk to boundary states with dimensionality reduced by more than 1. A special interest lies in miniaturization of such higher-order topological states to the nanoscale. Here, we realize nanoscale topological corner states in metasurfaces with C6-symmetric honeycomb lattices. We directly observe nanoscale topology-empowered edge and corner localizations of light and enhancement of light–matter interactions via a nonlinear imaging technique. Control of light at the nanoscale empowered by topology may facilitate miniaturization and on-chip integration of classical and quantum photonic devices.","lang":"eng"}],"date_created":"2021-05-19T12:48:36Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"type":"journal_article","status":"public","_id":"22215","publisher":"ACS","page":"4592–4597","volume":21,"user_id":"30525","citation":{"mla":"Kruk, Sergey S., et al. “Nonlinear Imaging of Nanoscale Topological Corner States.” <i>Nano Letters</i>, vol. 21, no. 11, ACS, 2021, pp. 4592–4597, doi:<a href=\"https://doi.org/10.1021/acs.nanolett.1c00449\">10.1021/acs.nanolett.1c00449</a>.","bibtex":"@article{Kruk_Gao_Choi_Zentgraf_Zhang_Kivshar_2021, title={Nonlinear Imaging of Nanoscale Topological Corner States}, volume={21}, DOI={<a href=\"https://doi.org/10.1021/acs.nanolett.1c00449\">10.1021/acs.nanolett.1c00449</a>}, number={11}, journal={Nano Letters}, publisher={ACS}, author={Kruk, Sergey S. and Gao, Wenlong and Choi, Duk-Yong and Zentgraf, Thomas and Zhang, Shuang and Kivshar, Yuri}, year={2021}, pages={4592–4597} }","ama":"Kruk SS, Gao W, Choi D-Y, Zentgraf T, Zhang S, Kivshar Y. Nonlinear Imaging of Nanoscale Topological Corner States. <i>Nano Letters</i>. 2021;21(11):4592–4597. doi:<a href=\"https://doi.org/10.1021/acs.nanolett.1c00449\">10.1021/acs.nanolett.1c00449</a>","ieee":"S. S. Kruk, W. Gao, D.-Y. Choi, T. Zentgraf, S. Zhang, and Y. Kivshar, “Nonlinear Imaging of Nanoscale Topological Corner States,” <i>Nano Letters</i>, vol. 21, no. 11, pp. 4592–4597, 2021.","apa":"Kruk, S. S., Gao, W., Choi, D.-Y., Zentgraf, T., Zhang, S., &#38; Kivshar, Y. (2021). Nonlinear Imaging of Nanoscale Topological Corner States. <i>Nano Letters</i>, <i>21</i>(11), 4592–4597. <a href=\"https://doi.org/10.1021/acs.nanolett.1c00449\">https://doi.org/10.1021/acs.nanolett.1c00449</a>","chicago":"Kruk, Sergey S., Wenlong Gao, Duk-Yong Choi, Thomas Zentgraf, Shuang Zhang, and Yuri Kivshar. “Nonlinear Imaging of Nanoscale Topological Corner States.” <i>Nano Letters</i> 21, no. 11 (2021): 4592–4597. <a href=\"https://doi.org/10.1021/acs.nanolett.1c00449\">https://doi.org/10.1021/acs.nanolett.1c00449</a>.","short":"S.S. Kruk, W. Gao, D.-Y. Choi, T. Zentgraf, S. Zhang, Y. Kivshar, Nano Letters 21 (2021) 4592–4597."},"quality_controlled":"1"},{"date_created":"2021-06-16T05:52:21Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"429"}],"type":"journal_article","publication":"Optical Materials Express","issue":"7","abstract":[{"lang":"eng","text":"We realize and investigate a nonlinear metasurface taking advantage of intersubband transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing to huge band offsets, the structures offer resonant transitions in the telecom window around 1.55 µm. These heterostructures are functionalized with an array of plasmonic antennas featuring cross-polarized resonances at these near-infrared wavelengths and their second harmonic. This kind of nonlinear metasurface allows for substantial second-harmonic generation at normal incidence which is completely absent for an antenna array without the multi-quantum well structure underneath. While the second harmonic is originally radiated only into the plane of the quantum wells, a proper geometrical arrangement of the plasmonic elements permits the redirection of the second-harmonic light to free-space radiation, which is emitted perpendicular to the surface."}],"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-11-7-2134&id=452008"}],"article_number":"2134","doi":"10.1364/ome.426236","publication_identifier":{"issn":["2159-3930"]},"author":[{"full_name":"Mundry, Jan","first_name":"Jan","last_name":"Mundry"},{"last_name":"Spreyer","first_name":"Florian","full_name":"Spreyer, Florian"},{"full_name":"Jmerik, Valentin","last_name":"Jmerik","first_name":"Valentin"},{"full_name":"Ivanov, Sergey","first_name":"Sergey","last_name":"Ivanov"},{"id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas","orcid":"0000-0002-8662-1101","last_name":"Zentgraf"},{"full_name":"Betz, Markus","first_name":"Markus","last_name":"Betz"}],"year":"2021","title":"Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays","intvolume":"        11","article_type":"original","date_updated":"2022-01-06T06:55:33Z","publication_status":"published","oa":"1","citation":{"apa":"Mundry, J., Spreyer, F., Jmerik, V., Ivanov, S., Zentgraf, T., &#38; Betz, M. (2021). Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>, <i>11</i>(7). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>","ieee":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, and M. Betz, “Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays,” <i>Optical Materials Express</i>, vol. 11, no. 7, 2021.","short":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, M. Betz, Optical Materials Express 11 (2021).","chicago":"Mundry, Jan, Florian Spreyer, Valentin Jmerik, Sergey Ivanov, Thomas Zentgraf, and Markus Betz. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i> 11, no. 7 (2021). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>.","mla":"Mundry, Jan, et al. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i>, vol. 11, no. 7, 2134, OSA, 2021, doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>.","ama":"Mundry J, Spreyer F, Jmerik V, Ivanov S, Zentgraf T, Betz M. Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>. 2021;11(7). doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>","bibtex":"@article{Mundry_Spreyer_Jmerik_Ivanov_Zentgraf_Betz_2021, title={Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays}, volume={11}, DOI={<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>}, number={72134}, journal={Optical Materials Express}, publisher={OSA}, author={Mundry, Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf, Thomas and Betz, Markus}, year={2021} }"},"project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142 - Subproject A8","_id":"65"}],"quality_controlled":"1","_id":"22450","publisher":"OSA","volume":11,"user_id":"30525","status":"public"},{"date_created":"2021-07-07T07:01:07Z","department":[{"_id":"15"},{"_id":"230"}],"type":"journal_article","citation":{"chicago":"Meier, F., M. Protte, E. Baron, M. Feneberg, R. Goldhahn, Dirk Reuter, and D. J. As. “Selective Area Growth of Cubic Gallium Nitride on Silicon (001) and 3C-Silicon Carbide (001).” <i>AIP Advances</i>, 2021. <a href=\"https://doi.org/10.1063/5.0053865\">https://doi.org/10.1063/5.0053865</a>.","short":"F. Meier, M. Protte, E. Baron, M. Feneberg, R. Goldhahn, D. Reuter, D.J. As, AIP Advances (2021).","ama":"Meier F, Protte M, Baron E, et al. Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001). <i>AIP Advances</i>. 2021. doi:<a href=\"https://doi.org/10.1063/5.0053865\">10.1063/5.0053865</a>","bibtex":"@article{Meier_Protte_Baron_Feneberg_Goldhahn_Reuter_As_2021, title={Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001)}, DOI={<a href=\"https://doi.org/10.1063/5.0053865\">10.1063/5.0053865</a>}, number={075013}, journal={AIP Advances}, author={Meier, F. and Protte, M. and Baron, E. and Feneberg, M. and Goldhahn, R. and Reuter, Dirk and As, D. J.}, year={2021} }","apa":"Meier, F., Protte, M., Baron, E., Feneberg, M., Goldhahn, R., Reuter, D., &#38; As, D. J. (2021). Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001). <i>AIP Advances</i>. <a href=\"https://doi.org/10.1063/5.0053865\">https://doi.org/10.1063/5.0053865</a>","mla":"Meier, F., et al. “Selective Area Growth of Cubic Gallium Nitride on Silicon (001) and 3C-Silicon Carbide (001).” <i>AIP Advances</i>, 075013, 2021, doi:<a href=\"https://doi.org/10.1063/5.0053865\">10.1063/5.0053865</a>.","ieee":"F. Meier <i>et al.</i>, “Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001),” <i>AIP Advances</i>, 2021."},"publication":"AIP Advances","language":[{"iso":"eng"}],"_id":"22533","article_number":"075013","doi":"10.1063/5.0053865","user_id":"42514","publication_identifier":{"issn":["2158-3226"]},"author":[{"first_name":"F.","last_name":"Meier","full_name":"Meier, F."},{"first_name":"M.","last_name":"Protte","full_name":"Protte, M."},{"full_name":"Baron, E.","first_name":"E.","last_name":"Baron"},{"last_name":"Feneberg","first_name":"M.","full_name":"Feneberg, M."},{"first_name":"R.","last_name":"Goldhahn","full_name":"Goldhahn, R."},{"first_name":"Dirk","last_name":"Reuter","full_name":"Reuter, Dirk","id":"37763"},{"full_name":"As, D. J.","last_name":"As","first_name":"D. J."}],"year":"2021","title":"Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001)","status":"public","date_updated":"2022-01-06T06:55:36Z","publication_status":"published"},{"citation":{"ieee":"G. Yoon, T. Tanaka, T. Zentgraf, and J. Rho, “Recent progress on metasurfaces: applications and fabrication,” <i>Journal of Physics D: Applied Physics</i>, vol. 54, 2021.","apa":"Yoon, G., Tanaka, T., Zentgraf, T., &#38; Rho, J. (2021). Recent progress on metasurfaces: applications and fabrication. <i>Journal of Physics D: Applied Physics</i>, <i>54</i>. <a href=\"https://doi.org/10.1088/1361-6463/ac0faa\">https://doi.org/10.1088/1361-6463/ac0faa</a>","chicago":"Yoon, Gwanho, Takuo Tanaka, Thomas Zentgraf, and Junsuk Rho. “Recent Progress on Metasurfaces: Applications and Fabrication.” <i>Journal of Physics D: Applied Physics</i> 54 (2021). <a href=\"https://doi.org/10.1088/1361-6463/ac0faa\">https://doi.org/10.1088/1361-6463/ac0faa</a>.","short":"G. Yoon, T. Tanaka, T. Zentgraf, J. Rho, Journal of Physics D: Applied Physics 54 (2021).","mla":"Yoon, Gwanho, et al. “Recent Progress on Metasurfaces: Applications and Fabrication.” <i>Journal of Physics D: Applied Physics</i>, vol. 54, 383002, 2021, doi:<a href=\"https://doi.org/10.1088/1361-6463/ac0faa\">10.1088/1361-6463/ac0faa</a>.","bibtex":"@article{Yoon_Tanaka_Zentgraf_Rho_2021, title={Recent progress on metasurfaces: applications and fabrication}, volume={54}, DOI={<a href=\"https://doi.org/10.1088/1361-6463/ac0faa\">10.1088/1361-6463/ac0faa</a>}, number={383002}, journal={Journal of Physics D: Applied Physics}, author={Yoon, Gwanho and Tanaka, Takuo and Zentgraf, Thomas and Rho, Junsuk}, year={2021} }","ama":"Yoon G, Tanaka T, Zentgraf T, Rho J. Recent progress on metasurfaces: applications and fabrication. <i>Journal of Physics D: Applied Physics</i>. 2021;54. doi:<a href=\"https://doi.org/10.1088/1361-6463/ac0faa\">10.1088/1361-6463/ac0faa</a>"},"quality_controlled":"1","status":"public","_id":"22723","user_id":"30525","volume":54,"publication":"Journal of Physics D: Applied Physics","date_created":"2021-07-14T06:21:07Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"title":"Recent progress on metasurfaces: applications and fabrication","year":"2021","publication_identifier":{"issn":["0022-3727","1361-6463"]},"author":[{"full_name":"Yoon, Gwanho","first_name":"Gwanho","last_name":"Yoon"},{"last_name":"Tanaka","first_name":"Takuo","full_name":"Tanaka, Takuo"},{"id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas","full_name":"Zentgraf, Thomas"},{"full_name":"Rho, Junsuk","last_name":"Rho","first_name":"Junsuk"}],"publication_status":"published","date_updated":"2022-01-06T06:55:39Z","article_type":"review","intvolume":"        54","article_number":"383002","main_file_link":[{"url":"https://iopscience.iop.org/article/10.1088/1361-6463/ac0faa"}],"language":[{"iso":"eng"}],"doi":"10.1088/1361-6463/ac0faa"},{"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."}],"citation":{"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} }","ama":"Jonas B, Heinze D, Schöll E, et al. Nonlinear down-conversion in a single quantum dot. <i>arXiv:210512393</i>. 2021.","mla":"Jonas, B., et al. “Nonlinear Down-Conversion in a Single Quantum Dot.” <i>ArXiv:2105.12393</i>, 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.” <i>ArXiv:2105.12393</i>, 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).","ieee":"B. Jonas <i>et al.</i>, “Nonlinear down-conversion in a single quantum dot,” <i>arXiv:2105.12393</i>. 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. <i>ArXiv:2105.12393</i>."},"file_date_updated":"2021-07-25T12:46:24Z","publication":"arXiv:2105.12393","department":[{"_id":"15"},{"_id":"230"}],"type":"preprint","date_created":"2021-07-25T12:45:25Z","file":[{"date_created":"2021-07-25T12:46:24Z","creator":"zrenner","content_type":"application/pdf","success":1,"file_id":"22808","file_size":1786455,"access_level":"closed","file_name":"2105.12393.pdf","date_updated":"2021-07-25T12:46:24Z","relation":"main_file"}],"has_accepted_license":"1","date_updated":"2022-01-06T06:55:42Z","author":[{"last_name":"Jonas","first_name":"B.","full_name":"Jonas, B."},{"full_name":"Heinze, D.","last_name":"Heinze","first_name":"D."},{"full_name":"Schöll, E.","first_name":"E.","last_name":"Schöll"},{"full_name":"Kallert, P.","first_name":"P.","last_name":"Kallert"},{"first_name":"T.","last_name":"Langer","full_name":"Langer, T."},{"first_name":"S.","last_name":"Krehs","full_name":"Krehs, S."},{"full_name":"Widhalm, A.","first_name":"A.","last_name":"Widhalm"},{"full_name":"Jöns, K. D.","last_name":"Jöns","first_name":"K. D."},{"full_name":"Reuter, D.","last_name":"Reuter","first_name":"D."},{"first_name":"S.","last_name":"Schumacher","full_name":"Schumacher, S."},{"last_name":"Zrenner","first_name":"Artur","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606"}],"year":"2021","status":"public","title":"Nonlinear down-conversion in a single quantum dot","user_id":"606","ddc":["530"],"_id":"22807","language":[{"iso":"eng"}]},{"oa":"1","file_date_updated":"2021-04-30T11:59:16Z","citation":{"short":"M. Hammer, L. Ebers, J. Förstner, Journal of the Optical Society of America B 38 (2021) 1717.","chicago":"Hammer, Manfred, Lena Ebers, and Jens Förstner. “Resonant Evanescent Excitation of Guided Waves with High-Order Optical Angular Momentum.” <i>Journal of the Optical Society of America B</i> 38, no. 5 (2021): 1717. <a href=\"https://doi.org/10.1364/josab.422731\">https://doi.org/10.1364/josab.422731</a>.","apa":"Hammer, M., Ebers, L., &#38; Förstner, J. (2021). Resonant evanescent excitation of guided waves with high-order optical angular momentum. <i>Journal of the Optical Society of America B</i>, <i>38</i>(5), 1717. <a href=\"https://doi.org/10.1364/josab.422731\">https://doi.org/10.1364/josab.422731</a>","ieee":"M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of guided waves with high-order optical angular momentum,” <i>Journal of the Optical Society of America B</i>, vol. 38, no. 5, p. 1717, 2021.","ama":"Hammer M, Ebers L, Förstner J. Resonant evanescent excitation of guided waves with high-order optical angular momentum. <i>Journal of the Optical Society of America B</i>. 2021;38(5):1717. doi:<a href=\"https://doi.org/10.1364/josab.422731\">10.1364/josab.422731</a>","bibtex":"@article{Hammer_Ebers_Förstner_2021, title={Resonant evanescent excitation of guided waves with high-order optical angular momentum}, volume={38}, DOI={<a href=\"https://doi.org/10.1364/josab.422731\">10.1364/josab.422731</a>}, number={5}, journal={Journal of the Optical Society of America B}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={1717} }","mla":"Hammer, Manfred, et al. “Resonant Evanescent Excitation of Guided Waves with High-Order Optical Angular Momentum.” <i>Journal of the Optical Society of America B</i>, vol. 38, no. 5, 2021, p. 1717, doi:<a href=\"https://doi.org/10.1364/josab.422731\">10.1364/josab.422731</a>."},"project":[{"name":"TRR 142 - Project Area C","_id":"56"},{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Subproject C5","_id":"75"}],"page":"1717","_id":"21932","ddc":["530"],"user_id":"158","volume":38,"status":"public","has_accepted_license":"1","file":[{"content_type":"application/pdf","file_id":"21933","access_level":"open_access","file_size":1963211,"file_name":"oamex.pdf","date_updated":"2021-04-30T11:57:14Z","relation":"main_file","date_created":"2021-04-30T11:57:14Z","creator":"fossie"},{"embargo_to":"open_access","date_created":"2021-04-30T11:59:16Z","access_level":"local","file_name":"2021-04 Hammer - JOSA B - Resonant evanescent excitation of guides waves with high-order angular momentum.pdf","creator":"fossie","file_size":7750006,"date_updated":"2021-04-30T11:59:16Z","embargo":"2022-05-01","relation":"main_file","content_type":"application/pdf","file_id":"21934"}],"date_created":"2021-04-30T11:54:03Z","type":"journal_article","keyword":["tet_topic_waveguides"],"department":[{"_id":"61"},{"_id":"230"}],"publication":"Journal of the Optical Society of America B","issue":"5","abstract":[{"lang":"eng","text":"Gaussian-beam-like bundles of semi-guided waves propagating in a dielectric slab can excite modes with high-order optical angular momentum supported by a circular fiber. We consider a multimode step-index fiber with a high-index coating, where the waves in the slab are evanescently coupled to the modes of the fiber. Conditions for effective resonant interaction are identified. Based on a hybrid analytical–numerical coupled mode model, our simulations predict that substantial fractions of the input power can be focused into waves with specific orbital angular momentum, of excellent purity, with a clear distinction between degenerate modes with opposite vorticity."}],"language":[{"iso":"eng"}],"doi":"10.1364/josab.422731","title":"Resonant evanescent excitation of guided waves with high-order optical angular momentum","year":"2021","publication_identifier":{"issn":["0740-3224","1520-8540"]},"author":[{"full_name":"Hammer, Manfred","orcid":"0000-0002-6331-9348","first_name":"Manfred","last_name":"Hammer","id":"48077"},{"full_name":"Ebers, Lena","last_name":"Ebers","first_name":"Lena","id":"40428"},{"full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","first_name":"Jens","last_name":"Förstner","id":"158"}],"date_updated":"2022-01-06T06:55:20Z","publication_status":"published","intvolume":"        38"},{"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>The coherent electron spin dynamics of an ensemble of singly charged (In,Ga)As/GaAs quantum dots in a transverse magnetic field is driven by periodic optical excitation at 1 GHz repetition frequency. Despite the strong inhomogeneity of the electron <jats:italic>g</jats:italic> factor, the spectral spread of optical transitions, and the broad distribution of nuclear spin fluctuations, we are able to push the whole ensemble of excited spins into a single Larmor precession mode that is commensurate with the laser repetition frequency. Furthermore, we demonstrate that an optical detuning of the pump pulses from the probed optical transitions induces a directed dynamic nuclear polarization and leads to a discretization of the total magnetic field acting on the electron ensemble. Finally, we show that the highly periodic optical excitation can be used as universal tool for strongly reducing the nuclear spin fluctuations and preparation of a robust nuclear environment for subsequent manipulation of the electron spins, also at varying operation frequencies.</jats:p>"}],"citation":{"ieee":"E. Evers <i>et al.</i>, “Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation,” <i>npj Quantum Information</i>, 2021.","apa":"Evers, E., Kopteva, N. E., Yugova, I. A., Yakovlev, D. R., Reuter, D., Wieck, A. D., … Greilich, A. (2021). Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation. <i>Npj Quantum Information</i>. <a href=\"https://doi.org/10.1038/s41534-021-00395-1\">https://doi.org/10.1038/s41534-021-00395-1</a>","short":"E. Evers, N.E. Kopteva, I.A. Yugova, D.R. Yakovlev, D. Reuter, A.D. Wieck, M. Bayer, A. Greilich, Npj Quantum Information (2021).","chicago":"Evers, E., N. E. Kopteva, I. A. Yugova, D. R. Yakovlev, Dirk Reuter, A. D. Wieck, M. Bayer, and A. Greilich. “Suppression of Nuclear Spin Fluctuations in an InGaAs Quantum Dot Ensemble by GHz-Pulsed Optical Excitation.” <i>Npj Quantum Information</i>, 2021. <a href=\"https://doi.org/10.1038/s41534-021-00395-1\">https://doi.org/10.1038/s41534-021-00395-1</a>.","mla":"Evers, E., et al. “Suppression of Nuclear Spin Fluctuations in an InGaAs Quantum Dot Ensemble by GHz-Pulsed Optical Excitation.” <i>Npj Quantum Information</i>, 2021, doi:<a href=\"https://doi.org/10.1038/s41534-021-00395-1\">10.1038/s41534-021-00395-1</a>.","bibtex":"@article{Evers_Kopteva_Yugova_Yakovlev_Reuter_Wieck_Bayer_Greilich_2021, title={Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation}, DOI={<a href=\"https://doi.org/10.1038/s41534-021-00395-1\">10.1038/s41534-021-00395-1</a>}, journal={npj Quantum Information}, author={Evers, E. and Kopteva, N. E. and Yugova, I. A. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Bayer, M. and Greilich, A.}, year={2021} }","ama":"Evers E, Kopteva NE, Yugova IA, et al. Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation. <i>npj Quantum Information</i>. 2021. doi:<a href=\"https://doi.org/10.1038/s41534-021-00395-1\">10.1038/s41534-021-00395-1</a>"},"publication":"npj Quantum Information","department":[{"_id":"15"},{"_id":"230"}],"type":"journal_article","date_created":"2021-05-05T09:48:58Z","date_updated":"2022-01-06T06:55:22Z","publication_status":"published","publication_identifier":{"issn":["2056-6387"]},"author":[{"full_name":"Evers, E.","first_name":"E.","last_name":"Evers"},{"first_name":"N. E.","last_name":"Kopteva","full_name":"Kopteva, N. E."},{"full_name":"Yugova, I. A.","first_name":"I. A.","last_name":"Yugova"},{"full_name":"Yakovlev, D. R.","last_name":"Yakovlev","first_name":"D. R."},{"id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk","last_name":"Reuter"},{"full_name":"Wieck, A. D.","last_name":"Wieck","first_name":"A. D."},{"first_name":"M.","last_name":"Bayer","full_name":"Bayer, M."},{"last_name":"Greilich","first_name":"A.","full_name":"Greilich, A."}],"year":"2021","title":"Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation","status":"public","doi":"10.1038/s41534-021-00395-1","user_id":"42514","_id":"22003","language":[{"iso":"eng"}]},{"publication":"Advanced Quantum Technologies","citation":{"mla":"Schall, Johannes, et al. “Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography.” <i>Advanced Quantum Technologies</i>, 2100002, 2021, doi:<a href=\"https://doi.org/10.1002/qute.202100002\">10.1002/qute.202100002</a>.","bibtex":"@article{Schall_Deconinck_Bart_Florian_Helversen_Dangel_Schmidt_Bremer_Bopp_Hüllen_et al._2021, title={Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography}, DOI={<a href=\"https://doi.org/10.1002/qute.202100002\">10.1002/qute.202100002</a>}, number={2100002}, journal={Advanced Quantum Technologies}, author={Schall, Johannes and Deconinck, Marielle and Bart, Nikolai and Florian, Matthias and Helversen, Martin and Dangel, Christian and Schmidt, Ronny and Bremer, Lucas and Bopp, Frederik and Hüllen, Isabell and et al.}, year={2021} }","ama":"Schall J, Deconinck M, Bart N, et al. Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography. <i>Advanced Quantum Technologies</i>. 2021. doi:<a href=\"https://doi.org/10.1002/qute.202100002\">10.1002/qute.202100002</a>","ieee":"J. Schall <i>et al.</i>, “Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography,” <i>Advanced Quantum Technologies</i>, 2021.","apa":"Schall, J., Deconinck, M., Bart, N., Florian, M., Helversen, M., Dangel, C., … Reitzenstein, S. (2021). Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography. <i>Advanced Quantum Technologies</i>. <a href=\"https://doi.org/10.1002/qute.202100002\">https://doi.org/10.1002/qute.202100002</a>","chicago":"Schall, Johannes, Marielle Deconinck, Nikolai Bart, Matthias Florian, Martin Helversen, Christian Dangel, Ronny Schmidt, et al. “Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography.” <i>Advanced Quantum Technologies</i>, 2021. <a href=\"https://doi.org/10.1002/qute.202100002\">https://doi.org/10.1002/qute.202100002</a>.","short":"J. Schall, M. Deconinck, N. Bart, M. Florian, M. Helversen, C. Dangel, R. Schmidt, L. Bremer, F. Bopp, I. Hüllen, C. Gies, D. Reuter, A.D. Wieck, S. Rodt, J.J. Finley, F. Jahnke, A. Ludwig, S. Reitzenstein, Advanced Quantum Technologies (2021)."},"date_created":"2021-05-05T09:53:34Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"}],"status":"public","title":"Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography","year":"2021","author":[{"first_name":"Johannes","last_name":"Schall","full_name":"Schall, Johannes"},{"last_name":"Deconinck","first_name":"Marielle","full_name":"Deconinck, Marielle"},{"first_name":"Nikolai","last_name":"Bart","full_name":"Bart, Nikolai"},{"last_name":"Florian","first_name":"Matthias","full_name":"Florian, Matthias"},{"last_name":"Helversen","first_name":"Martin","full_name":"Helversen, Martin"},{"last_name":"Dangel","first_name":"Christian","full_name":"Dangel, Christian"},{"first_name":"Ronny","last_name":"Schmidt","full_name":"Schmidt, Ronny"},{"first_name":"Lucas","last_name":"Bremer","full_name":"Bremer, Lucas"},{"full_name":"Bopp, Frederik","last_name":"Bopp","first_name":"Frederik"},{"full_name":"Hüllen, Isabell","last_name":"Hüllen","first_name":"Isabell"},{"last_name":"Gies","first_name":"Christopher","full_name":"Gies, Christopher"},{"id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk","last_name":"Reuter"},{"full_name":"Wieck, Andreas D.","last_name":"Wieck","first_name":"Andreas D."},{"full_name":"Rodt, Sven","last_name":"Rodt","first_name":"Sven"},{"first_name":"Jonathan J.","last_name":"Finley","full_name":"Finley, Jonathan J."},{"full_name":"Jahnke, Frank","first_name":"Frank","last_name":"Jahnke"},{"full_name":"Ludwig, Arne","last_name":"Ludwig","first_name":"Arne"},{"first_name":"Stephan","last_name":"Reitzenstein","full_name":"Reitzenstein, Stephan"}],"publication_identifier":{"issn":["2511-9044","2511-9044"]},"date_updated":"2022-01-06T06:55:22Z","publication_status":"published","article_number":"2100002","language":[{"iso":"eng"}],"_id":"22004","doi":"10.1002/qute.202100002","user_id":"42514"},{"oa":"1","quality_controlled":"1","citation":{"mla":"Lu, Jinlong, et al. “Observing 0D Subwavelength-Localized Modes at ~100 THz Protected by Weak Topology.” <i>Science Advances</i>, vol. 7, no. 49, eabl3903, 2021, doi:<a href=\"https://doi.org/10.1126/sciadv.abl3903\">10.1126/sciadv.abl3903</a>.","ama":"Lu J, Wirth KG, Gao W, et al. Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology. <i>Science Advances</i>. 2021;7(49). doi:<a href=\"https://doi.org/10.1126/sciadv.abl3903\">10.1126/sciadv.abl3903</a>","bibtex":"@article{Lu_Wirth_Gao_Heßler_Sain_Taubner_Zentgraf_2021, title={Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology}, volume={7}, DOI={<a href=\"https://doi.org/10.1126/sciadv.abl3903\">10.1126/sciadv.abl3903</a>}, number={49eabl3903}, journal={Science Advances}, author={Lu, Jinlong and Wirth, Konstantin G. and Gao, Wenlong and Heßler, Andreas and Sain, Basudeb and Taubner, Thomas and Zentgraf, Thomas}, year={2021} }","apa":"Lu, J., Wirth, K. G., Gao, W., Heßler, A., Sain, B., Taubner, T., &#38; Zentgraf, T. (2021). Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology. <i>Science Advances</i>, <i>7</i>(49), Article eabl3903. <a href=\"https://doi.org/10.1126/sciadv.abl3903\">https://doi.org/10.1126/sciadv.abl3903</a>","ieee":"J. Lu <i>et al.</i>, “Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology,” <i>Science Advances</i>, vol. 7, no. 49, Art. no. eabl3903, 2021, doi: <a href=\"https://doi.org/10.1126/sciadv.abl3903\">10.1126/sciadv.abl3903</a>.","short":"J. Lu, K.G. Wirth, W. Gao, A. Heßler, B. Sain, T. Taubner, T. Zentgraf, Science Advances 7 (2021).","chicago":"Lu, Jinlong, Konstantin G. Wirth, Wenlong Gao, Andreas Heßler, Basudeb Sain, Thomas Taubner, and Thomas Zentgraf. “Observing 0D Subwavelength-Localized Modes at ~100 THz Protected by Weak Topology.” <i>Science Advances</i> 7, no. 49 (2021). <a href=\"https://doi.org/10.1126/sciadv.abl3903\">https://doi.org/10.1126/sciadv.abl3903</a>."},"file_date_updated":"2022-03-03T07:24:44Z","volume":7,"ddc":["530"],"user_id":"30525","_id":"28255","has_accepted_license":"1","status":"public","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"type":"journal_article","date_created":"2021-12-02T19:40:56Z","file":[{"content_type":"application/pdf","success":1,"file_id":"30197","file_size":2609760,"access_level":"closed","file_name":"2021_ScienceAdv_TopologicalMode_Manuscript_Arxiv.pdf","date_updated":"2022-03-03T07:24:44Z","relation":"main_file","date_created":"2022-03-03T07:24:44Z","creator":"zentgraf"}],"abstract":[{"text":"Topological photonic crystals (TPhCs) provide robust manipulation of light with built-in immunity to fabrication tolerances and disorder. Recently, it was shown that TPhCs based on weak topology with a dislocation inherit this robustness and further host topologically protected lower-dimensional localized modes. However, TPhCs with weak topology at optical frequencies have not been demonstrated so far. Here, we use scattering-type scanning near-field optical microscopy to verify mid-bandgap zero-dimensional light localization close to 100 THz in a TPhC with nontrivial Zak phase and an edge dislocation. We show that because of the weak topology, differently extended dislocation centers induce similarly strong light localization. The experimental results are supported by full-field simulations. Along with the underlying fundamental physics, our results lay a foundation for the application of TPhCs based on weak topology in active topological nanophotonics, and nonlinear and quantum optic integrated devices because of their strong and robust light localization.","lang":"eng"}],"issue":"49","publication":"Science Advances","doi":"10.1126/sciadv.abl3903","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.science.org/doi/10.1126/sciadv.abl3903","open_access":"1"}],"article_number":"eabl3903","intvolume":"         7","article_type":"original","date_updated":"2022-03-03T07:25:11Z","publication_status":"published","author":[{"full_name":"Lu, Jinlong","first_name":"Jinlong","last_name":"Lu"},{"full_name":"Wirth, Konstantin G.","last_name":"Wirth","first_name":"Konstantin G."},{"full_name":"Gao, Wenlong","first_name":"Wenlong","last_name":"Gao"},{"last_name":"Heßler","first_name":"Andreas","full_name":"Heßler, Andreas"},{"full_name":"Sain, Basudeb","first_name":"Basudeb","last_name":"Sain"},{"full_name":"Taubner, Thomas","first_name":"Thomas","last_name":"Taubner"},{"full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf","id":"30525"}],"publication_identifier":{"issn":["2375-2548"]},"title":"Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology","year":"2021"},{"language":[{"iso":"eng"}],"doi":"10.1364/osac.437549","author":[{"id":"48077","orcid":"0000-0002-6331-9348","first_name":"Manfred","last_name":"Hammer","full_name":"Hammer, Manfred"},{"full_name":"Ebers, Lena","first_name":"Lena","last_name":"Ebers","id":"40428"},{"full_name":"Förstner, Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","first_name":"Jens","id":"158"}],"publication_identifier":{"issn":["2578-7519"]},"year":"2021","title":"Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics","intvolume":"         4","date_updated":"2022-11-18T09:58:03Z","publication_status":"published","date_created":"2021-11-30T20:04:57Z","file":[{"date_created":"2021-11-30T20:07:53Z","creator":"fossie","content_type":"application/pdf","file_id":"28197","file_size":6618403,"access_level":"open_access","file_name":"2021-11 Hammer - OSA Continuum - Trenches.pdf","date_updated":"2021-11-30T20:19:15Z","relation":"main_file"}],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"}],"type":"journal_article","keyword":["tet_topic_waveguide"],"publication":"OSA Continuum","issue":"12","abstract":[{"lang":"eng","text":"We show that narrow trenches in a high-contrast silicon-photonics slab can act as lossless power dividers for semi-guided waves. Reflectance and transmittance can be easily configured by selecting the trench width. At sufficiently high angles of incidence, the devices are lossless, apart from material attenuation and scattering due to surface roughness. We numerically simulate a series of devices within the full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as well as for excitation by focused Gaussian wave bundles. Straightforward cascading of the trenches leads to concepts for 1×M-power dividers and a polarization beam splitter."}],"_id":"28196","page":"3081","volume":4,"ddc":["530"],"user_id":"477","status":"public","has_accepted_license":"1","oa":"1","citation":{"apa":"Hammer, M., Ebers, L., &#38; Förstner, J. (2021). Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>, <i>4</i>(12), 3081. <a href=\"https://doi.org/10.1364/osac.437549\">https://doi.org/10.1364/osac.437549</a>","ieee":"M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics,” <i>OSA Continuum</i>, vol. 4, no. 12, p. 3081, 2021, doi: <a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>.","short":"M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081.","chicago":"Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” <i>OSA Continuum</i> 4, no. 12 (2021): 3081. <a href=\"https://doi.org/10.1364/osac.437549\">https://doi.org/10.1364/osac.437549</a>.","mla":"Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” <i>OSA Continuum</i>, vol. 4, no. 12, 2021, p. 3081, doi:<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>.","ama":"Hammer M, Ebers L, Förstner J. Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>. 2021;4(12):3081. doi:<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>","bibtex":"@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics}, volume={4}, DOI={<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>}, number={12}, journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={3081} }"},"file_date_updated":"2021-11-30T20:19:15Z","project":[{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area C","_id":"56"}]},{"issue":"18","publication":"Nanophotonics","abstract":[{"lang":"eng","text":"Optical metasurfaces are perfect candidates for the phase and amplitude modulation of light, featuring an excellent basis for holographic applications. In this work, we present a dual amplitude holographic scheme based on the photon sieve principle, which is then combined with a phase hologram by utilizing the Pancharatnam–Berry phase. We demonstrate that two types of apertures, rectangular and square shapes in a gold film filled with silicon nanoantennas are sufficient to create two amplitude holograms at two different wavelengths in the visible, multiplexed with an additional phase-only hologram. The nanoantennas are tailored to adjust the spectral transmittance of the apertures, enabling the wavelength sensitivity. The phase-only hologram is implemented by utilizing the anisotropic rectangular structure. Interestingly, such three holograms have quantitative mathematical correlations with each other. Thus, the flexibility of polarization and wavelength channels can be utilized with custom-tailored features to achieve such amplitude and phase holography simultaneously without sacrificing any space-bandwidth product. The present scheme has the potential to store different pieces of information which can be displayed separately by switching the wavelength or the polarization state of the reading light beam."}],"date_created":"2021-10-28T07:15:52Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"type":"journal_article","author":[{"full_name":"Frese, Daniel","first_name":"Daniel","last_name":"Frese"},{"full_name":"Sain, Basudeb","first_name":"Basudeb","last_name":"Sain"},{"full_name":"Zhou, Hongqiang","last_name":"Zhou","first_name":"Hongqiang"},{"full_name":"Wang, Yongtian","last_name":"Wang","first_name":"Yongtian"},{"last_name":"Huang","first_name":"Lingling","full_name":"Huang, Lingling"},{"id":"30525","first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","full_name":"Zentgraf, Thomas"}],"publication_identifier":{"issn":["2192-8614","2192-8606"]},"year":"2021","title":"A wavelength and polarization selective photon sieve for holographic applications","intvolume":"        10","publication_status":"published","date_updated":"2022-01-20T07:33:16Z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0440/html","open_access":"1"}],"doi":"10.1515/nanoph-2021-0440","citation":{"chicago":"Frese, Daniel, Basudeb Sain, Hongqiang Zhou, Yongtian Wang, Lingling Huang, and Thomas Zentgraf. “A Wavelength and Polarization Selective Photon Sieve for Holographic Applications.” <i>Nanophotonics</i> 10, no. 18 (2021): 4543–50. <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">https://doi.org/10.1515/nanoph-2021-0440</a>.","short":"D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, T. Zentgraf, Nanophotonics 10 (2021) 4543–4550.","apa":"Frese, D., Sain, B., Zhou, H., Wang, Y., Huang, L., &#38; Zentgraf, T. (2021). A wavelength and polarization selective photon sieve for holographic applications. <i>Nanophotonics</i>, <i>10</i>(18), 4543–4550. <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">https://doi.org/10.1515/nanoph-2021-0440</a>","ieee":"D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, and T. Zentgraf, “A wavelength and polarization selective photon sieve for holographic applications,” <i>Nanophotonics</i>, vol. 10, no. 18, pp. 4543–4550, 2021, doi: <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>.","ama":"Frese D, Sain B, Zhou H, Wang Y, Huang L, Zentgraf T. A wavelength and polarization selective photon sieve for holographic applications. <i>Nanophotonics</i>. 2021;10(18):4543-4550. doi:<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>","bibtex":"@article{Frese_Sain_Zhou_Wang_Huang_Zentgraf_2021, title={A wavelength and polarization selective photon sieve for holographic applications}, volume={10}, DOI={<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>}, number={18}, journal={Nanophotonics}, publisher={De Gruyter}, author={Frese, Daniel and Sain, Basudeb and Zhou, Hongqiang and Wang, Yongtian and Huang, Lingling and Zentgraf, Thomas}, year={2021}, pages={4543–4550} }","mla":"Frese, Daniel, et al. “A Wavelength and Polarization Selective Photon Sieve for Holographic Applications.” <i>Nanophotonics</i>, vol. 10, no. 18, De Gruyter, 2021, pp. 4543–50, doi:<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>."},"project":[{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"65","name":"TRR 142 - Subproject A8"}],"quality_controlled":"1","oa":"1","status":"public","funded_apc":"1","_id":"26987","publisher":"De Gruyter","page":"4543-4550","volume":10,"user_id":"30525"},{"publication_status":"published","date_updated":"2022-10-25T07:34:42Z","article_type":"original","intvolume":"         3","title":"Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides","year":"2021","author":[{"id":"33913","full_name":"Höpker, Jan Philipp","last_name":"Höpker","first_name":"Jan Philipp"},{"full_name":"Verma, Varun B","last_name":"Verma","first_name":"Varun B"},{"id":"46170","full_name":"Protte, Maximilian","last_name":"Protte","first_name":"Maximilian"},{"last_name":"Ricken","first_name":"Raimund","full_name":"Ricken, Raimund"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"id":"13244","full_name":"Eigner, Christof","first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"id":"40428","full_name":"Ebers, Lena","first_name":"Lena","last_name":"Ebers"},{"id":"48077","first_name":"Manfred","orcid":"0000-0002-6331-9348","last_name":"Hammer","full_name":"Hammer, Manfred"},{"id":"158","full_name":"Förstner, Jens","last_name":"Förstner","first_name":"Jens","orcid":"0000-0001-7059-9862"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Mirin, Richard P","first_name":"Richard P","last_name":"Mirin"},{"full_name":"Woo Nam, Sae","first_name":"Sae","last_name":"Woo Nam"},{"first_name":"Tim","last_name":"Bartley","full_name":"Bartley, Tim","id":"49683"}],"publication_identifier":{"issn":["2515-7647"]},"doi":"10.1088/2515-7647/ac105b","language":[{"iso":"eng"}],"abstract":[{"text":"We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently coupled photons of 1550 nm wavelength using bidirectional waveguide coupling for two orthogonal polarization directions. We investigate the internal detection efficiency as well as detector absorption using coupling-independent characterization measurements. Furthermore, we describe strategies to improve the yield and efficiency of these devices.","lang":"eng"}],"publication":"Journal of Physics: Photonics","type":"journal_article","department":[{"_id":"15"},{"_id":"61"},{"_id":"230"}],"file":[{"creator":"fossie","date_created":"2021-09-07T07:41:04Z","relation":"main_file","date_updated":"2021-09-07T07:41:04Z","file_name":"2021-07 Höpker J._Phys._Photonics_3_034022.pdf","file_size":1097820,"access_level":"open_access","file_id":"23825","content_type":"application/pdf"}],"date_created":"2021-09-03T08:04:06Z","has_accepted_license":"1","status":"public","user_id":"49683","ddc":["530"],"volume":3,"page":"034022","_id":"23728","project":[{"name":"TRR 142","_id":"53"}],"file_date_updated":"2021-09-07T07:41:04Z","citation":{"mla":"Höpker, Jan Philipp, et al. “Integrated Superconducting Nanowire Single-Photon Detectors on Titanium in-Diffused Lithium Niobate Waveguides.” <i>Journal of Physics: Photonics</i>, vol. 3, 2021, p. 034022, doi:<a href=\"https://doi.org/10.1088/2515-7647/ac105b\">10.1088/2515-7647/ac105b</a>.","bibtex":"@article{Höpker_Verma_Protte_Ricken_Quiring_Eigner_Ebers_Hammer_Förstner_Silberhorn_et al._2021, title={Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides}, volume={3}, DOI={<a href=\"https://doi.org/10.1088/2515-7647/ac105b\">10.1088/2515-7647/ac105b</a>}, journal={Journal of Physics: Photonics}, author={Höpker, Jan Philipp and Verma, Varun B and Protte, Maximilian and Ricken, Raimund and Quiring, Viktor and Eigner, Christof and Ebers, Lena and Hammer, Manfred and Förstner, Jens and Silberhorn, Christine and et al.}, year={2021}, pages={034022} }","ama":"Höpker JP, Verma VB, Protte M, et al. Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. <i>Journal of Physics: Photonics</i>. 2021;3:034022. doi:<a href=\"https://doi.org/10.1088/2515-7647/ac105b\">10.1088/2515-7647/ac105b</a>","ieee":"J. P. Höpker <i>et al.</i>, “Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides,” <i>Journal of Physics: Photonics</i>, vol. 3, p. 034022, 2021, doi: <a href=\"https://doi.org/10.1088/2515-7647/ac105b\">10.1088/2515-7647/ac105b</a>.","apa":"Höpker, J. P., Verma, V. B., Protte, M., Ricken, R., Quiring, V., Eigner, C., Ebers, L., Hammer, M., Förstner, J., Silberhorn, C., Mirin, R. P., Woo Nam, S., &#38; Bartley, T. (2021). Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. <i>Journal of Physics: Photonics</i>, <i>3</i>, 034022. <a href=\"https://doi.org/10.1088/2515-7647/ac105b\">https://doi.org/10.1088/2515-7647/ac105b</a>","chicago":"Höpker, Jan Philipp, Varun B Verma, Maximilian Protte, Raimund Ricken, Viktor Quiring, Christof Eigner, Lena Ebers, et al. “Integrated Superconducting Nanowire Single-Photon Detectors on Titanium in-Diffused Lithium Niobate Waveguides.” <i>Journal of Physics: Photonics</i> 3 (2021): 034022. <a href=\"https://doi.org/10.1088/2515-7647/ac105b\">https://doi.org/10.1088/2515-7647/ac105b</a>.","short":"J.P. Höpker, V.B. Verma, M. Protte, R. Ricken, V. Quiring, C. Eigner, L. Ebers, M. Hammer, J. Förstner, C. Silberhorn, R.P. Mirin, S. Woo Nam, T. Bartley, Journal of Physics: Photonics 3 (2021) 034022."},"oa":"1"},{"language":[{"iso":"eng"}],"doi":"10.1017/s1431927621013866","title":"Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks","year":"2021","author":[{"full_name":"Riedl, Thomas","last_name":"Riedl","first_name":"Thomas","id":"36950"},{"last_name":"Lindner","first_name":"Jörg","full_name":"Lindner, Jörg","id":"20797"}],"publication_identifier":{"issn":["1431-9276","1435-8115"]},"date_updated":"2023-01-10T12:11:24Z","publication_status":"published","intvolume":"        28","date_created":"2022-11-10T14:13:19Z","keyword":["Instrumentation"],"type":"journal_article","department":[{"_id":"15"},{"_id":"230"}],"issue":"1","publication":"Microscopy and Microanalysis","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>Colloidal nanosphere monolayers—used as a lithography mask for site-controlled material deposition or removal—offer the possibility of cost-effective patterning of large surface areas. In the present study, an automated analysis of scanning electron microscopy (SEM) images is described, which enables the recognition of the individual nanospheres in densely packed monolayers in order to perform a statistical quantification of the sphere size, mask opening size, and sphere-sphere separation distributions. Search algorithms based on Fourier transformation, cross-correlation, multiple-angle intensity profiling, and sphere edge point detection techniques allow for a sphere detection efficiency of at least 99.8%, even in the case of considerable sphere size variations. While the sphere positions and diameters are determined by fitting circles to the spheres edge points, the openings between sphere triples are detected by intensity thresholding. For the analyzed polystyrene sphere monolayers with sphere sizes between 220 and 600 nm and a diameter spread of around 3% coefficients of variation of 6.8–8.1% for the opening size are found. By correlating the mentioned size distributions, it is shown that, in this case, the dominant contribution to the opening size variation stems from nanometer-scale positional variations of the spheres.</jats:p>","lang":"eng"}],"page":"185-195","publisher":"Cambridge University Press (CUP)","_id":"34054","user_id":"77496","volume":28,"status":"public","citation":{"chicago":"Riedl, Thomas, and Jörg Lindner. “Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks.” <i>Microscopy and Microanalysis</i> 28, no. 1 (2021): 185–95. <a href=\"https://doi.org/10.1017/s1431927621013866\">https://doi.org/10.1017/s1431927621013866</a>.","short":"T. Riedl, J. Lindner, Microscopy and Microanalysis 28 (2021) 185–195.","apa":"Riedl, T., &#38; Lindner, J. (2021). Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks. <i>Microscopy and Microanalysis</i>, <i>28</i>(1), 185–195. <a href=\"https://doi.org/10.1017/s1431927621013866\">https://doi.org/10.1017/s1431927621013866</a>","ieee":"T. Riedl and J. Lindner, “Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks,” <i>Microscopy and Microanalysis</i>, vol. 28, no. 1, pp. 185–195, 2021, doi: <a href=\"https://doi.org/10.1017/s1431927621013866\">10.1017/s1431927621013866</a>.","ama":"Riedl T, Lindner J. Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks. <i>Microscopy and Microanalysis</i>. 2021;28(1):185-195. doi:<a href=\"https://doi.org/10.1017/s1431927621013866\">10.1017/s1431927621013866</a>","bibtex":"@article{Riedl_Lindner_2021, title={Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks}, volume={28}, DOI={<a href=\"https://doi.org/10.1017/s1431927621013866\">10.1017/s1431927621013866</a>}, number={1}, journal={Microscopy and Microanalysis}, publisher={Cambridge University Press (CUP)}, author={Riedl, Thomas and Lindner, Jörg}, year={2021}, pages={185–195} }","mla":"Riedl, Thomas, and Jörg Lindner. “Automated SEM Image Analysis of the Sphere Diameter, Sphere-Sphere Separation, and Opening Size Distributions of Nanosphere Lithography Masks.” <i>Microscopy and Microanalysis</i>, vol. 28, no. 1, Cambridge University Press (CUP), 2021, pp. 185–95, doi:<a href=\"https://doi.org/10.1017/s1431927621013866\">10.1017/s1431927621013866</a>."}}]