[{"status":"public","project":[{"grant_number":"PROFILNRW-2020-067","name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266"}],"date_created":"2024-02-13T13:03:01Z","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"publisher":"Optica Publishing Group","author":[{"first_name":"Jonas","full_name":"Babai-Hemati, Jonas","last_name":"Babai-Hemati"},{"first_name":"Felix","full_name":"vom Bruch, Felix","last_name":"vom Bruch","id":"71245"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"first_name":"Christine","full_name":"Silberhorn, Christine","last_name":"Silberhorn","id":"26263"}],"publication":"Optics Express","keyword":["Atomic and Molecular Physics","and Optics"],"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"216","title":"Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters","language":[{"iso":"eng"}],"type":"journal_article","year":"2024","citation":{"ama":"Babai-Hemati J, vom Bruch F, Herrmann H, Silberhorn C. Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. Published online 2024. doi:10.1364/oe.510319","apa":"Babai-Hemati, J., vom Bruch, F., Herrmann, H., & Silberhorn, C. (2024). Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. https://doi.org/10.1364/oe.510319","chicago":"Babai-Hemati, Jonas, Felix vom Bruch, Harald Herrmann, and Christine Silberhorn. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, 2024. https://doi.org/10.1364/oe.510319.","bibtex":"@article{Babai-Hemati_vom Bruch_Herrmann_Silberhorn_2024, title={Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters}, DOI={10.1364/oe.510319}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babai-Hemati, Jonas and vom Bruch, Felix and Herrmann, Harald and Silberhorn, Christine}, year={2024} }","mla":"Babai-Hemati, Jonas, et al. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, Optica Publishing Group, 2024, doi:10.1364/oe.510319.","short":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, C. Silberhorn, Optics Express (2024).","ieee":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, and C. Silberhorn, “Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters,” Optics Express, 2024, doi: 10.1364/oe.510319."},"doi":"10.1364/oe.510319","_id":"51339","date_updated":"2024-02-13T13:09:51Z"},{"year":"2024","citation":{"short":"F. Thiele, T. Hummel, N.A. Lange, F. Dreher, M. Protte, F. vom Bruch, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Materials for Quantum Technology 4 (2024).","ieee":"F. Thiele et al., “Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics,” Materials for Quantum Technology, vol. 4, no. 1, Art. no. 015402, 2024, doi: 10.1088/2633-4356/ad207d.","chicago":"Thiele, Frederik, Thomas Hummel, Nina Amelie Lange, Felix Dreher, Maximilian Protte, Felix vom Bruch, Sebastian Lengeling, et al. “Pyroelectric Influence on Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.” Materials for Quantum Technology 4, no. 1 (2024). https://doi.org/10.1088/2633-4356/ad207d.","ama":"Thiele F, Hummel T, Lange NA, et al. Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. Materials for Quantum Technology. 2024;4(1). doi:10.1088/2633-4356/ad207d","apa":"Thiele, F., Hummel, T., Lange, N. A., Dreher, F., Protte, M., Bruch, F. vom, Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2024). Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. Materials for Quantum Technology, 4(1), Article 015402. https://doi.org/10.1088/2633-4356/ad207d","mla":"Thiele, Frederik, et al. “Pyroelectric Influence on Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.” Materials for Quantum Technology, vol. 4, no. 1, 015402, IOP Publishing, 2024, doi:10.1088/2633-4356/ad207d.","bibtex":"@article{Thiele_Hummel_Lange_Dreher_Protte_Bruch_Lengeling_Herrmann_Eigner_Silberhorn_et al._2024, title={Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics}, volume={4}, DOI={10.1088/2633-4356/ad207d}, number={1015402}, journal={Materials for Quantum Technology}, publisher={IOP Publishing}, author={Thiele, Frederik and Hummel, Thomas and Lange, Nina Amelie and Dreher, Felix and Protte, Maximilian and Bruch, Felix vom and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and et al.}, year={2024} }"},"type":"journal_article","article_number":"015402","issue":"1","_id":"51356","intvolume":" 4","volume":4,"date_created":"2024-02-16T07:56:44Z","status":"public","keyword":["General Earth and Planetary Sciences","General Environmental Science"],"publication":"Materials for Quantum Technology","author":[{"id":"50819","last_name":"Thiele","full_name":"Thiele, Frederik","orcid":"0000-0003-0663-5587","first_name":"Frederik"},{"last_name":"Hummel","id":"83846","first_name":"Thomas","full_name":"Hummel, Thomas"},{"last_name":"Lange","id":"56843","first_name":"Nina Amelie","full_name":"Lange, Nina Amelie","orcid":"0000-0001-6624-7098"},{"full_name":"Dreher, Felix","first_name":"Felix","last_name":"Dreher"},{"last_name":"Protte","first_name":"Maximilian","full_name":"Protte, Maximilian"},{"first_name":"Felix vom","full_name":"Bruch, Felix vom","last_name":"Bruch"},{"first_name":"Sebastian","full_name":"Lengeling, Sebastian","last_name":"Lengeling","id":"44373"},{"last_name":"Herrmann","id":"216","first_name":"Harald","full_name":"Herrmann, Harald"},{"id":"13244","last_name":"Eigner","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"},{"id":"49683","last_name":"Bartley","full_name":"Bartley, Tim","first_name":"Tim"}],"publisher":"IOP Publishing","user_id":"50819","abstract":[{"lang":"eng","text":"Abstract\r\n Lithium niobate has emerged as a promising platform for integrated quantum optics, enabling efficient generation, manipulation, and detection of quantum states of light. However, integrating single-photon detectors requires cryogenic operating temperatures, since the best performing detectors are based on narrow superconducting wires. While previous studies have demonstrated the operation of quantum light sources and electro-optic modulators in LiNbO3 at cryogenic temperatures, the thermal transition between room temperature and cryogenic conditions introduces additional effects that can significantly influence device performance. In this paper, we investigate the generation of pyroelectric charges and their impact on the optical properties of lithium niobate waveguides when changing from room temperature to 25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate this with fast changes in the birefringence acquired through the Sénarmont-method. Both electrical and optical influence of the pyroelectric effect occur predominantly at temperatures above 100 K."}],"language":[{"iso":"eng"}],"doi":"10.1088/2633-4356/ad207d","date_updated":"2024-03-04T13:20:43Z","publication_status":"published","publication_identifier":{"issn":["2633-4356"]},"title":"Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics"},{"department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}],"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","language":[{"iso":"eng"}],"date_updated":"2023-07-05T07:58:31Z","doi":"10.1364/oe.484126","keyword":["Atomic and Molecular Physics","and Optics"],"publication":"Optics Express","publisher":"Optica Publishing Group","author":[{"full_name":"Babel, Silia","orcid":"https://orcid.org/0000-0002-1568-2580","first_name":"Silia","id":"63231","last_name":"Babel"},{"last_name":"Bollmers","id":"61375","first_name":"Laura","full_name":"Bollmers, Laura"},{"full_name":"Massaro, Marcello","orcid":"0000-0002-2539-7652","first_name":"Marcello","id":"59545","last_name":"Massaro"},{"orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong","first_name":"Kai Hong","id":"36389","last_name":"Luo"},{"full_name":"Stefszky, Michael","first_name":"Michael","id":"42777","last_name":"Stefszky"},{"id":"88928","last_name":"Pegoraro","full_name":"Pegoraro, Federico","first_name":"Federico"},{"full_name":"Held, Philip","first_name":"Philip","id":"68236","last_name":"Held"},{"last_name":"Herrmann","id":"216","first_name":"Harald","full_name":"Herrmann, Harald"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","last_name":"Eigner","id":"13244"},{"full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","id":"27150","last_name":"Brecht"},{"last_name":"Padberg","id":"40300","first_name":"Laura","full_name":"Padberg, Laura"},{"first_name":"Christine","full_name":"Silberhorn, Christine","last_name":"Silberhorn","id":"26263"}],"volume":31,"date_created":"2023-07-03T14:08:36Z","status":"public","abstract":[{"text":"Interference between single photons is key for many quantum optics experiments and applications in quantum technologies, such as quantum communication or computation. It is advantageous to operate the systems at telecommunication wavelengths and to integrate the setups for these applications in order to improve stability, compactness and scalability. A new promising material platform for integrated quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel (HOM) interference between telecom photons from an engineered parametric down-conversion source in an LNOI directional coupler. The coupler has been designed and fabricated in house and provides close to perfect balanced beam splitting. We obtain a raw HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and in good agreement with off-chip measurements. This lays the foundation for more sophisticated quantum experiments in LNOI.","lang":"eng"}],"user_id":"63231","citation":{"ieee":"S. Babel et al., “Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler,” Optics Express, vol. 31, no. 14, Art. no. 23140, 2023, doi: 10.1364/oe.484126.","short":"S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P. Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express 31 (2023).","mla":"Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” Optics Express, vol. 31, no. 14, 23140, Optica Publishing Group, 2023, doi:10.1364/oe.484126.","bibtex":"@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler}, volume={31}, DOI={10.1364/oe.484126}, number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }","chicago":"Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky, Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.484126.","ama":"Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. Optics Express. 2023;31(14). doi:10.1364/oe.484126","apa":"Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F., Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., & Silberhorn, C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. Optics Express, 31(14), Article 23140. https://doi.org/10.1364/oe.484126"},"type":"journal_article","year":"2023","intvolume":" 31","_id":"45850","article_number":"23140","issue":"14"},{"article_type":"original","abstract":[{"lang":"eng","text":"This work reports a fully guided setup for single-mode squeezing on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous-wave laser beam is delivered and the squeezed field is collected by single-mode fibers; up to −3.17(9) dB of useful squeezing is available in fibers. To showcase the usefulness of such a fiber-coupled device, we applied the generated squeezed light in a fiber-based phase sensing experiment, showing a quantum enhancement in the signal-to-noise ratio of 0.35 dB. Moreover, our investigation of the effect of photorefraction on the cavity resonance condition suggests that it causes system instabilities at high powers."}],"user_id":"216","publisher":"Optica Publishing Group","author":[{"last_name":"Domeneguetti","full_name":"Domeneguetti, Renato","first_name":"Renato"},{"id":"42777","last_name":"Stefszky","full_name":"Stefszky, Michael","first_name":"Michael"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"id":"26263","last_name":"Silberhorn","full_name":"Silberhorn, Christine","first_name":"Christine"},{"last_name":"Andersen","first_name":"Ulrik L.","full_name":"Andersen, Ulrik L."},{"full_name":"Neergaard-Nielsen, Jonas S.","first_name":"Jonas S.","last_name":"Neergaard-Nielsen"},{"last_name":"Gehring","first_name":"Tobias","full_name":"Gehring, Tobias"}],"quality_controlled":"1","publication":"Optics Letters","keyword":["Atomic and Molecular Physics","and Optics"],"status":"public","date_created":"2023-07-25T10:35:24Z","volume":48,"intvolume":" 48","_id":"46138","issue":"11","article_number":"2999","year":"2023","type":"journal_article","citation":{"chicago":"Domeneguetti, Renato, Michael Stefszky, Harald Herrmann, Christine Silberhorn, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen, and Tobias Gehring. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” Optics Letters 48, no. 11 (2023). https://doi.org/10.1364/ol.486654.","apa":"Domeneguetti, R., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., & Gehring, T. (2023). Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. Optics Letters, 48(11), Article 2999. https://doi.org/10.1364/ol.486654","ama":"Domeneguetti R, Stefszky M, Herrmann H, et al. Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. Optics Letters. 2023;48(11). doi:10.1364/ol.486654","mla":"Domeneguetti, Renato, et al. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” Optics Letters, vol. 48, no. 11, 2999, Optica Publishing Group, 2023, doi:10.1364/ol.486654.","bibtex":"@article{Domeneguetti_Stefszky_Herrmann_Silberhorn_Andersen_Neergaard-Nielsen_Gehring_2023, title={Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing}, volume={48}, DOI={10.1364/ol.486654}, number={112999}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Domeneguetti, Renato and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas S. and Gehring, Tobias}, year={2023} }","short":"R. Domeneguetti, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, Optics Letters 48 (2023).","ieee":"R. Domeneguetti et al., “Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing,” Optics Letters, vol. 48, no. 11, Art. no. 2999, 2023, doi: 10.1364/ol.486654."},"title":"Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing","department":[{"_id":"230"},{"_id":"623"},{"_id":"288"}],"project":[{"_id":"218","name":"UNIQORN: UNIQORN - Affordable Quantum Communication for Everyone - EU Quantum Flagship Project"}],"publication_status":"published","publication_identifier":{"issn":["0146-9592","1539-4794"]},"date_updated":"2023-07-25T10:58:05Z","doi":"10.1364/ol.486654","language":[{"iso":"eng"}]},{"date_created":"2023-08-23T07:20:06Z","status":"public","volume":31,"keyword":["Atomic and Molecular Physics","and Optics"],"publication":"Optics Express","publisher":"Optica Publishing Group","author":[{"first_name":"Christian","full_name":"Kießler, Christian","last_name":"Kießler","id":"44252"},{"last_name":"Conradi","first_name":"Hauke","full_name":"Conradi, Hauke"},{"first_name":"Moritz","full_name":"Kleinert, Moritz","last_name":"Kleinert"},{"last_name":"Quiring","full_name":"Quiring, Viktor","first_name":"Viktor"},{"last_name":"Herrmann","id":"216","first_name":"Harald","full_name":"Herrmann, Harald"},{"id":"26263","last_name":"Silberhorn","full_name":"Silberhorn, Christine","first_name":"Christine"}],"user_id":"44252","abstract":[{"text":"A reliable, but cost-effective generation of single-photon states is key for practical quantum communication systems. For real-world deployment, waveguide sources offer optimum compatibility with fiber networks and can be embedded in hybrid integrated modules. Here, we present what we believe to be the first chip-size fully integrated fiber-coupled heralded single photon source (HSPS) module based on a hybrid integration of a nonlinear lithium niobate waveguide into a polymer board. Photon pairs at 810 nm (signal) and 1550 nm (idler) are generated via parametric down-conversion pumped at 532 nm in the LiNbO3 waveguide. The pairs are split in the polymer board and routed to separate output ports. The module has a size of (2 × 1) cm^2 and is fully fiber-coupled with one pump input fiber and two output fibers. We measure a heralded second-order correlation function of g_h(2)=0.05 with a heralding efficiency of η_h=3.5% at low pump powers","lang":"eng"}],"article_type":"original","type":"journal_article","citation":{"apa":"Kießler, C., Conradi, H., Kleinert, M., Quiring, V., Herrmann, H., & Silberhorn, C. (2023). Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. Optics Express, 31(14), Article 22685. https://doi.org/10.1364/oe.487581","ama":"Kießler C, Conradi H, Kleinert M, Quiring V, Herrmann H, Silberhorn C. Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. Optics Express. 2023;31(14). doi:10.1364/oe.487581","chicago":"Kießler, Christian, Hauke Conradi, Moritz Kleinert, Viktor Quiring, Harald Herrmann, and Christine Silberhorn. “Fiber-Coupled Plug-and-Play Heralded Single Photon Source Based on Ti:LiNbO3 and Polymer Technology.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.487581.","bibtex":"@article{Kießler_Conradi_Kleinert_Quiring_Herrmann_Silberhorn_2023, title={Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology}, volume={31}, DOI={10.1364/oe.487581}, number={1422685}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Kießler, Christian and Conradi, Hauke and Kleinert, Moritz and Quiring, Viktor and Herrmann, Harald and Silberhorn, Christine}, year={2023} }","mla":"Kießler, Christian, et al. “Fiber-Coupled Plug-and-Play Heralded Single Photon Source Based on Ti:LiNbO3 and Polymer Technology.” Optics Express, vol. 31, no. 14, 22685, Optica Publishing Group, 2023, doi:10.1364/oe.487581.","short":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express 31 (2023).","ieee":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, and C. Silberhorn, “Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology,” Optics Express, vol. 31, no. 14, Art. no. 22685, 2023, doi: 10.1364/oe.487581."},"year":"2023","issue":"14","article_number":"22685","_id":"46644","intvolume":" 31","publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","title":"Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology","language":[{"iso":"eng"}],"doi":"10.1364/oe.487581","date_updated":"2023-08-23T07:25:37Z"},{"department":[{"_id":"15"},{"_id":"230"},{"_id":"623"}],"publication_identifier":{"issn":["2515-7647"]},"publication_status":"published","title":"Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides","language":[{"iso":"eng"}],"date_updated":"2023-01-12T15:16:35Z","doi":"10.1088/2515-7647/ac6c63","author":[{"id":"50819","last_name":"Thiele","full_name":"Thiele, Frederik","orcid":"0000-0003-0663-5587","first_name":"Frederik"},{"first_name":"Felix","full_name":"vom Bruch, Felix","last_name":"vom Bruch","id":"71245"},{"full_name":"Brockmeier, Julian","first_name":"Julian","id":"44807","last_name":"Brockmeier"},{"last_name":"Protte","id":"46170","first_name":"Maximilian","full_name":"Protte, Maximilian"},{"id":"83846","last_name":"Hummel","full_name":"Hummel, Thomas","first_name":"Thomas"},{"last_name":"Ricken","full_name":"Ricken, Raimund","first_name":"Raimund"},{"last_name":"Quiring","first_name":"Viktor","full_name":"Quiring, Viktor"},{"first_name":"Sebastian","full_name":"Lengeling, Sebastian","last_name":"Lengeling","id":"44373"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","first_name":"Christof","id":"13244","last_name":"Eigner"},{"full_name":"Silberhorn, Christine","first_name":"Christine","id":"26263","last_name":"Silberhorn"},{"id":"49683","last_name":"Bartley","full_name":"Bartley, Tim","first_name":"Tim"}],"publisher":"IOP Publishing","keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"publication":"Journal of Physics: Photonics","status":"public","date_created":"2022-10-11T07:14:40Z","volume":4,"abstract":[{"text":"Abstract\r\n Lithium niobate is a promising platform for integrated quantum optics. In this platform, we aim to efficiently manipulate and detect quantum states by combining superconducting single photon detectors and modulators. The cryogenic operation of a superconducting single photon detector dictates the optimisation of the electro-optic modulators under the same operating conditions. To that end, we characterise a phase modulator, directional coupler, and polarisation converter at both ambient and cryogenic temperatures. The operation voltage \r\n \r\n \r\n \r\n V\r\n \r\n π\r\n \r\n /\r\n \r\n 2\r\n \r\n \r\n \r\n \r\n of these modulators increases, due to the decrease in the electro-optic effect, by 74% for the phase modulator, 84% for the directional coupler and 35% for the polarisation converter below 8.5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n . The phase modulator preserves its broadband nature and modulates light in the characterised wavelength range. The unbiased bar state of the directional coupler changed by a wavelength shift of 85\r\n \r\n \r\n \r\n n\r\n m\r\n \r\n \r\n \r\n while cooling the device down to 5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n . The polarisation converter uses periodic poling to phasematch the two orthogonal polarisations. The phasematched wavelength of the utilised poling changes by 112\r\n \r\n \r\n \r\n n\r\n m\r\n \r\n \r\n \r\n when cooling to 5\r\n \r\n \r\n \r\n K\r\n \r\n \r\n \r\n .","lang":"eng"}],"user_id":"83846","citation":{"mla":"Thiele, Frederik, et al. “Cryogenic Electro-Optic Modulation in Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics, vol. 4, no. 3, 034004, IOP Publishing, 2022, doi:10.1088/2515-7647/ac6c63.","bibtex":"@article{Thiele_vom Bruch_Brockmeier_Protte_Hummel_Ricken_Quiring_Lengeling_Herrmann_Eigner_et al._2022, title={Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides}, volume={4}, DOI={10.1088/2515-7647/ac6c63}, number={3034004}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Thiele, Frederik and vom Bruch, Felix and Brockmeier, Julian and Protte, Maximilian and Hummel, Thomas and Ricken, Raimund and Quiring, Viktor and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and et al.}, year={2022} }","chicago":"Thiele, Frederik, Felix vom Bruch, Julian Brockmeier, Maximilian Protte, Thomas Hummel, Raimund Ricken, Viktor Quiring, et al. “Cryogenic Electro-Optic Modulation in Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics 4, no. 3 (2022). https://doi.org/10.1088/2515-7647/ac6c63.","apa":"Thiele, F., vom Bruch, F., Brockmeier, J., Protte, M., Hummel, T., Ricken, R., Quiring, V., Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2022). Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics, 4(3), Article 034004. https://doi.org/10.1088/2515-7647/ac6c63","ama":"Thiele F, vom Bruch F, Brockmeier J, et al. Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics. 2022;4(3). doi:10.1088/2515-7647/ac6c63","ieee":"F. Thiele et al., “Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides,” Journal of Physics: Photonics, vol. 4, no. 3, Art. no. 034004, 2022, doi: 10.1088/2515-7647/ac6c63.","short":"F. Thiele, F. vom Bruch, J. Brockmeier, M. Protte, T. Hummel, R. Ricken, V. Quiring, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Journal of Physics: Photonics 4 (2022)."},"year":"2022","type":"journal_article","_id":"33672","intvolume":" 4","issue":"3","article_number":"034004"},{"date_created":"2023-01-24T07:41:40Z","status":"public","volume":40,"publication":"Journal of Lightwave Technology","keyword":["General Engineering"],"author":[{"last_name":"Trenti","full_name":"Trenti, Alessandro","first_name":"Alessandro"},{"last_name":"Achleitner","full_name":"Achleitner, Martin","first_name":"Martin"},{"last_name":"Prawits","first_name":"Florian","full_name":"Prawits, Florian"},{"last_name":"Schrenk","first_name":"Bernhard","full_name":"Schrenk, Bernhard"},{"last_name":"Conradi","first_name":"Hauke","full_name":"Conradi, Hauke"},{"full_name":"Kleinert, Moritz","first_name":"Moritz","last_name":"Kleinert"},{"last_name":"Incoronato","first_name":"Alfonso","full_name":"Incoronato, Alfonso"},{"last_name":"Zanetto","first_name":"Francesco","full_name":"Zanetto, Francesco"},{"last_name":"Zappa","full_name":"Zappa, Franco","first_name":"Franco"},{"full_name":"Luch, Ilaria Di","first_name":"Ilaria Di","last_name":"Luch"},{"first_name":"Ozan","full_name":"Cirkinoglu, Ozan","last_name":"Cirkinoglu"},{"last_name":"Leijtens","full_name":"Leijtens, Xaveer","first_name":"Xaveer"},{"last_name":"Bonardi","full_name":"Bonardi, Antonio","first_name":"Antonio"},{"last_name":"Bruynsteen","full_name":"Bruynsteen, Cedric","first_name":"Cedric"},{"full_name":"Yin, Xin","first_name":"Xin","last_name":"Yin"},{"id":"44252","last_name":"Kießler","full_name":"Kießler, Christian","first_name":"Christian"},{"last_name":"Herrmann","id":"216","first_name":"Harald","full_name":"Herrmann, Harald"},{"first_name":"Christine","full_name":"Silberhorn, Christine","last_name":"Silberhorn","id":"26263"},{"full_name":"Bozzio, Mathieu","first_name":"Mathieu","last_name":"Bozzio"},{"full_name":"Walther, Philip","first_name":"Philip","last_name":"Walther"},{"full_name":"Thiel, Hannah C.","first_name":"Hannah C.","last_name":"Thiel"},{"last_name":"Weihs","full_name":"Weihs, Gregor","first_name":"Gregor"},{"full_name":"Hubel, Hannes","first_name":"Hannes","last_name":"Hubel"}],"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","user_id":"44252","page":"7485-7497","type":"journal_article","citation":{"short":"A. Trenti, M. Achleitner, F. Prawits, B. Schrenk, H. Conradi, M. Kleinert, A. Incoronato, F. Zanetto, F. Zappa, I.D. Luch, O. Cirkinoglu, X. Leijtens, A. Bonardi, C. Bruynsteen, X. Yin, C. Kießler, H. Herrmann, C. Silberhorn, M. Bozzio, P. Walther, H.C. Thiel, G. Weihs, H. Hubel, Journal of Lightwave Technology 40 (2022) 7485–7497.","ieee":"A. Trenti et al., “On-Chip Quantum Communication Devices,” Journal of Lightwave Technology, vol. 40, no. 23, pp. 7485–7497, 2022, doi: 10.1109/jlt.2022.3201389.","chicago":"Trenti, Alessandro, Martin Achleitner, Florian Prawits, Bernhard Schrenk, Hauke Conradi, Moritz Kleinert, Alfonso Incoronato, et al. “On-Chip Quantum Communication Devices.” Journal of Lightwave Technology 40, no. 23 (2022): 7485–97. https://doi.org/10.1109/jlt.2022.3201389.","apa":"Trenti, A., Achleitner, M., Prawits, F., Schrenk, B., Conradi, H., Kleinert, M., Incoronato, A., Zanetto, F., Zappa, F., Luch, I. D., Cirkinoglu, O., Leijtens, X., Bonardi, A., Bruynsteen, C., Yin, X., Kießler, C., Herrmann, H., Silberhorn, C., Bozzio, M., … Hubel, H. (2022). On-Chip Quantum Communication Devices. Journal of Lightwave Technology, 40(23), 7485–7497. https://doi.org/10.1109/jlt.2022.3201389","ama":"Trenti A, Achleitner M, Prawits F, et al. On-Chip Quantum Communication Devices. Journal of Lightwave Technology. 2022;40(23):7485-7497. doi:10.1109/jlt.2022.3201389","mla":"Trenti, Alessandro, et al. “On-Chip Quantum Communication Devices.” Journal of Lightwave Technology, vol. 40, no. 23, Institute of Electrical and Electronics Engineers (IEEE), 2022, pp. 7485–97, doi:10.1109/jlt.2022.3201389.","bibtex":"@article{Trenti_Achleitner_Prawits_Schrenk_Conradi_Kleinert_Incoronato_Zanetto_Zappa_Luch_et al._2022, title={On-Chip Quantum Communication Devices}, volume={40}, DOI={10.1109/jlt.2022.3201389}, number={23}, journal={Journal of Lightwave Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Trenti, Alessandro and Achleitner, Martin and Prawits, Florian and Schrenk, Bernhard and Conradi, Hauke and Kleinert, Moritz and Incoronato, Alfonso and Zanetto, Francesco and Zappa, Franco and Luch, Ilaria Di and et al.}, year={2022}, pages={7485–7497} }"},"year":"2022","issue":"23","_id":"38532","intvolume":" 40","publication_status":"published","publication_identifier":{"issn":["0733-8724","1558-2213"]},"title":"On-Chip Quantum Communication Devices","language":[{"iso":"eng"}],"doi":"10.1109/jlt.2022.3201389","date_updated":"2023-01-26T09:10:58Z"},{"user_id":"33913","title":"Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides","publication":"Physical Review Applied","department":[{"_id":"230"}],"author":[{"first_name":"Moritz","full_name":"Bartnick, Moritz","last_name":"Bartnick"},{"first_name":"Matteo","full_name":"Santandrea, Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea","id":"55095"},{"id":"33913","last_name":"Höpker","full_name":"Höpker, Jan Philipp","first_name":"Jan Philipp"},{"last_name":"Thiele","id":"50819","first_name":"Frederik","orcid":"0000-0003-0663-5587","full_name":"Thiele, Frederik"},{"last_name":"Ricken","full_name":"Ricken, Raimund","first_name":"Raimund"},{"full_name":"Quiring, Viktor","first_name":"Viktor","last_name":"Quiring"},{"id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","first_name":"Christof"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"id":"26263","last_name":"Silberhorn","full_name":"Silberhorn, Christine","first_name":"Christine"},{"last_name":"Bartley","id":"49683","first_name":"Tim","full_name":"Bartley, Tim"}],"date_created":"2021-10-15T09:24:10Z","status":"public","publication_identifier":{"issn":["2331-7019"]},"publication_status":"published","date_updated":"2023-01-12T13:39:50Z","_id":"26221","doi":"10.1103/physrevapplied.15.024028","language":[{"iso":"eng"}],"year":"2021","citation":{"bibtex":"@article{Bartnick_Santandrea_Höpker_Thiele_Ricken_Quiring_Eigner_Herrmann_Silberhorn_Bartley_2021, title={Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides}, DOI={10.1103/physrevapplied.15.024028}, journal={Physical Review Applied}, author={Bartnick, Moritz and Santandrea, Matteo and Höpker, Jan Philipp and Thiele, Frederik and Ricken, Raimund and Quiring, Viktor and Eigner, Christof and Herrmann, Harald and Silberhorn, Christine and Bartley, Tim}, year={2021} }","mla":"Bartnick, Moritz, et al. “Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides.” Physical Review Applied, 2021, doi:10.1103/physrevapplied.15.024028.","ama":"Bartnick M, Santandrea M, Höpker JP, et al. Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides. Physical Review Applied. Published online 2021. doi:10.1103/physrevapplied.15.024028","apa":"Bartnick, M., Santandrea, M., Höpker, J. P., Thiele, F., Ricken, R., Quiring, V., Eigner, C., Herrmann, H., Silberhorn, C., & Bartley, T. (2021). Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides. Physical Review Applied. https://doi.org/10.1103/physrevapplied.15.024028","chicago":"Bartnick, Moritz, Matteo Santandrea, Jan Philipp Höpker, Frederik Thiele, Raimund Ricken, Viktor Quiring, Christof Eigner, Harald Herrmann, Christine Silberhorn, and Tim Bartley. “Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides.” Physical Review Applied, 2021. https://doi.org/10.1103/physrevapplied.15.024028.","ieee":"M. Bartnick et al., “Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides,” Physical Review Applied, 2021, doi: 10.1103/physrevapplied.15.024028.","short":"M. Bartnick, M. Santandrea, J.P. Höpker, F. Thiele, R. Ricken, V. Quiring, C. Eigner, H. Herrmann, C. Silberhorn, T. Bartley, Physical Review Applied (2021)."},"type":"journal_article"},{"date_updated":"2023-01-26T09:10:44Z","_id":"39027","citation":{"ieee":"R. R. Domeneguetti et al., “Nonlinear waveguides for integrated quantum light source,” in 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, 2021, p. eb_4_1.","short":"R.R. Domeneguetti, H. Conradi, M. Kleinert, C. Kießler, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, in: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, Optica Publishing Group, 2021, p. eb_4_1.","mla":"Domeneguetti, Renato R., et al. “Nonlinear Waveguides for Integrated Quantum Light Source.” 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, Optica Publishing Group, 2021, p. eb_4_1.","bibtex":"@inproceedings{Domeneguetti_Conradi_Kleinert_Kießler_Stefszky_Herrmann_Silberhorn_Andersen_Neergaard-Nielsen_Gehring_2021, title={Nonlinear waveguides for integrated quantum light source}, booktitle={2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference}, publisher={Optica Publishing Group}, author={Domeneguetti, Renato R. and Conradi, Hauke and Kleinert, Moritz and Kießler, Christian and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas Schou and Gehring, Tobias}, year={2021}, pages={eb_4_1} }","chicago":"Domeneguetti, Renato R., Hauke Conradi, Moritz Kleinert, Christian Kießler, Michael Stefszky, Harald Herrmann, Christine Silberhorn, Ulrik L. Andersen, Jonas Schou Neergaard-Nielsen, and Tobias Gehring. “Nonlinear Waveguides for Integrated Quantum Light Source.” In 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, eb_4_1. Optica Publishing Group, 2021.","ama":"Domeneguetti RR, Conradi H, Kleinert M, et al. Nonlinear waveguides for integrated quantum light source. In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference. Optica Publishing Group; 2021:eb_4_1.","apa":"Domeneguetti, R. R., Conradi, H., Kleinert, M., Kießler, C., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., & Gehring, T. (2021). Nonlinear waveguides for integrated quantum light source. 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, eb_4_1."},"year":"2021","type":"conference","page":"eb_4_1","language":[{"iso":"eng"}],"title":"Nonlinear waveguides for integrated quantum light source","user_id":"44252","abstract":[{"lang":"eng","text":"We experimentally investigate the generation of continuous-wave optical squeezing from a titanium-indiffused lithium niobate waveguide resonator at low and high frequencies. The device promises integration with different platform chips for more complex optical systems."}],"status":"public","date_created":"2023-01-24T08:06:33Z","publisher":"Optica Publishing Group","author":[{"last_name":"Domeneguetti","full_name":"Domeneguetti, Renato R.","first_name":"Renato R."},{"first_name":"Hauke","full_name":"Conradi, Hauke","last_name":"Conradi"},{"first_name":"Moritz","full_name":"Kleinert, Moritz","last_name":"Kleinert"},{"full_name":"Kießler, Christian","first_name":"Christian","id":"44252","last_name":"Kießler"},{"last_name":"Stefszky","id":"42777","first_name":"Michael","full_name":"Stefszky, Michael"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"},{"full_name":"Andersen, Ulrik L.","first_name":"Ulrik L.","last_name":"Andersen"},{"first_name":"Jonas Schou","full_name":"Neergaard-Nielsen, Jonas Schou","last_name":"Neergaard-Nielsen"},{"last_name":"Gehring","first_name":"Tobias","full_name":"Gehring, Tobias"}],"publication":"2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference","keyword":["Optical systems","Polymer waveguides","Quantum key distribution","Quantum light sources","Squeezed states","Waveguides"]},{"abstract":[{"text":"We present a frequency multimode integrated SU (1,1) interferometer with a polarization converter and strong signal-idler photon correlations. Phase sensitivity below the shot noise limit is demonstrated, various filtering and seeding strategies are discussed.","lang":"eng"}],"user_id":"16199","title":"Multimode integrated SU(1,1) interferometer","publication":"Conference on Lasers and Electro-Optics","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"230"},{"_id":"288"},{"_id":"429"}],"publisher":"Optica Publishing Group","author":[{"first_name":"A.","full_name":"Ferreri, A.","last_name":"Ferreri"},{"last_name":"Santandrea","id":"55095","first_name":"Matteo","full_name":"Santandrea, Matteo","orcid":"0000-0001-5718-358X"},{"id":"42777","last_name":"Stefszky","full_name":"Stefszky, Michael","first_name":"Michael"},{"orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong","first_name":"Kai Hong","id":"36389","last_name":"Luo"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"full_name":"Silberhorn, Christine","first_name":"Christine","id":"26263","last_name":"Silberhorn"},{"id":"60286","last_name":"Sharapova","full_name":"Sharapova, Polina","first_name":"Polina"}],"date_created":"2023-01-26T13:57:47Z","project":[{"_id":"53","name":"TRR 142: TRR 142"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"name":"TRR 142 - C2: TRR 142 - Subproject C2","_id":"72"}],"status":"public","publication_status":"published","_id":"40374","date_updated":"2023-01-26T14:01:03Z","doi":"10.1364/cleo_qels.2021.ftu1n.6","language":[{"iso":"eng"}],"citation":{"ieee":"A. Ferreri et al., “Multimode integrated SU(1,1) interferometer,” 2021, doi: 10.1364/cleo_qels.2021.ftu1n.6.","short":"A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P. Sharapova, in: Conference on Lasers and Electro-Optics, Optica Publishing Group, 2021.","bibtex":"@inproceedings{Ferreri_Santandrea_Stefszky_Luo_Herrmann_Silberhorn_Sharapova_2021, title={Multimode integrated SU(1,1) interferometer}, DOI={10.1364/cleo_qels.2021.ftu1n.6}, booktitle={Conference on Lasers and Electro-Optics}, publisher={Optica Publishing Group}, author={Ferreri, A. and Santandrea, Matteo and Stefszky, Michael and Luo, Kai Hong and Herrmann, Harald and Silberhorn, Christine and Sharapova, Polina}, year={2021} }","mla":"Ferreri, A., et al. “Multimode Integrated SU(1,1) Interferometer.” Conference on Lasers and Electro-Optics, Optica Publishing Group, 2021, doi:10.1364/cleo_qels.2021.ftu1n.6.","chicago":"Ferreri, A., Matteo Santandrea, Michael Stefszky, Kai Hong Luo, Harald Herrmann, Christine Silberhorn, and Polina Sharapova. “Multimode Integrated SU(1,1) Interferometer.” In Conference on Lasers and Electro-Optics. Optica Publishing Group, 2021. https://doi.org/10.1364/cleo_qels.2021.ftu1n.6.","apa":"Ferreri, A., Santandrea, M., Stefszky, M., Luo, K. H., Herrmann, H., Silberhorn, C., & Sharapova, P. (2021). Multimode integrated SU(1,1) interferometer. Conference on Lasers and Electro-Optics. https://doi.org/10.1364/cleo_qels.2021.ftu1n.6","ama":"Ferreri A, Santandrea M, Stefszky M, et al. Multimode integrated SU(1,1) interferometer. In: Conference on Lasers and Electro-Optics. Optica Publishing Group; 2021. doi:10.1364/cleo_qels.2021.ftu1n.6"},"year":"2021","type":"conference"},{"publication":"Quantum","author":[{"last_name":"Ferreri","id":"65609","first_name":"Alessandro","full_name":"Ferreri, Alessandro"},{"id":"55095","last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","first_name":"Matteo"},{"last_name":"Stefszky","id":"42777","first_name":"Michael","full_name":"Stefszky, Michael"},{"last_name":"Luo","id":"36389","first_name":"Kai Hong","orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"},{"id":"60286","last_name":"Sharapova","full_name":"Sharapova, Polina R.","first_name":"Polina R."}],"project":[{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"}],"date_created":"2021-10-12T08:46:46Z","status":"public","publication_status":"published","publication_identifier":{"issn":["2521-327X"]},"abstract":[{"lang":"eng","text":"Nonlinear SU(1,1) interferometers are fruitful and promising tools for spectral engineering and precise measurements with phase sensitivity below the classical bound. Such interferometers have been successfully realized in bulk and fiber-based configurations. However, rapidly developing integrated technologies provide higher efficiencies, smaller footprints, and pave the way to quantum-enhanced on-chip interferometry. In this work, we theoretically realised an integrated architecture of the multimode SU(1,1) interferometer which can be applied to various integrated platforms. The presented interferometer includes a polarization converter between two photon sources and utilizes a continuous-wave (CW) pump. Based on the potassium titanyl phosphate (KTP) platform, we show that this configuration results in almost perfect destructive interference at the output and supersensitivity regions below the classical limit. In addition, we discuss the fundamental difference between single-mode and highly multimode SU(1,1) interferometers in the properties of phase sensitivity and its limits. Finally, we explore how to improve the phase sensitivity by filtering the output radiation and using different seeding states in different modes with various detection strategies."}],"user_id":"14931","title":"Spectrally multimode integrated SU(1,1) interferometer","language":[{"iso":"eng"}],"citation":{"mla":"Ferreri, Alessandro, et al. “Spectrally Multimode Integrated SU(1,1) Interferometer.” Quantum, 461, 2021, doi:10.22331/q-2021-05-27-461.","bibtex":"@article{Ferreri_Santandrea_Stefszky_Luo_Herrmann_Silberhorn_Sharapova_2021, title={Spectrally multimode integrated SU(1,1) interferometer}, DOI={10.22331/q-2021-05-27-461}, number={461}, journal={Quantum}, author={Ferreri, Alessandro and Santandrea, Matteo and Stefszky, Michael and Luo, Kai Hong and Herrmann, Harald and Silberhorn, Christine and Sharapova, Polina R.}, year={2021} }","chicago":"Ferreri, Alessandro, Matteo Santandrea, Michael Stefszky, Kai Hong Luo, Harald Herrmann, Christine Silberhorn, and Polina R. Sharapova. “Spectrally Multimode Integrated SU(1,1) Interferometer.” Quantum, 2021. https://doi.org/10.22331/q-2021-05-27-461.","apa":"Ferreri, A., Santandrea, M., Stefszky, M., Luo, K. H., Herrmann, H., Silberhorn, C., & Sharapova, P. R. (2021). Spectrally multimode integrated SU(1,1) interferometer. Quantum, Article 461. https://doi.org/10.22331/q-2021-05-27-461","ama":"Ferreri A, Santandrea M, Stefszky M, et al. Spectrally multimode integrated SU(1,1) interferometer. Quantum. Published online 2021. doi:10.22331/q-2021-05-27-461","ieee":"A. Ferreri et al., “Spectrally multimode integrated SU(1,1) interferometer,” Quantum, Art. no. 461, 2021, doi: 10.22331/q-2021-05-27-461.","short":"A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P.R. Sharapova, Quantum (2021)."},"year":"2021","type":"journal_article","_id":"26077","date_updated":"2023-02-10T16:12:40Z","doi":"10.22331/q-2021-05-27-461","article_number":"461"},{"department":[{"_id":"15"},{"_id":"170"},{"_id":"569"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"publication":"Physical Review A","author":[{"id":"36389","last_name":"Luo","full_name":"Luo, Kai Hong","orcid":"0000-0003-1008-4976","first_name":"Kai Hong"},{"orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","first_name":"Matteo","id":"55095","last_name":"Santandrea"},{"first_name":"Michael","full_name":"Stefszky, Michael","last_name":"Stefszky","id":"42777"},{"first_name":"Jan","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","last_name":"Sperling","id":"75127"},{"last_name":"Massaro","id":"59545","first_name":"Marcello","full_name":"Massaro, Marcello","orcid":"0000-0002-2539-7652"},{"first_name":"Alessandro","full_name":"Ferreri, Alessandro","last_name":"Ferreri","id":"65609"},{"first_name":"Polina","full_name":"Sharapova, Polina","last_name":"Sharapova","id":"60286"},{"last_name":"Herrmann","id":"216","first_name":"Harald","full_name":"Herrmann, Harald"},{"first_name":"Christine","full_name":"Silberhorn, Christine","last_name":"Silberhorn","id":"26263"}],"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"},{"_id":"72","name":"TRR 142 - C2: TRR 142 - Subproject C2"}],"date_created":"2021-10-26T12:42:16Z","status":"public","publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"user_id":"16199","title":"Quantum optical coherence: From linear to nonlinear interferometers","language":[{"iso":"eng"}],"citation":{"mla":"Luo, Kai Hong, et al. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.” Physical Review A, 2021, doi:10.1103/physreva.104.043707.","bibtex":"@article{Luo_Santandrea_Stefszky_Sperling_Massaro_Ferreri_Sharapova_Herrmann_Silberhorn_2021, title={Quantum optical coherence: From linear to nonlinear interferometers}, DOI={10.1103/physreva.104.043707}, journal={Physical Review A}, author={Luo, Kai Hong and Santandrea, Matteo and Stefszky, Michael and Sperling, Jan and Massaro, Marcello and Ferreri, Alessandro and Sharapova, Polina and Herrmann, Harald and Silberhorn, Christine}, year={2021} }","chicago":"Luo, Kai Hong, Matteo Santandrea, Michael Stefszky, Jan Sperling, Marcello Massaro, Alessandro Ferreri, Polina Sharapova, Harald Herrmann, and Christine Silberhorn. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.” Physical Review A, 2021. https://doi.org/10.1103/physreva.104.043707.","apa":"Luo, K. H., Santandrea, M., Stefszky, M., Sperling, J., Massaro, M., Ferreri, A., Sharapova, P., Herrmann, H., & Silberhorn, C. (2021). Quantum optical coherence: From linear to nonlinear interferometers. Physical Review A. https://doi.org/10.1103/physreva.104.043707","ama":"Luo KH, Santandrea M, Stefszky M, et al. Quantum optical coherence: From linear to nonlinear interferometers. Physical Review A. Published online 2021. doi:10.1103/physreva.104.043707","ieee":"K. H. Luo et al., “Quantum optical coherence: From linear to nonlinear interferometers,” Physical Review A, 2021, doi: 10.1103/physreva.104.043707.","short":"K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021)."},"type":"journal_article","year":"2021","date_updated":"2023-04-20T15:08:25Z","_id":"26889","doi":"10.1103/physreva.104.043707"},{"year":"2020","type":"journal_article","citation":{"mla":"Stefszky, Michael, et al. “Waveguide Resonator with an Integrated Phase Modulator for Second Harmonic Generation.” Optics Express, 1991, 2020, doi:10.1364/oe.412824.","bibtex":"@article{Stefszky_Santandrea_vom Bruch_Krapick_Eigner_Ricken_Quiring_Herrmann_Silberhorn_2020, title={Waveguide resonator with an integrated phase modulator for second harmonic generation}, DOI={10.1364/oe.412824}, number={1991}, journal={Optics Express}, author={Stefszky, Michael and Santandrea, Matteo and vom Bruch, Felix and Krapick, S. and Eigner, Christof and Ricken, R. and Quiring, V. and Herrmann, Harald and Silberhorn, Christine}, year={2020} }","apa":"Stefszky, M., Santandrea, M., vom Bruch, F., Krapick, S., Eigner, C., Ricken, R., Quiring, V., Herrmann, H., & Silberhorn, C. (2020). Waveguide resonator with an integrated phase modulator for second harmonic generation. Optics Express, Article 1991. https://doi.org/10.1364/oe.412824","ama":"Stefszky M, Santandrea M, vom Bruch F, et al. Waveguide resonator with an integrated phase modulator for second harmonic generation. Optics Express. Published online 2020. doi:10.1364/oe.412824","chicago":"Stefszky, Michael, Matteo Santandrea, Felix vom Bruch, S. Krapick, Christof Eigner, R. Ricken, V. Quiring, Harald Herrmann, and Christine Silberhorn. “Waveguide Resonator with an Integrated Phase Modulator for Second Harmonic Generation.” Optics Express, 2020. https://doi.org/10.1364/oe.412824.","ieee":"M. Stefszky et al., “Waveguide resonator with an integrated phase modulator for second harmonic generation,” Optics Express, Art. no. 1991, 2020, doi: 10.1364/oe.412824.","short":"M. Stefszky, M. Santandrea, F. vom Bruch, S. Krapick, C. Eigner, R. Ricken, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express (2020)."},"language":[{"iso":"eng"}],"article_number":"1991","doi":"10.1364/oe.412824","date_updated":"2022-01-06T06:55:40Z","_id":"22771","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"status":"public","date_created":"2021-07-21T07:49:22Z","author":[{"first_name":"Michael","full_name":"Stefszky, Michael","last_name":"Stefszky","id":"42777"},{"last_name":"Santandrea","id":"55095","first_name":"Matteo","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo"},{"last_name":"vom Bruch","id":"71245","first_name":"Felix","full_name":"vom Bruch, Felix"},{"last_name":"Krapick","full_name":"Krapick, S.","first_name":"S."},{"last_name":"Eigner","id":"13244","first_name":"Christof","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083"},{"first_name":"R.","full_name":"Ricken, R.","last_name":"Ricken"},{"full_name":"Quiring, V.","first_name":"V.","last_name":"Quiring"},{"id":"216","last_name":"Herrmann","full_name":"Herrmann, Harald","first_name":"Harald"},{"full_name":"Silberhorn, Christine","first_name":"Christine","id":"26263","last_name":"Silberhorn"}],"publication":"Optics Express","department":[{"_id":"15"},{"_id":"288"}],"title":"Waveguide resonator with an integrated phase modulator for second harmonic generation","user_id":"13244"},{"citation":{"ieee":"F. Thiele et al., “Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides,” Optics Express, Art. no. 28961, 2020, doi: 10.1364/oe.399818.","short":"F. Thiele, F. vom Bruch, V. Quiring, R. Ricken, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Optics Express (2020).","mla":"Thiele, Frederik, et al. “Cryogenic Electro-Optic Polarisation Conversion in Titanium in-Diffused Lithium Niobate Waveguides.” Optics Express, 28961, 2020, doi:10.1364/oe.399818.","bibtex":"@article{Thiele_vom Bruch_Quiring_Ricken_Herrmann_Eigner_Silberhorn_Bartley_2020, title={Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides}, DOI={10.1364/oe.399818}, number={28961}, journal={Optics Express}, author={Thiele, Frederik and vom Bruch, Felix and Quiring, Victor and Ricken, Raimund and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}, year={2020} }","chicago":"Thiele, Frederik, Felix vom Bruch, Victor Quiring, Raimund Ricken, Harald Herrmann, Christof Eigner, Christine Silberhorn, and Tim Bartley. “Cryogenic Electro-Optic Polarisation Conversion in Titanium in-Diffused Lithium Niobate Waveguides.” Optics Express, 2020. https://doi.org/10.1364/oe.399818.","ama":"Thiele F, vom Bruch F, Quiring V, et al. Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides. Optics Express. Published online 2020. doi:10.1364/oe.399818","apa":"Thiele, F., vom Bruch, F., Quiring, V., Ricken, R., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2020). Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides. Optics Express, Article 28961. https://doi.org/10.1364/oe.399818"},"year":"2020","type":"journal_article","language":[{"iso":"eng"}],"article_number":"28961","doi":"10.1364/oe.399818","_id":"20157","date_updated":"2022-10-25T07:40:20Z","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"status":"public","date_created":"2020-10-21T11:03:11Z","author":[{"first_name":"Frederik","orcid":"0000-0003-0663-5587","full_name":"Thiele, Frederik","last_name":"Thiele","id":"50819"},{"id":"71245","last_name":"vom Bruch","full_name":"vom Bruch, Felix","first_name":"Felix"},{"first_name":"Victor","full_name":"Quiring, Victor","last_name":"Quiring"},{"first_name":"Raimund","full_name":"Ricken, Raimund","last_name":"Ricken"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","first_name":"Christof","id":"13244","last_name":"Eigner"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"},{"full_name":"Bartley, Tim","first_name":"Tim","id":"49683","last_name":"Bartley"}],"publication":"Optics Express","department":[{"_id":"15"}],"title":"Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides","user_id":"49683"},{"citation":{"ieee":"P. Vergyris et al., “Two-photon phase-sensing with single-photon detection,” Applied Physics Letters, vol. 117, no. 2, Art. no. 024001, 2020, doi: 10.1063/5.0009527.","short":"P. Vergyris, C. Babin, R. Nold, E. Gouzien, H. Herrmann, C. Silberhorn, O. Alibart, S. Tanzilli, F. Kaiser, Applied Physics Letters 117 (2020).","bibtex":"@article{Vergyris_Babin_Nold_Gouzien_Herrmann_Silberhorn_Alibart_Tanzilli_Kaiser_2020, title={Two-photon phase-sensing with single-photon detection}, volume={117}, DOI={10.1063/5.0009527}, number={2024001}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Vergyris, Panagiotis and Babin, Charles and Nold, Raphael and Gouzien, Elie and Herrmann, Harald and Silberhorn, Christine and Alibart, Olivier and Tanzilli, Sébastien and Kaiser, Florian}, year={2020} }","mla":"Vergyris, Panagiotis, et al. “Two-Photon Phase-Sensing with Single-Photon Detection.” Applied Physics Letters, vol. 117, no. 2, 024001, AIP Publishing, 2020, doi:10.1063/5.0009527.","chicago":"Vergyris, Panagiotis, Charles Babin, Raphael Nold, Elie Gouzien, Harald Herrmann, Christine Silberhorn, Olivier Alibart, Sébastien Tanzilli, and Florian Kaiser. “Two-Photon Phase-Sensing with Single-Photon Detection.” Applied Physics Letters 117, no. 2 (2020). https://doi.org/10.1063/5.0009527.","ama":"Vergyris P, Babin C, Nold R, et al. Two-photon phase-sensing with single-photon detection. Applied Physics Letters. 2020;117(2). doi:10.1063/5.0009527","apa":"Vergyris, P., Babin, C., Nold, R., Gouzien, E., Herrmann, H., Silberhorn, C., Alibart, O., Tanzilli, S., & Kaiser, F. (2020). Two-photon phase-sensing with single-photon detection. 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(2020). Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides. Optics Express, 28(22), Article 32925–32935. https://doi.org/10.1364/oe.399483","ama":"Eigner C, Padberg L, Santandrea M, Herrmann H, Brecht B, Silberhorn C. Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides. 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Silberhorn, “Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides,” Optics Express, vol. 28, no. 22, Art. no. 32925–32935, 2020, doi: 10.1364/oe.399483."},"_id":"21025","intvolume":" 28","issue":"22","article_number":"32925-32935","author":[{"id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","first_name":"Christof"},{"id":"40300","last_name":"Padberg","full_name":"Padberg, Laura","first_name":"Laura"},{"orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","first_name":"Matteo","id":"55095","last_name":"Santandrea"},{"id":"216","last_name":"Herrmann","full_name":"Herrmann, Harald","first_name":"Harald"},{"full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","id":"27150","last_name":"Brecht"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"}],"publication":"Optics Express","status":"public","date_created":"2021-01-20T08:35:45Z","volume":28,"user_id":"13244","language":[{"iso":"eng"}],"date_updated":"2023-02-01T12:46:27Z","doi":"10.1364/oe.399483","department":[{"_id":"15"},{"_id":"230"},{"_id":"429"},{"_id":"288"}],"project":[{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"}],"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","title":"Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides"},{"user_id":"59545","title":"Improving SPDC single-photon sources via extended heralding and feed-forward control","department":[{"_id":"288"}],"publication":"New Journal of Physics","author":[{"id":"59545","last_name":"Massaro","full_name":"Massaro, Marcello","orcid":"0000-0002-2539-7652","first_name":"Marcello"},{"last_name":"Meyer-Scott","first_name":"Evan","full_name":"Meyer-Scott, Evan"},{"last_name":"Montaut","first_name":"Nicola","full_name":"Montaut, Nicola"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"full_name":"Silberhorn, Christine","first_name":"Christine","id":"26263","last_name":"Silberhorn"}],"date_created":"2021-09-24T11:42:27Z","status":"public","publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"_id":"25038","date_updated":"2022-01-06T06:56:44Z","doi":"10.1088/1367-2630/ab1ec3","article_number":"053038","language":[{"iso":"eng"}],"type":"journal_article","year":"2019","citation":{"bibtex":"@article{Massaro_Meyer-Scott_Montaut_Herrmann_Silberhorn_2019, title={Improving SPDC single-photon sources via extended heralding and feed-forward control}, DOI={10.1088/1367-2630/ab1ec3}, number={053038}, journal={New Journal of Physics}, author={Massaro, Marcello and Meyer-Scott, Evan and Montaut, Nicola and Herrmann, Harald and Silberhorn, Christine}, year={2019} }","mla":"Massaro, Marcello, et al. “Improving SPDC Single-Photon Sources via Extended Heralding and Feed-Forward Control.” New Journal of Physics, 053038, 2019, doi:10.1088/1367-2630/ab1ec3.","apa":"Massaro, M., Meyer-Scott, E., Montaut, N., Herrmann, H., & Silberhorn, C. 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Silberhorn, New Journal of Physics (2019)."}},{"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"status":"public","date_created":"2021-10-15T09:39:24Z","author":[{"full_name":"Luo, Kai-Hong","first_name":"Kai-Hong","last_name":"Luo"},{"full_name":"Ansari, Vahid","first_name":"Vahid","last_name":"Ansari"},{"last_name":"Massaro","id":"59545","first_name":"Marcello","orcid":"0000-0002-2539-7652","full_name":"Massaro, Marcello"},{"id":"55095","last_name":"Santandrea","full_name":"Santandrea, Matteo","orcid":"0000-0001-5718-358X","first_name":"Matteo"},{"first_name":"Christof","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244"},{"last_name":"Ricken","first_name":"Raimund","full_name":"Ricken, Raimund"},{"full_name":"Herrmann, Harald","first_name":"Harald","id":"216","last_name":"Herrmann"},{"last_name":"Silberhorn","id":"26263","first_name":"Christine","full_name":"Silberhorn, Christine"}],"department":[{"_id":"288"}],"publication":"Optics Express","title":"Counter-propagating photon pair generation in a nonlinear waveguide","user_id":"55095","type":"journal_article","year":"2019","citation":{"ieee":"K.-H. Luo et al., “Counter-propagating photon pair generation in a nonlinear waveguide,” Optics Express, Art. no. 3215, 2019, doi: 10.1364/oe.378789.","short":"K.-H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H. Herrmann, C. Silberhorn, Optics Express (2019).","mla":"Luo, Kai-Hong, et al. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” Optics Express, 3215, 2019, doi:10.1364/oe.378789.","bibtex":"@article{Luo_Ansari_Massaro_Santandrea_Eigner_Ricken_Herrmann_Silberhorn_2019, title={Counter-propagating photon pair generation in a nonlinear waveguide}, DOI={10.1364/oe.378789}, number={3215}, journal={Optics Express}, author={Luo, Kai-Hong and Ansari, Vahid and Massaro, Marcello and Santandrea, Matteo and Eigner, Christof and Ricken, Raimund and Herrmann, Harald and Silberhorn, Christine}, year={2019} }","chicago":"Luo, Kai-Hong, Vahid Ansari, Marcello Massaro, Matteo Santandrea, Christof Eigner, Raimund Ricken, Harald Herrmann, and Christine Silberhorn. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” Optics Express, 2019. https://doi.org/10.1364/oe.378789.","apa":"Luo, K.-H., Ansari, V., Massaro, M., Santandrea, M., Eigner, C., Ricken, R., Herrmann, H., & Silberhorn, C. 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