[{"language":[{"iso":"eng"}],"article_number":"593","article_type":"original","user_id":"216","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"_id":"59069","status":"public","abstract":[{"lang":"eng","text":"<jats:p>Stable and bright single photon sources are key components for future quantum applications. A simple fabrication method is an important requirement for such sources. Here, we present a single photon source based on diced ridge waveguides in titanium indiffused LiNbO<jats:sub>3</jats:sub>. These waveguides can be easily fabricated by combining planar titanium in-diffusion without lithographic patterning and easy-to-handle precision dicing. Such devices have the potential to generate high single photon rates because ridge structures are typically less prone to the photorefractive effect. We achieve waveguide propagation losses &lt;0.4dBcm and a SHG conversion efficiency of about 81%Wcm<jats:sup>2</jats:sup>. Harnessing a type-0 SPDC process to generate 1550 nm photons, we obtain a SPDC brightness of 3⋅10<jats:sup>5</jats:sup>1s⋅mW⋅nm, with a heralding efficiency of <jats:italic>η</jats:italic><jats:sub>h</jats:sub>=45% (<jats:italic>η</jats:italic><jats:sub>h,wg</jats:sub>=77.5% for the waveguide itself excluded setup losses) and a heralded second-order correlation function of <jats:italic>g</jats:italic><jats:sub>h</jats:sub><jats:sup>2</jats:sup>(0)&lt;0.003 at low pump powers.</jats:p>"}],"type":"journal_article","publication":"Optics Continuum","doi":"10.1364/optcon.557439","title":"SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides","author":[{"last_name":"Kießler","id":"44252","full_name":"Kießler, Christian","first_name":"Christian"},{"id":"69553","full_name":"Kirsch, Michelle","last_name":"Kirsch","first_name":"Michelle"},{"first_name":"Sebastian","last_name":"Lengeling","full_name":"Lengeling, Sebastian","id":"44373"},{"first_name":"Harald","id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"date_created":"2025-03-19T10:56:04Z","volume":4,"publisher":"Optica Publishing Group","date_updated":"2025-03-19T16:03:25Z","citation":{"apa":"Kießler, C., Kirsch, M., Lengeling, S., Herrmann, H., &#38; Silberhorn, C. (2025). SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides. <i>Optics Continuum</i>, <i>4</i>(3), Article 593. <a href=\"https://doi.org/10.1364/optcon.557439\">https://doi.org/10.1364/optcon.557439</a>","short":"C. Kießler, M. Kirsch, S. Lengeling, H. Herrmann, C. Silberhorn, Optics Continuum 4 (2025).","bibtex":"@article{Kießler_Kirsch_Lengeling_Herrmann_Silberhorn_2025, title={SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides}, volume={4}, DOI={<a href=\"https://doi.org/10.1364/optcon.557439\">10.1364/optcon.557439</a>}, number={3593}, journal={Optics Continuum}, publisher={Optica Publishing Group}, author={Kießler, Christian and Kirsch, Michelle and Lengeling, Sebastian and Herrmann, Harald and Silberhorn, Christine}, year={2025} }","mla":"Kießler, Christian, et al. “SPDC Single-Photon Source in Ti-Indiffused Diced Ridge LiNbO<sub>3</sub> Waveguides.” <i>Optics Continuum</i>, vol. 4, no. 3, 593, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/optcon.557439\">10.1364/optcon.557439</a>.","chicago":"Kießler, Christian, Michelle Kirsch, Sebastian Lengeling, Harald Herrmann, and Christine Silberhorn. “SPDC Single-Photon Source in Ti-Indiffused Diced Ridge LiNbO<sub>3</sub> Waveguides.” <i>Optics Continuum</i> 4, no. 3 (2025). <a href=\"https://doi.org/10.1364/optcon.557439\">https://doi.org/10.1364/optcon.557439</a>.","ieee":"C. Kießler, M. Kirsch, S. Lengeling, H. Herrmann, and C. Silberhorn, “SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides,” <i>Optics Continuum</i>, vol. 4, no. 3, Art. no. 593, 2025, doi: <a href=\"https://doi.org/10.1364/optcon.557439\">10.1364/optcon.557439</a>.","ama":"Kießler C, Kirsch M, Lengeling S, Herrmann H, Silberhorn C. SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides. <i>Optics Continuum</i>. 2025;4(3). doi:<a href=\"https://doi.org/10.1364/optcon.557439\">10.1364/optcon.557439</a>"},"intvolume":"         4","year":"2025","issue":"3","publication_status":"published","publication_identifier":{"issn":["2770-0208"]}},{"status":"public","type":"journal_article","article_number":"50451","article_type":"original","_id":"62269","project":[{"name":"TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher Filterung unter Verwendung integrierter supraleitender Detektoren","_id":"171"}],"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"49683","intvolume":"        33","citation":{"ieee":"N. A. Lange <i>et al.</i>, “Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides,” <i>Optics Express</i>, vol. 33, no. 24, Art. no. 50451, 2025, doi: <a href=\"https://doi.org/10.1364/oe.578108\">10.1364/oe.578108</a>.","chicago":"Lange, Nina Amelie, Sebastian Lengeling, Philipp Mues, Viktor Quiring, Werner Ridder, Christof Eigner, Harald Herrmann, Christine Silberhorn, and Tim Bartley. “Widely Non-Degenerate Nonlinear Frequency Conversion in Cryogenic Titanium in-Diffused Lithium Niobate Waveguides.” <i>Optics Express</i> 33, no. 24 (2025). <a href=\"https://doi.org/10.1364/oe.578108\">https://doi.org/10.1364/oe.578108</a>.","ama":"Lange NA, Lengeling S, Mues P, et al. Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides. <i>Optics Express</i>. 2025;33(24). doi:<a href=\"https://doi.org/10.1364/oe.578108\">10.1364/oe.578108</a>","short":"N.A. Lange, S. Lengeling, P. Mues, V. Quiring, W. Ridder, C. Eigner, H. Herrmann, C. Silberhorn, T. Bartley, Optics Express 33 (2025).","bibtex":"@article{Lange_Lengeling_Mues_Quiring_Ridder_Eigner_Herrmann_Silberhorn_Bartley_2025, title={Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.578108\">10.1364/oe.578108</a>}, number={2450451}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Lange, Nina Amelie and Lengeling, Sebastian and Mues, Philipp and Quiring, Viktor and Ridder, Werner and Eigner, Christof and Herrmann, Harald and Silberhorn, Christine and Bartley, Tim}, year={2025} }","mla":"Lange, Nina Amelie, et al. “Widely Non-Degenerate Nonlinear Frequency Conversion in Cryogenic Titanium in-Diffused Lithium Niobate Waveguides.” <i>Optics Express</i>, vol. 33, no. 24, 50451, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/oe.578108\">10.1364/oe.578108</a>.","apa":"Lange, N. A., Lengeling, S., Mues, P., Quiring, V., Ridder, W., Eigner, C., Herrmann, H., Silberhorn, C., &#38; Bartley, T. (2025). Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides. <i>Optics Express</i>, <i>33</i>(24), Article 50451. <a href=\"https://doi.org/10.1364/oe.578108\">https://doi.org/10.1364/oe.578108</a>"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","doi":"10.1364/oe.578108","main_file_link":[{"open_access":"1"}],"date_updated":"2025-12-12T12:13:45Z","oa":"1","volume":33,"author":[{"first_name":"Nina Amelie","orcid":"0000-0001-6624-7098","last_name":"Lange","id":"56843","full_name":"Lange, Nina Amelie"},{"first_name":"Sebastian","id":"44373","full_name":"Lengeling, Sebastian","last_name":"Lengeling"},{"orcid":"0000-0003-0643-7636","last_name":"Mues","id":"49772","full_name":"Mues, Philipp","first_name":"Philipp"},{"full_name":"Quiring, Viktor","last_name":"Quiring","first_name":"Viktor"},{"last_name":"Ridder","id":"63574","full_name":"Ridder, Werner","first_name":"Werner"},{"id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Tim","last_name":"Bartley","id":"49683","full_name":"Bartley, Tim"}],"abstract":[{"lang":"eng","text":"The titanium in-diffused lithium niobate waveguide platform is well-established for reliable prototyping and packaging of many quantum photonic components at room temperature. Nevertheless, compatibility with certain quantum light sources and superconducting detectors requires operation under cryogenic conditions. We characterize alterations in phase-matching and mode guiding of a non-degenerate spontaneous parametric down-conversion process emitting around 1556 nm and 950 nm, under cryogenic conditions. Despite the effects of pyroelectricity and photorefraction, the spectral properties match our theoretical model. Nevertheless, these effects cause small but significant variations within and between cooling cycles. These measurements provide a first benchmark against which other nonlinear photonic integration platforms, such as thin-film lithium niobate, can be compared."}],"publication":"Optics Express","language":[{"iso":"eng"}],"year":"2025","issue":"24","title":"Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides","publisher":"Optica Publishing Group","date_created":"2025-11-20T10:35:35Z"},{"date_created":"2025-06-30T08:58:37Z","author":[{"last_name":"Brockmeier","id":"44807","full_name":"Brockmeier, Julian","first_name":"Julian"},{"first_name":"Timon","last_name":"Schapeler","orcid":"0000-0001-7652-1716","id":"55629","full_name":"Schapeler, Timon"},{"last_name":"Lange","orcid":"0000-0001-6624-7098","id":"56843","full_name":"Lange, Nina Amelie","first_name":"Nina Amelie"},{"first_name":"Jan Philipp","id":"33913","full_name":"Höpker, Jan Philipp","last_name":"Höpker"},{"first_name":"Harald","id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Tim","last_name":"Bartley","full_name":"Bartley, Tim","id":"49683"}],"oa":"1","date_updated":"2025-12-15T09:21:29Z","doi":"10.1088/1367-2630/ade46c","main_file_link":[{"open_access":"1"}],"title":"Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes","citation":{"ieee":"J. Brockmeier <i>et al.</i>, “Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes,” <i>New Journal of Physics</i>, 2025, doi: <a href=\"https://doi.org/10.1088/1367-2630/ade46c\">10.1088/1367-2630/ade46c</a>.","chicago":"Brockmeier, Julian, Timon Schapeler, Nina Amelie Lange, Jan Philipp Höpker, Harald Herrmann, Christine Silberhorn, and Tim Bartley. “Harnessing Temporal Dispersion for Integrated Pump Filtering in Spontaneous Heralded Single-Photon Generation Processes.” <i>New Journal of Physics</i>, 2025. <a href=\"https://doi.org/10.1088/1367-2630/ade46c\">https://doi.org/10.1088/1367-2630/ade46c</a>.","ama":"Brockmeier J, Schapeler T, Lange NA, et al. Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes. <i>New Journal of Physics</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1088/1367-2630/ade46c\">10.1088/1367-2630/ade46c</a>","bibtex":"@article{Brockmeier_Schapeler_Lange_Höpker_Herrmann_Silberhorn_Bartley_2025, title={Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/ade46c\">10.1088/1367-2630/ade46c</a>}, journal={New Journal of Physics}, author={Brockmeier, Julian and Schapeler, Timon and Lange, Nina Amelie and Höpker, Jan Philipp and Herrmann, Harald and Silberhorn, Christine and Bartley, Tim}, year={2025} }","short":"J. Brockmeier, T. Schapeler, N.A. Lange, J.P. Höpker, H. Herrmann, C. Silberhorn, T. Bartley, New Journal of Physics (2025).","mla":"Brockmeier, Julian, et al. “Harnessing Temporal Dispersion for Integrated Pump Filtering in Spontaneous Heralded Single-Photon Generation Processes.” <i>New Journal of Physics</i>, 2025, doi:<a href=\"https://doi.org/10.1088/1367-2630/ade46c\">10.1088/1367-2630/ade46c</a>.","apa":"Brockmeier, J., Schapeler, T., Lange, N. A., Höpker, J. P., Herrmann, H., Silberhorn, C., &#38; Bartley, T. (2025). Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes. <i>New Journal of Physics</i>. <a href=\"https://doi.org/10.1088/1367-2630/ade46c\">https://doi.org/10.1088/1367-2630/ade46c</a>"},"year":"2025","department":[{"_id":"15"},{"_id":"623"}],"user_id":"56843","_id":"60466","project":[{"name":"TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher Filterung unter Verwendung integrierter supraleitender Detektoren","_id":"171"}],"language":[{"iso":"eng"}],"publication":"New Journal of Physics","type":"journal_article","status":"public"},{"intvolume":"       193","citation":{"ama":"Kirsch M, Kießler C, Lengeling S, et al. Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides. <i>Optics &#38; Laser Technology</i>. 2025;193. doi:<a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">10.1016/j.optlastec.2025.114260</a>","ieee":"M. Kirsch <i>et al.</i>, “Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides,” <i>Optics &#38; Laser Technology</i>, vol. 193, Art. no. 114260, 2025, doi: <a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">10.1016/j.optlastec.2025.114260</a>.","chicago":"Kirsch, Michelle, Christian Kießler, Sebastian Lengeling, Michael Stefszky, Christof Eigner, Harald Herrmann, and Christine Silberhorn. “Photorefraction and In-Situ Optical Cleaning in Various Types of LiNbO3 Waveguides.” <i>Optics &#38; Laser Technology</i> 193 (2025). <a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">https://doi.org/10.1016/j.optlastec.2025.114260</a>.","mla":"Kirsch, Michelle, et al. “Photorefraction and In-Situ Optical Cleaning in Various Types of LiNbO3 Waveguides.” <i>Optics &#38; Laser Technology</i>, vol. 193, 114260, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">10.1016/j.optlastec.2025.114260</a>.","short":"M. Kirsch, C. Kießler, S. Lengeling, M. Stefszky, C. Eigner, H. Herrmann, C. Silberhorn, Optics &#38; Laser Technology 193 (2025).","bibtex":"@article{Kirsch_Kießler_Lengeling_Stefszky_Eigner_Herrmann_Silberhorn_2025, title={Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides}, volume={193}, DOI={<a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">10.1016/j.optlastec.2025.114260</a>}, number={114260}, journal={Optics &#38; Laser Technology}, publisher={Elsevier BV}, author={Kirsch, Michelle and Kießler, Christian and Lengeling, Sebastian and Stefszky, Michael and Eigner, Christof and Herrmann, Harald and Silberhorn, Christine}, year={2025} }","apa":"Kirsch, M., Kießler, C., Lengeling, S., Stefszky, M., Eigner, C., Herrmann, H., &#38; Silberhorn, C. (2025). Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides. <i>Optics &#38; Laser Technology</i>, <i>193</i>, Article 114260. <a href=\"https://doi.org/10.1016/j.optlastec.2025.114260\">https://doi.org/10.1016/j.optlastec.2025.114260</a>"},"publication_identifier":{"issn":["0030-3992"]},"publication_status":"published","doi":"10.1016/j.optlastec.2025.114260","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S0030399225018511?via%3Dihub"}],"volume":193,"author":[{"first_name":"Michelle","id":"69553","full_name":"Kirsch, Michelle","last_name":"Kirsch"},{"first_name":"Christian","id":"44252","full_name":"Kießler, Christian","last_name":"Kießler"},{"last_name":"Lengeling","id":"44373","full_name":"Lengeling, Sebastian","first_name":"Sebastian"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"full_name":"Eigner, Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"date_updated":"2025-12-18T08:27:13Z","oa":"1","status":"public","type":"journal_article","article_number":"114260","article_type":"original","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"user_id":"69553","_id":"63192","year":"2025","quality_controlled":"1","title":"Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides","date_created":"2025-12-18T08:17:57Z","publisher":"Elsevier BV","abstract":[{"text":"Lithium niobate (LiNbO3) is a widely used material with several desirable physical properties, such as high second-order nonlinear optical and strong electro-optical effects. Thus LiNbO3 is used for various applications such as electro-optic modulation or nonlinear frequency conversion and mixing. But LiNbO3 also exhibits a strong photorefractive effect, which limits the intensity of the optical fields involved. Various approaches to reduce the photorefractive effect have been investigated, such as increasing the temperature, doping the crystal or using different waveguide designs in LiNbO3. Here, we present an analysis of the approach to increase the photorefractive damage threshold by using different waveguide designs. Contrary to previous claims and investigations, our SHG measurements revealed no significant difference in resistance to photorefractive damage when comparing conventional Ti-doped channel waveguides and Ti-doped diced ridge waveguides in LiNbO3. Furthermore, we have investigated the effect of photorefractive cleaning and curing using a light field at 532 nm. Here, we observe a reduction in the photorefractive effect at room temperature during and after SHG measurements, which is an easy alternative to conventional approaches.","lang":"eng"}],"publication":"Optics & Laser Technology","language":[{"iso":"eng"}]},{"intvolume":"        33","citation":{"bibtex":"@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et al._2025, title={Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>}, number={2552729}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin and Eigner, Christof and et al.}, year={2025} }","short":"S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke, H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33 (2025).","mla":"Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i>, vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","apa":"Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R., Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., &#38; Silberhorn, C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>, <i>33</i>(25), Article 52729. <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>","chicago":"Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla, Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i> 33, no. 25 (2025). <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>.","ieee":"S. Babel <i>et al.</i>, “Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths,” <i>Optics Express</i>, vol. 33, no. 25, Art. no. 52729, 2025, doi: <a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","ama":"Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>. 2025;33(25). doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","doi":"10.1364/oe.571605","main_file_link":[{"url":"https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729","open_access":"1"}],"volume":33,"author":[{"orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","full_name":"Babel, Silia","id":"63231","first_name":"Silia"},{"last_name":"Bollmers","id":"61375","full_name":"Bollmers, Laura","first_name":"Laura"},{"last_name":"Roeder","full_name":"Roeder, Franz","id":"88149","first_name":"Franz"},{"full_name":"Ridder, Werner","id":"63574","last_name":"Ridder","first_name":"Werner"},{"first_name":"Christian","id":"40420","full_name":"Golla, Christian","last_name":"Golla"},{"first_name":"Ronja","full_name":"Köthemann, Ronja","last_name":"Köthemann"},{"first_name":"Bernhard","full_name":"Reineke, Bernhard","id":"29821","last_name":"Reineke"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"oa":"1","date_updated":"2026-01-07T11:28:35Z","status":"public","type":"journal_article","article_number":"52729","article_type":"original","department":[{"_id":"288"},{"_id":"623"}],"user_id":"63231","_id":"63091","year":"2025","issue":"25","title":"Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths","date_created":"2025-12-15T07:20:36Z","publisher":"Optica Publishing Group","abstract":[{"text":"We present the design and characterization of a guided-wave, bright, and highly frequency non-degenerate parametric down-conversion (PDC) source in thin-film lithium niobate. The source generates photon pairs with wavelengths of 815 nm and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths. We confirm the high quality of the generated single photons by determining a value for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3). Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which is two orders of magnitude higher than sources based on weakly guiding waveguides. The shape of the PDC spectrum and the strong agreement between the effective and nominal bandwidth highlight our high fabrication quality of periodically poled waveguides. The good agreement between the measured and simulated spectral characteristics of our source demonstrates our excellent understanding of the PDC process. Our result is a valuable step towards practical and scalable quantum communication networks as well as photonic quantum computing.","lang":"eng"}],"publication":"Optics Express","language":[{"iso":"eng"}]},{"title":"Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters","doi":"10.1364/oe.510319","date_updated":"2024-02-13T13:09:51Z","publisher":"Optica Publishing Group","date_created":"2024-02-13T13:03:01Z","author":[{"full_name":"Babai-Hemati, Jonas","last_name":"Babai-Hemati","first_name":"Jonas"},{"first_name":"Felix","last_name":"vom Bruch","full_name":"vom Bruch, Felix","id":"71245"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"year":"2024","citation":{"ieee":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, and C. Silberhorn, “Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters,” <i>Optics Express</i>, 2024, doi: <a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>.","chicago":"Babai-Hemati, Jonas, Felix vom Bruch, Harald Herrmann, and Christine Silberhorn. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” <i>Optics Express</i>, 2024. <a href=\"https://doi.org/10.1364/oe.510319\">https://doi.org/10.1364/oe.510319</a>.","ama":"Babai-Hemati J, vom Bruch F, Herrmann H, Silberhorn C. Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. <i>Optics Express</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>","apa":"Babai-Hemati, J., vom Bruch, F., Herrmann, H., &#38; Silberhorn, C. (2024). Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. <i>Optics Express</i>. <a href=\"https://doi.org/10.1364/oe.510319\">https://doi.org/10.1364/oe.510319</a>","mla":"Babai-Hemati, Jonas, et al. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” <i>Optics Express</i>, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>.","bibtex":"@article{Babai-Hemati_vom Bruch_Herrmann_Silberhorn_2024, title={Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters}, DOI={<a href=\"https://doi.org/10.1364/oe.510319\">10.1364/oe.510319</a>}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babai-Hemati, Jonas and vom Bruch, Felix and Herrmann, Harald and Silberhorn, Christine}, year={2024} }","short":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, C. Silberhorn, Optics Express (2024)."},"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"project":[{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"}],"_id":"51339","user_id":"216","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"status":"public","type":"journal_article","publication":"Optics Express"},{"date_created":"2024-12-08T14:37:43Z","author":[{"full_name":"Meier, Patrick A.","last_name":"Meier","first_name":"Patrick A."},{"first_name":"Susanne","full_name":"Keuker-Baumann, Susanne","last_name":"Keuker-Baumann"},{"first_name":"Thorsten","last_name":"Röder","full_name":"Röder, Thorsten"},{"first_name":"Harald","id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"last_name":"Kitzerow","full_name":"Kitzerow, Heinz-Siegfried","id":"254","first_name":"Heinz-Siegfried"}],"publisher":"Polish Academy of Sciences Chancellery","date_updated":"2024-12-08T14:45:39Z","doi":"10.24425/opelre.2024.150611","title":"Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals","publication_identifier":{"issn":["1896-3757"]},"publication_status":"published","page":"150611-150611","citation":{"ieee":"P. A. Meier <i>et al.</i>, “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals,” <i>Opto-Electronics Review</i>, pp. 150611–150611, 2024, doi: <a href=\"https://doi.org/10.24425/opelre.2024.150611\">10.24425/opelre.2024.150611</a>.","chicago":"Meier, Patrick A., Susanne Keuker-Baumann, Thorsten Röder, Harald Herrmann, Raimund Ricken, Christine Silberhorn, and Heinz-Siegfried Kitzerow. “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals.” <i>Opto-Electronics Review</i>, 2024, 150611–150611. <a href=\"https://doi.org/10.24425/opelre.2024.150611\">https://doi.org/10.24425/opelre.2024.150611</a>.","ama":"Meier PA, Keuker-Baumann S, Röder T, et al. Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals. <i>Opto-Electronics Review</i>. Published online 2024:150611-150611. doi:<a href=\"https://doi.org/10.24425/opelre.2024.150611\">10.24425/opelre.2024.150611</a>","bibtex":"@article{Meier_Keuker-Baumann_Röder_Herrmann_Ricken_Silberhorn_Kitzerow_2024, title={Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals}, DOI={<a href=\"https://doi.org/10.24425/opelre.2024.150611\">10.24425/opelre.2024.150611</a>}, journal={Opto-Electronics Review}, publisher={Polish Academy of Sciences Chancellery}, author={Meier, Patrick A. and Keuker-Baumann, Susanne and Röder, Thorsten and Herrmann, Harald and Ricken, Raimund and Silberhorn, Christine and Kitzerow, Heinz-Siegfried}, year={2024}, pages={150611–150611} }","mla":"Meier, Patrick A., et al. “Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals.” <i>Opto-Electronics Review</i>, Polish Academy of Sciences Chancellery, 2024, pp. 150611–150611, doi:<a href=\"https://doi.org/10.24425/opelre.2024.150611\">10.24425/opelre.2024.150611</a>.","short":"P.A. Meier, S. Keuker-Baumann, T. Röder, H. Herrmann, R. Ricken, C. Silberhorn, H.-S. Kitzerow, Opto-Electronics Review (2024) 150611–150611.","apa":"Meier, P. A., Keuker-Baumann, S., Röder, T., Herrmann, H., Ricken, R., Silberhorn, C., &#38; Kitzerow, H.-S. (2024). Optical imaging of ferroelectric domains in periodically poled lithium niobate using ferroelectric liquid crystals. <i>Opto-Electronics Review</i>, 150611–150611. <a href=\"https://doi.org/10.24425/opelre.2024.150611\">https://doi.org/10.24425/opelre.2024.150611</a>"},"year":"2024","department":[{"_id":"313"},{"_id":"230"},{"_id":"2"}],"user_id":"254","_id":"57619","language":[{"iso":"pol"}],"publication":"Opto-Electronics Review","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"<jats:p>Ferroelectric liquid crystals exhibiting a chiral smectic C* phase are deposited on z cut periodically poled lithium niobate substrates and investigated by polarized optical microscopy. While the pure substrates placed between crossed polarizers and observed in transmission appear dark, uniformly aligned liquid crystal films deposited on these substrates show alternating domains with varying brightness. This effect can be attributed to the well-known coupling between the direction of the spontaneous polarization and the optical axis in the birefringent ferroelectric smectic C* phase. Quantitative measurements of the tilt angle between the local optical axis and the smectic layer normal confirm antiparallel orientations of spontaneous polarization of the liquid crystal from domain to domain, as expected by the periodic poling of the lithium niobate substrate. This effect provides a valuable non-destructive method of optical inspection of the quality of periodically poled ferroelectric substrates, which plays an important role in achieving quasi-phase-matching in non-linear optical applications.</jats:p>"}]},{"doi":"10.1088/2633-4356/ad207d","title":"Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics","author":[{"first_name":"Frederik","orcid":"0000-0003-0663-5587","last_name":"Thiele","full_name":"Thiele, Frederik","id":"50819"},{"first_name":"Thomas","orcid":"0000-0001-8627-2119","last_name":"Hummel","id":"83846","full_name":"Hummel, Thomas"},{"orcid":"0000-0001-6624-7098","last_name":"Lange","id":"56843","full_name":"Lange, Nina Amelie","first_name":"Nina Amelie"},{"first_name":"Felix","full_name":"Dreher, Felix","last_name":"Dreher"},{"full_name":"Protte, Maximilian","last_name":"Protte","first_name":"Maximilian"},{"full_name":"Bruch, Felix vom","last_name":"Bruch","first_name":"Felix vom"},{"last_name":"Lengeling","full_name":"Lengeling, Sebastian","id":"44373","first_name":"Sebastian"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"last_name":"Bartley","id":"49683","full_name":"Bartley, Tim","first_name":"Tim"}],"date_created":"2024-02-16T07:56:44Z","volume":4,"date_updated":"2025-12-15T09:23:02Z","publisher":"IOP Publishing","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).","mla":"Thiele, Frederik, et al. “Pyroelectric Influence on Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.” <i>Materials for Quantum Technology</i>, vol. 4, no. 1, 015402, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.1088/2633-4356/ad207d\">10.1088/2633-4356/ad207d</a>.","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={<a href=\"https://doi.org/10.1088/2633-4356/ad207d\">10.1088/2633-4356/ad207d</a>}, 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} }","apa":"Thiele, F., Hummel, T., Lange, N. A., Dreher, F., Protte, M., Bruch, F. vom, Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., &#38; Bartley, T. (2024). Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. <i>Materials for Quantum Technology</i>, <i>4</i>(1), Article 015402. <a href=\"https://doi.org/10.1088/2633-4356/ad207d\">https://doi.org/10.1088/2633-4356/ad207d</a>","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.” <i>Materials for Quantum Technology</i> 4, no. 1 (2024). <a href=\"https://doi.org/10.1088/2633-4356/ad207d\">https://doi.org/10.1088/2633-4356/ad207d</a>.","ieee":"F. Thiele <i>et al.</i>, “Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics,” <i>Materials for Quantum Technology</i>, vol. 4, no. 1, Art. no. 015402, 2024, doi: <a href=\"https://doi.org/10.1088/2633-4356/ad207d\">10.1088/2633-4356/ad207d</a>.","ama":"Thiele F, Hummel T, Lange NA, et al. Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics. <i>Materials for Quantum Technology</i>. 2024;4(1). doi:<a href=\"https://doi.org/10.1088/2633-4356/ad207d\">10.1088/2633-4356/ad207d</a>"},"intvolume":"         4","year":"2024","issue":"1","publication_status":"published","publication_identifier":{"issn":["2633-4356"]},"language":[{"iso":"eng"}],"article_number":"015402","keyword":["General Earth and Planetary Sciences","General Environmental Science"],"user_id":"56843","project":[{"_id":"171","name":"TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher Filterung unter Verwendung integrierter supraleitender Detektoren"}],"_id":"51356","status":"public","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>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 LiNbO<jats:sub>3</jats:sub> 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.</jats:p>","lang":"eng"}],"type":"journal_article","publication":"Materials for Quantum Technology"},{"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"}],"status":"public","publication":"Optics Express","type":"journal_article","keyword":["Atomic and Molecular Physics","and Optics"],"article_number":"23140","language":[{"iso":"eng"}],"_id":"45850","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}],"user_id":"63231","year":"2023","intvolume":"        31","citation":{"apa":"Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F., Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., &#38; Silberhorn, C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>, <i>31</i>(14), Article 23140. <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>","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.” <i>Optics Express</i>, vol. 31, no. 14, 23140, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>.","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={<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>}, 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.” <i>Optics Express</i> 31, no. 14 (2023). <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>.","ieee":"S. Babel <i>et al.</i>, “Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler,” <i>Optics Express</i>, vol. 31, no. 14, Art. no. 23140, 2023, doi: <a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>.","ama":"Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>. 2023;31(14). doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"14","title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","doi":"10.1364/oe.484126","publisher":"Optica Publishing Group","date_updated":"2023-07-05T07:58:31Z","volume":31,"date_created":"2023-07-03T14:08:36Z","author":[{"orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","id":"63231","full_name":"Babel, Silia","first_name":"Silia"},{"first_name":"Laura","last_name":"Bollmers","full_name":"Bollmers, Laura","id":"61375"},{"id":"59545","full_name":"Massaro, Marcello","last_name":"Massaro","orcid":"0000-0002-2539-7652","first_name":"Marcello"},{"first_name":"Kai Hong","full_name":"Luo, Kai Hong","id":"36389","orcid":"0000-0003-1008-4976","last_name":"Luo"},{"id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael"},{"first_name":"Federico","full_name":"Pegoraro, Federico","id":"88928","last_name":"Pegoraro"},{"full_name":"Held, Philip","id":"68236","last_name":"Held","first_name":"Philip"},{"last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216","first_name":"Harald"},{"full_name":"Eigner, Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"}]},{"publication":"Optics Letters","abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>"}],"keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"quality_controlled":"1","issue":"11","year":"2023","publisher":"Optica Publishing Group","date_created":"2023-07-25T10:35:24Z","title":"Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing","type":"journal_article","status":"public","_id":"46138","project":[{"_id":"218","name":"UNIQORN: UNIQORN - Affordable Quantum Communication for Everyone - EU Quantum Flagship Project"}],"department":[{"_id":"230"},{"_id":"623"},{"_id":"288"}],"user_id":"216","article_number":"2999","article_type":"original","publication_identifier":{"issn":["0146-9592","1539-4794"]},"publication_status":"published","intvolume":"        48","citation":{"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={<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>}, 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} }","mla":"Domeneguetti, Renato, et al. “Fully Guided and Phase Locked Ti:PPLN Waveguide Squeezing for Applications in Quantum Sensing.” <i>Optics Letters</i>, vol. 48, no. 11, 2999, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>.","short":"R. Domeneguetti, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, Optics Letters 48 (2023).","apa":"Domeneguetti, R., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., &#38; Gehring, T. (2023). Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. <i>Optics Letters</i>, <i>48</i>(11), Article 2999. <a href=\"https://doi.org/10.1364/ol.486654\">https://doi.org/10.1364/ol.486654</a>","ama":"Domeneguetti R, Stefszky M, Herrmann H, et al. Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing. <i>Optics Letters</i>. 2023;48(11). doi:<a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>","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.” <i>Optics Letters</i> 48, no. 11 (2023). <a href=\"https://doi.org/10.1364/ol.486654\">https://doi.org/10.1364/ol.486654</a>.","ieee":"R. Domeneguetti <i>et al.</i>, “Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing,” <i>Optics Letters</i>, vol. 48, no. 11, Art. no. 2999, 2023, doi: <a href=\"https://doi.org/10.1364/ol.486654\">10.1364/ol.486654</a>."},"date_updated":"2023-07-25T10:58:05Z","volume":48,"author":[{"last_name":"Domeneguetti","full_name":"Domeneguetti, Renato","first_name":"Renato"},{"full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky","first_name":"Michael"},{"first_name":"Harald","last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"full_name":"Andersen, Ulrik L.","last_name":"Andersen","first_name":"Ulrik L."},{"full_name":"Neergaard-Nielsen, Jonas S.","last_name":"Neergaard-Nielsen","first_name":"Jonas S."},{"last_name":"Gehring","full_name":"Gehring, Tobias","first_name":"Tobias"}],"doi":"10.1364/ol.486654"},{"date_updated":"2023-08-23T07:25:37Z","publisher":"Optica Publishing Group","author":[{"full_name":"Kießler, Christian","id":"44252","last_name":"Kießler","first_name":"Christian"},{"first_name":"Hauke","last_name":"Conradi","full_name":"Conradi, Hauke"},{"full_name":"Kleinert, Moritz","last_name":"Kleinert","first_name":"Moritz"},{"full_name":"Quiring, Viktor","last_name":"Quiring","first_name":"Viktor"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"date_created":"2023-08-23T07:20:06Z","volume":31,"title":"Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology","doi":"10.1364/oe.487581","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"issue":"14","year":"2023","citation":{"mla":"Kießler, Christian, et al. “Fiber-Coupled Plug-and-Play Heralded Single Photon Source Based on Ti:LiNbO3 and Polymer Technology.” <i>Optics Express</i>, vol. 31, no. 14, 22685, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>.","short":"C. Kießler, H. Conradi, M. Kleinert, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express 31 (2023).","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={<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>}, 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} }","apa":"Kießler, C., Conradi, H., Kleinert, M., Quiring, V., Herrmann, H., &#38; Silberhorn, C. (2023). Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology. <i>Optics Express</i>, <i>31</i>(14), Article 22685. <a href=\"https://doi.org/10.1364/oe.487581\">https://doi.org/10.1364/oe.487581</a>","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. <i>Optics Express</i>. 2023;31(14). doi:<a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>","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.” <i>Optics Express</i> 31, no. 14 (2023). <a href=\"https://doi.org/10.1364/oe.487581\">https://doi.org/10.1364/oe.487581</a>.","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,” <i>Optics Express</i>, vol. 31, no. 14, Art. no. 22685, 2023, doi: <a href=\"https://doi.org/10.1364/oe.487581\">10.1364/oe.487581</a>."},"intvolume":"        31","_id":"46644","user_id":"44252","article_number":"22685","article_type":"original","keyword":["Atomic and Molecular Physics","and Optics"],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Optics Express","abstract":[{"lang":"eng","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"}],"status":"public"},{"publication":"Journal of Physics: Photonics","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>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 <jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $V_{\\pi/2}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:msub>\r\n                           <mml:mi>V</mml:mi>\r\n                           <mml:mrow>\r\n                              <mml:mi>π</mml:mi>\r\n                              <mml:mrow>\r\n                                 <mml:mo>/</mml:mo>\r\n                              </mml:mrow>\r\n                              <mml:mn>2</mml:mn>\r\n                           </mml:mrow>\r\n                        </mml:msub>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn1.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula> 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<jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $\\,\\mathrm{K}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n                           <mml:mi mathvariant=\"normal\">K</mml:mi>\r\n                        </mml:mrow>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn2.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula>. 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<jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $\\,\\mathrm{nm}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n                           <mml:mi mathvariant=\"normal\">n</mml:mi>\r\n                           <mml:mi mathvariant=\"normal\">m</mml:mi>\r\n                        </mml:mrow>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn3.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula> while cooling the device down to 5<jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $\\,\\mathrm{K}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n                           <mml:mi mathvariant=\"normal\">K</mml:mi>\r\n                        </mml:mrow>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn4.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula>. The polarisation converter uses periodic poling to phasematch the two orthogonal polarisations. The phasematched wavelength of the utilised poling changes by 112<jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $\\,\\mathrm{nm}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n                           <mml:mi mathvariant=\"normal\">n</mml:mi>\r\n                           <mml:mi mathvariant=\"normal\">m</mml:mi>\r\n                        </mml:mrow>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn5.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula> when cooling to 5<jats:inline-formula>\r\n                     <jats:tex-math><?CDATA $\\,\\mathrm{K}$?></jats:tex-math>\r\n                     <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n                           <mml:mi mathvariant=\"normal\">K</mml:mi>\r\n                        </mml:mrow>\r\n                     </mml:math>\r\n                     <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"jpphotonac6c63ieqn6.gif\" xlink:type=\"simple\" />\r\n                  </jats:inline-formula>.</jats:p>","lang":"eng"}],"language":[{"iso":"eng"}],"keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"],"issue":"3","year":"2022","date_created":"2022-10-11T07:14:40Z","publisher":"IOP Publishing","title":"Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides","type":"journal_article","status":"public","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"}],"user_id":"83846","_id":"33672","article_number":"034004","publication_identifier":{"issn":["2515-7647"]},"publication_status":"published","intvolume":"         4","citation":{"apa":"Thiele, F., vom Bruch, F., Brockmeier, J., Protte, M., Hummel, T., Ricken, R., Quiring, V., Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., &#38; Bartley, T. (2022). Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. <i>Journal of Physics: Photonics</i>, <i>4</i>(3), Article 034004. <a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">https://doi.org/10.1088/2515-7647/ac6c63</a>","mla":"Thiele, Frederik, et al. “Cryogenic Electro-Optic Modulation in Titanium in-Diffused Lithium Niobate Waveguides.” <i>Journal of Physics: Photonics</i>, vol. 4, no. 3, 034004, IOP Publishing, 2022, doi:<a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">10.1088/2515-7647/ac6c63</a>.","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).","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={<a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">10.1088/2515-7647/ac6c63</a>}, 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} }","ieee":"F. Thiele <i>et al.</i>, “Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides,” <i>Journal of Physics: Photonics</i>, vol. 4, no. 3, Art. no. 034004, 2022, doi: <a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">10.1088/2515-7647/ac6c63</a>.","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.” <i>Journal of Physics: Photonics</i> 4, no. 3 (2022). <a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">https://doi.org/10.1088/2515-7647/ac6c63</a>.","ama":"Thiele F, vom Bruch F, Brockmeier J, et al. Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides. <i>Journal of Physics: Photonics</i>. 2022;4(3). doi:<a href=\"https://doi.org/10.1088/2515-7647/ac6c63\">10.1088/2515-7647/ac6c63</a>"},"volume":4,"author":[{"orcid":"0000-0003-0663-5587","last_name":"Thiele","full_name":"Thiele, Frederik","id":"50819","first_name":"Frederik"},{"last_name":"vom Bruch","id":"71245","full_name":"vom Bruch, Felix","first_name":"Felix"},{"full_name":"Brockmeier, Julian","id":"44807","last_name":"Brockmeier","first_name":"Julian"},{"full_name":"Protte, Maximilian","id":"46170","last_name":"Protte","first_name":"Maximilian"},{"first_name":"Thomas","full_name":"Hummel, Thomas","id":"83846","last_name":"Hummel"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"id":"44373","full_name":"Lengeling, Sebastian","last_name":"Lengeling","first_name":"Sebastian"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"first_name":"Christof","id":"13244","full_name":"Eigner, Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"first_name":"Tim","last_name":"Bartley","id":"49683","full_name":"Bartley, Tim"}],"date_updated":"2023-01-12T15:16:35Z","doi":"10.1088/2515-7647/ac6c63"},{"keyword":["General Engineering"],"language":[{"iso":"eng"}],"_id":"38532","user_id":"44252","status":"public","publication":"Journal of Lightwave Technology","type":"journal_article","title":"On-Chip Quantum Communication Devices","doi":"10.1109/jlt.2022.3201389","date_updated":"2023-01-26T09:10:58Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","volume":40,"date_created":"2023-01-24T07:41:40Z","author":[{"first_name":"Alessandro","full_name":"Trenti, Alessandro","last_name":"Trenti"},{"full_name":"Achleitner, Martin","last_name":"Achleitner","first_name":"Martin"},{"last_name":"Prawits","full_name":"Prawits, Florian","first_name":"Florian"},{"first_name":"Bernhard","last_name":"Schrenk","full_name":"Schrenk, Bernhard"},{"first_name":"Hauke","full_name":"Conradi, Hauke","last_name":"Conradi"},{"first_name":"Moritz","full_name":"Kleinert, Moritz","last_name":"Kleinert"},{"first_name":"Alfonso","last_name":"Incoronato","full_name":"Incoronato, Alfonso"},{"first_name":"Francesco","last_name":"Zanetto","full_name":"Zanetto, Francesco"},{"last_name":"Zappa","full_name":"Zappa, Franco","first_name":"Franco"},{"full_name":"Luch, Ilaria Di","last_name":"Luch","first_name":"Ilaria Di"},{"full_name":"Cirkinoglu, Ozan","last_name":"Cirkinoglu","first_name":"Ozan"},{"last_name":"Leijtens","full_name":"Leijtens, Xaveer","first_name":"Xaveer"},{"first_name":"Antonio","full_name":"Bonardi, Antonio","last_name":"Bonardi"},{"first_name":"Cedric","last_name":"Bruynsteen","full_name":"Bruynsteen, Cedric"},{"last_name":"Yin","full_name":"Yin, Xin","first_name":"Xin"},{"full_name":"Kießler, Christian","id":"44252","last_name":"Kießler","first_name":"Christian"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"},{"last_name":"Bozzio","full_name":"Bozzio, Mathieu","first_name":"Mathieu"},{"first_name":"Philip","last_name":"Walther","full_name":"Walther, Philip"},{"full_name":"Thiel, Hannah C.","last_name":"Thiel","first_name":"Hannah C."},{"first_name":"Gregor","full_name":"Weihs, Gregor","last_name":"Weihs"},{"first_name":"Hannes","full_name":"Hubel, Hannes","last_name":"Hubel"}],"year":"2022","page":"7485-7497","intvolume":"        40","citation":{"ama":"Trenti A, Achleitner M, Prawits F, et al. On-Chip Quantum Communication Devices. <i>Journal of Lightwave Technology</i>. 2022;40(23):7485-7497. doi:<a href=\"https://doi.org/10.1109/jlt.2022.3201389\">10.1109/jlt.2022.3201389</a>","ieee":"A. Trenti <i>et al.</i>, “On-Chip Quantum Communication Devices,” <i>Journal of Lightwave Technology</i>, vol. 40, no. 23, pp. 7485–7497, 2022, doi: <a href=\"https://doi.org/10.1109/jlt.2022.3201389\">10.1109/jlt.2022.3201389</a>.","chicago":"Trenti, Alessandro, Martin Achleitner, Florian Prawits, Bernhard Schrenk, Hauke Conradi, Moritz Kleinert, Alfonso Incoronato, et al. “On-Chip Quantum Communication Devices.” <i>Journal of Lightwave Technology</i> 40, no. 23 (2022): 7485–97. <a href=\"https://doi.org/10.1109/jlt.2022.3201389\">https://doi.org/10.1109/jlt.2022.3201389</a>.","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.","mla":"Trenti, Alessandro, et al. “On-Chip Quantum Communication Devices.” <i>Journal of Lightwave Technology</i>, vol. 40, no. 23, Institute of Electrical and Electronics Engineers (IEEE), 2022, pp. 7485–97, doi:<a href=\"https://doi.org/10.1109/jlt.2022.3201389\">10.1109/jlt.2022.3201389</a>.","bibtex":"@article{Trenti_Achleitner_Prawits_Schrenk_Conradi_Kleinert_Incoronato_Zanetto_Zappa_Luch_et al._2022, title={On-Chip Quantum Communication Devices}, volume={40}, DOI={<a href=\"https://doi.org/10.1109/jlt.2022.3201389\">10.1109/jlt.2022.3201389</a>}, 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} }","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. <i>Journal of Lightwave Technology</i>, <i>40</i>(23), 7485–7497. <a href=\"https://doi.org/10.1109/jlt.2022.3201389\">https://doi.org/10.1109/jlt.2022.3201389</a>"},"publication_identifier":{"issn":["0733-8724","1558-2213"]},"publication_status":"published","issue":"23"},{"language":[{"iso":"eng"}],"department":[{"_id":"230"}],"user_id":"33913","_id":"26221","status":"public","publication":"Physical Review Applied","type":"journal_article","doi":"10.1103/physrevapplied.15.024028","title":"Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides","date_created":"2021-10-15T09:24:10Z","author":[{"first_name":"Moritz","full_name":"Bartnick, Moritz","last_name":"Bartnick"},{"first_name":"Matteo","id":"55095","full_name":"Santandrea, Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X"},{"first_name":"Jan Philipp","last_name":"Höpker","id":"33913","full_name":"Höpker, Jan Philipp"},{"id":"50819","full_name":"Thiele, Frederik","last_name":"Thiele","orcid":"0000-0003-0663-5587","first_name":"Frederik"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"id":"49683","full_name":"Bartley, Tim","last_name":"Bartley","first_name":"Tim"}],"date_updated":"2023-01-12T13:39:50Z","citation":{"apa":"Bartnick, M., Santandrea, M., Höpker, J. P., Thiele, F., Ricken, R., Quiring, V., Eigner, C., Herrmann, H., Silberhorn, C., &#38; Bartley, T. (2021). Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides. <i>Physical Review Applied</i>. <a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">https://doi.org/10.1103/physrevapplied.15.024028</a>","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={<a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">10.1103/physrevapplied.15.024028</a>}, 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.” <i>Physical Review Applied</i>, 2021, doi:<a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">10.1103/physrevapplied.15.024028</a>.","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).","ama":"Bartnick M, Santandrea M, Höpker JP, et al. Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides. <i>Physical Review Applied</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">10.1103/physrevapplied.15.024028</a>","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.” <i>Physical Review Applied</i>, 2021. <a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">https://doi.org/10.1103/physrevapplied.15.024028</a>.","ieee":"M. Bartnick <i>et al.</i>, “Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides,” <i>Physical Review Applied</i>, 2021, doi: <a href=\"https://doi.org/10.1103/physrevapplied.15.024028\">10.1103/physrevapplied.15.024028</a>."},"year":"2021","publication_identifier":{"issn":["2331-7019"]},"publication_status":"published"},{"publication_status":"published","publication_identifier":{"issn":["2469-9926","2469-9934"]},"year":"2021","citation":{"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.” <i>Physical Review A</i>, 2021. <a href=\"https://doi.org/10.1103/physreva.104.043707\">https://doi.org/10.1103/physreva.104.043707</a>.","ieee":"K. H. Luo <i>et al.</i>, “Quantum optical coherence: From linear to nonlinear interferometers,” <i>Physical Review A</i>, 2021, doi: <a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>.","ama":"Luo KH, Santandrea M, Stefszky M, et al. Quantum optical coherence: From linear to nonlinear interferometers. <i>Physical Review A</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>","apa":"Luo, K. H., Santandrea, M., Stefszky, M., Sperling, J., Massaro, M., Ferreri, A., Sharapova, P., Herrmann, H., &#38; Silberhorn, C. (2021). Quantum optical coherence: From linear to nonlinear interferometers. <i>Physical Review A</i>. <a href=\"https://doi.org/10.1103/physreva.104.043707\">https://doi.org/10.1103/physreva.104.043707</a>","mla":"Luo, Kai Hong, et al. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.” <i>Physical Review A</i>, 2021, doi:<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>.","bibtex":"@article{Luo_Santandrea_Stefszky_Sperling_Massaro_Ferreri_Sharapova_Herrmann_Silberhorn_2021, title={Quantum optical coherence: From linear to nonlinear interferometers}, DOI={<a href=\"https://doi.org/10.1103/physreva.104.043707\">10.1103/physreva.104.043707</a>}, 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} }","short":"K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021)."},"date_updated":"2023-04-20T15:08:25Z","author":[{"first_name":"Kai Hong","last_name":"Luo","orcid":"0000-0003-1008-4976","id":"36389","full_name":"Luo, Kai Hong"},{"first_name":"Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea","full_name":"Santandrea, Matteo","id":"55095"},{"first_name":"Michael","id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky"},{"id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"first_name":"Marcello","full_name":"Massaro, Marcello","id":"59545","last_name":"Massaro","orcid":"0000-0002-2539-7652"},{"id":"65609","full_name":"Ferreri, Alessandro","last_name":"Ferreri","first_name":"Alessandro"},{"first_name":"Polina","last_name":"Sharapova","full_name":"Sharapova, Polina","id":"60286"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"}],"date_created":"2021-10-26T12:42:16Z","title":"Quantum optical coherence: From linear to nonlinear interferometers","doi":"10.1103/physreva.104.043707","type":"journal_article","publication":"Physical Review A","status":"public","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"}],"_id":"26889","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"569"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"language":[{"iso":"eng"}]},{"article_number":"461","language":[{"iso":"eng"}],"_id":"26077","project":[{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"}],"department":[{"_id":"15"},{"_id":"288"}],"user_id":"42777","abstract":[{"text":"<jats:p>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.</jats:p>","lang":"eng"}],"status":"public","publication":"Quantum","type":"journal_article","title":"Spectrally multimode integrated SU(1,1) interferometer","doi":"10.22331/q-2021-05-27-461","date_updated":"2026-01-16T10:22:10Z","author":[{"first_name":"Alessandro","last_name":"Ferreri","full_name":"Ferreri, Alessandro","id":"65609"},{"first_name":"Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","id":"55095"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"last_name":"Luo","orcid":"0000-0003-1008-4976","id":"36389","full_name":"Luo, Kai Hong","first_name":"Kai Hong"},{"last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216","first_name":"Harald"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."}],"date_created":"2021-10-12T08:46:46Z","year":"2021","citation":{"ama":"Ferreri A, Santandrea M, Stefszky M, et al. Spectrally multimode integrated SU(1,1) interferometer. <i>Quantum</i>. Published online 2021. doi:<a href=\"https://doi.org/10.22331/q-2021-05-27-461\">10.22331/q-2021-05-27-461</a>","ieee":"A. Ferreri <i>et al.</i>, “Spectrally multimode integrated SU(1,1) interferometer,” <i>Quantum</i>, Art. no. 461, 2021, doi: <a href=\"https://doi.org/10.22331/q-2021-05-27-461\">10.22331/q-2021-05-27-461</a>.","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.” <i>Quantum</i>, 2021. <a href=\"https://doi.org/10.22331/q-2021-05-27-461\">https://doi.org/10.22331/q-2021-05-27-461</a>.","mla":"Ferreri, Alessandro, et al. “Spectrally Multimode Integrated SU(1,1) Interferometer.” <i>Quantum</i>, 461, 2021, doi:<a href=\"https://doi.org/10.22331/q-2021-05-27-461\">10.22331/q-2021-05-27-461</a>.","short":"A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P.R. Sharapova, Quantum (2021).","bibtex":"@article{Ferreri_Santandrea_Stefszky_Luo_Herrmann_Silberhorn_Sharapova_2021, title={Spectrally multimode integrated SU(1,1) interferometer}, DOI={<a href=\"https://doi.org/10.22331/q-2021-05-27-461\">10.22331/q-2021-05-27-461</a>}, 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} }","apa":"Ferreri, A., Santandrea, M., Stefszky, M., Luo, K. H., Herrmann, H., Silberhorn, C., &#38; Sharapova, P. R. (2021). Spectrally multimode integrated SU(1,1) interferometer. <i>Quantum</i>, Article 461. <a href=\"https://doi.org/10.22331/q-2021-05-27-461\">https://doi.org/10.22331/q-2021-05-27-461</a>"},"publication_identifier":{"issn":["2521-327X"]},"publication_status":"published"},{"date_updated":"2026-01-16T10:21:27Z","publisher":"Optica Publishing Group","author":[{"first_name":"Renato R.","last_name":"Domeneguetti","full_name":"Domeneguetti, Renato R."},{"full_name":"Conradi, Hauke","last_name":"Conradi","first_name":"Hauke"},{"first_name":"Moritz","last_name":"Kleinert","full_name":"Kleinert, Moritz"},{"first_name":"Christian","id":"44252","full_name":"Kießler, Christian","last_name":"Kießler"},{"first_name":"Michael","last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"},{"full_name":"Andersen, Ulrik L.","last_name":"Andersen","first_name":"Ulrik L."},{"full_name":"Neergaard-Nielsen, Jonas Schou","last_name":"Neergaard-Nielsen","first_name":"Jonas Schou"},{"first_name":"Tobias","full_name":"Gehring, Tobias","last_name":"Gehring"}],"date_created":"2023-01-24T08:06:33Z","title":"Nonlinear waveguides for integrated quantum light source","year":"2021","citation":{"mla":"Domeneguetti, Renato R., et al. “Nonlinear Waveguides for Integrated Quantum Light Source.” <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, Optica Publishing Group, 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.","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} }","apa":"Domeneguetti, R. R., Conradi, H., Kleinert, M., Kießler, C., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., &#38; Gehring, T. (2021). Nonlinear waveguides for integrated quantum light source. <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, 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 <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, eb_4_1. Optica Publishing Group, 2021.","ieee":"R. R. Domeneguetti <i>et al.</i>, “Nonlinear waveguides for integrated quantum light source,” in <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, 2021, p. eb_4_1.","ama":"Domeneguetti RR, Conradi H, Kleinert M, et al. Nonlinear waveguides for integrated quantum light source. In: <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>. Optica Publishing Group; 2021:eb_4_1."},"page":"eb_4_1","_id":"39027","user_id":"42777","department":[{"_id":"15"},{"_id":"288"}],"keyword":["Optical systems","Polymer waveguides","Quantum key distribution","Quantum light sources","Squeezed states","Waveguides"],"language":[{"iso":"eng"}],"type":"conference","publication":"2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference","abstract":[{"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.","lang":"eng"}],"status":"public"},{"year":"2021","citation":{"mla":"Ferreri, A., et al. “Multimode Integrated SU(1,1) Interferometer.” <i>Conference on Lasers and Electro-Optics</i>, Optica Publishing Group, 2021, doi:<a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">10.1364/cleo_qels.2021.ftu1n.6</a>.","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={<a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">10.1364/cleo_qels.2021.ftu1n.6</a>}, 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} }","apa":"Ferreri, A., Santandrea, M., Stefszky, M., Luo, K. H., Herrmann, H., Silberhorn, C., &#38; Sharapova, P. (2021). Multimode integrated SU(1,1) interferometer. <i>Conference on Lasers and Electro-Optics</i>. <a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">https://doi.org/10.1364/cleo_qels.2021.ftu1n.6</a>","ama":"Ferreri A, Santandrea M, Stefszky M, et al. Multimode integrated SU(1,1) interferometer. In: <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group; 2021. doi:<a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">10.1364/cleo_qels.2021.ftu1n.6</a>","chicago":"Ferreri, A., Matteo Santandrea, Michael Stefszky, Kai Hong Luo, Harald Herrmann, Christine Silberhorn, and Polina Sharapova. “Multimode Integrated SU(1,1) Interferometer.” In <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group, 2021. <a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">https://doi.org/10.1364/cleo_qels.2021.ftu1n.6</a>.","ieee":"A. Ferreri <i>et al.</i>, “Multimode integrated SU(1,1) interferometer,” 2021, doi: <a href=\"https://doi.org/10.1364/cleo_qels.2021.ftu1n.6\">10.1364/cleo_qels.2021.ftu1n.6</a>."},"publication_status":"published","title":"Multimode integrated SU(1,1) interferometer","doi":"10.1364/cleo_qels.2021.ftu1n.6","publisher":"Optica Publishing Group","date_updated":"2025-12-16T11:13:18Z","date_created":"2023-01-26T13:57:47Z","author":[{"first_name":"A.","last_name":"Ferreri","full_name":"Ferreri, A."},{"orcid":"0000-0001-5718-358X","last_name":"Santandrea","id":"55095","full_name":"Santandrea, Matteo","first_name":"Matteo"},{"last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777","first_name":"Michael"},{"orcid":"0000-0003-1008-4976","last_name":"Luo","full_name":"Luo, Kai Hong","id":"36389","first_name":"Kai Hong"},{"last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216","first_name":"Harald"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"full_name":"Sharapova, Polina","id":"60286","last_name":"Sharapova","first_name":"Polina"}],"abstract":[{"text":"<jats:p>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.</jats:p>","lang":"eng"}],"status":"public","type":"conference","publication":"Conference on Lasers and Electro-Optics","language":[{"iso":"eng"}],"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"}],"_id":"40374","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"230"},{"_id":"288"},{"_id":"429"},{"_id":"35"},{"_id":"429"}]},{"author":[{"first_name":"Michael","last_name":"Stefszky","full_name":"Stefszky, Michael","id":"42777"},{"first_name":"Matteo","full_name":"Santandrea, Matteo","id":"55095","orcid":"0000-0001-5718-358X","last_name":"Santandrea"},{"last_name":"vom Bruch","full_name":"vom Bruch, Felix","id":"71245","first_name":"Felix"},{"last_name":"Krapick","full_name":"Krapick, S.","first_name":"S."},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"last_name":"Ricken","full_name":"Ricken, R.","first_name":"R."},{"full_name":"Quiring, V.","last_name":"Quiring","first_name":"V."},{"first_name":"Harald","id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"date_created":"2021-07-21T07:49:22Z","date_updated":"2022-01-06T06:55:40Z","doi":"10.1364/oe.412824","title":"Waveguide resonator with an integrated phase modulator for second harmonic generation","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"ama":"Stefszky M, Santandrea M, vom Bruch F, et al. Waveguide resonator with an integrated phase modulator for second harmonic generation. <i>Optics Express</i>. Published online 2020. doi:<a href=\"https://doi.org/10.1364/oe.412824\">10.1364/oe.412824</a>","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.” <i>Optics Express</i>, 2020. <a href=\"https://doi.org/10.1364/oe.412824\">https://doi.org/10.1364/oe.412824</a>.","ieee":"M. Stefszky <i>et al.</i>, “Waveguide resonator with an integrated phase modulator for second harmonic generation,” <i>Optics Express</i>, Art. no. 1991, 2020, doi: <a href=\"https://doi.org/10.1364/oe.412824\">10.1364/oe.412824</a>.","apa":"Stefszky, M., Santandrea, M., vom Bruch, F., Krapick, S., Eigner, C., Ricken, R., Quiring, V., Herrmann, H., &#38; Silberhorn, C. (2020). Waveguide resonator with an integrated phase modulator for second harmonic generation. <i>Optics Express</i>, Article 1991. <a href=\"https://doi.org/10.1364/oe.412824\">https://doi.org/10.1364/oe.412824</a>","short":"M. Stefszky, M. Santandrea, F. vom Bruch, S. Krapick, C. Eigner, R. Ricken, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express (2020).","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={<a href=\"https://doi.org/10.1364/oe.412824\">10.1364/oe.412824</a>}, 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} }","mla":"Stefszky, Michael, et al. “Waveguide Resonator with an Integrated Phase Modulator for Second Harmonic Generation.” <i>Optics Express</i>, 1991, 2020, doi:<a href=\"https://doi.org/10.1364/oe.412824\">10.1364/oe.412824</a>."},"year":"2020","user_id":"13244","department":[{"_id":"15"},{"_id":"288"}],"_id":"22771","language":[{"iso":"eng"}],"article_number":"1991","type":"journal_article","publication":"Optics Express","status":"public"},{"user_id":"49683","department":[{"_id":"15"}],"_id":"20157","language":[{"iso":"eng"}],"article_number":"28961","type":"journal_article","publication":"Optics Express","status":"public","author":[{"first_name":"Frederik","orcid":"0000-0003-0663-5587","last_name":"Thiele","id":"50819","full_name":"Thiele, Frederik"},{"first_name":"Felix","full_name":"vom Bruch, Felix","id":"71245","last_name":"vom Bruch"},{"last_name":"Quiring","full_name":"Quiring, Victor","first_name":"Victor"},{"last_name":"Ricken","full_name":"Ricken, Raimund","first_name":"Raimund"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Bartley, Tim","id":"49683","last_name":"Bartley","first_name":"Tim"}],"date_created":"2020-10-21T11:03:11Z","date_updated":"2022-10-25T07:40:20Z","doi":"10.1364/oe.399818","title":"Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"ama":"Thiele F, vom Bruch F, Quiring V, et al. Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides. <i>Optics Express</i>. Published online 2020. doi:<a href=\"https://doi.org/10.1364/oe.399818\">10.1364/oe.399818</a>","ieee":"F. Thiele <i>et al.</i>, “Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides,” <i>Optics Express</i>, Art. no. 28961, 2020, doi: <a href=\"https://doi.org/10.1364/oe.399818\">10.1364/oe.399818</a>.","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.” <i>Optics Express</i>, 2020. <a href=\"https://doi.org/10.1364/oe.399818\">https://doi.org/10.1364/oe.399818</a>.","apa":"Thiele, F., vom Bruch, F., Quiring, V., Ricken, R., Herrmann, H., Eigner, C., Silberhorn, C., &#38; Bartley, T. (2020). Cryogenic electro-optic polarisation conversion in titanium in-diffused lithium niobate waveguides. <i>Optics Express</i>, Article 28961. <a href=\"https://doi.org/10.1364/oe.399818\">https://doi.org/10.1364/oe.399818</a>","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={<a href=\"https://doi.org/10.1364/oe.399818\">10.1364/oe.399818</a>}, 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} }","mla":"Thiele, Frederik, et al. “Cryogenic Electro-Optic Polarisation Conversion in Titanium in-Diffused Lithium Niobate Waveguides.” <i>Optics Express</i>, 28961, 2020, doi:<a href=\"https://doi.org/10.1364/oe.399818\">10.1364/oe.399818</a>.","short":"F. Thiele, F. vom Bruch, V. Quiring, R. Ricken, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Optics Express (2020)."},"year":"2020"}]