[{"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"}],"doi":"10.1364/oe.484126","title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","keyword":["Atomic and Molecular Physics","and Optics"],"user_id":"63231","type":"journal_article","publication":"Optics Express","article_number":"23140","issue":"14","volume":31,"intvolume":"        31","author":[{"full_name":"Babel, Silia","first_name":"Silia","last_name":"Babel","id":"63231","orcid":"https://orcid.org/0000-0002-1568-2580"},{"first_name":"Laura","full_name":"Bollmers, Laura","last_name":"Bollmers","id":"61375"},{"id":"59545","last_name":"Massaro","first_name":"Marcello","full_name":"Massaro, Marcello","orcid":"0000-0002-2539-7652"},{"orcid":"0000-0003-1008-4976","first_name":"Kai Hong","full_name":"Luo, Kai Hong","id":"36389","last_name":"Luo"},{"last_name":"Stefszky","id":"42777","first_name":"Michael","full_name":"Stefszky, Michael"},{"full_name":"Pegoraro, Federico","first_name":"Federico","last_name":"Pegoraro","id":"88928"},{"first_name":"Philip","full_name":"Held, Philip","id":"68236","last_name":"Held"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","last_name":"Eigner","full_name":"Eigner, Christof","first_name":"Christof"},{"full_name":"Brecht, Benjamin","first_name":"Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Laura","full_name":"Padberg, Laura","last_name":"Padberg","id":"40300"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}],"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>","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>","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>.","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>.","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} }","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>.","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)."},"publication_status":"published","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1094-4087"]},"year":"2023","status":"public","date_created":"2023-07-03T14:08:36Z","publisher":"Optica Publishing Group","date_updated":"2023-07-05T07:58:31Z","_id":"45850"},{"department":[{"_id":"15"},{"_id":"170"},{"_id":"569"},{"_id":"706"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"user_id":"16199","publication_status":"published","citation":{"short":"K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).","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} }","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>.","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>.","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>.","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>","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>"},"doi":"10.1103/physreva.104.043707","project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"_id":"72","name":"TRR 142 - C2: TRR 142 - Subproject C2"}],"author":[{"orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong","first_name":"Kai Hong","last_name":"Luo","id":"36389"},{"orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","first_name":"Matteo","last_name":"Santandrea","id":"55095"},{"full_name":"Stefszky, Michael","first_name":"Michael","last_name":"Stefszky","id":"42777"},{"orcid":"0000-0002-5844-3205","last_name":"Sperling","id":"75127","first_name":"Jan","full_name":"Sperling, Jan"},{"id":"59545","last_name":"Massaro","full_name":"Massaro, Marcello","first_name":"Marcello","orcid":"0000-0002-2539-7652"},{"first_name":"Alessandro","full_name":"Ferreri, Alessandro","id":"65609","last_name":"Ferreri"},{"last_name":"Sharapova","id":"60286","first_name":"Polina","full_name":"Sharapova, Polina"},{"first_name":"Harald","full_name":"Herrmann, Harald","last_name":"Herrmann","id":"216"},{"id":"26263","last_name":"Silberhorn","full_name":"Silberhorn, Christine","first_name":"Christine"}],"title":"Quantum optical coherence: From linear to nonlinear interferometers","date_updated":"2023-04-20T15:08:25Z","_id":"26889","status":"public","year":"2021","publication_identifier":{"issn":["2469-9926","2469-9934"]},"type":"journal_article","language":[{"iso":"eng"}],"publication":"Physical Review A","date_created":"2021-10-26T12:42:16Z"},{"title":"Improving SPDC single-photon sources via extended heralding and feed-forward control","author":[{"orcid":"0000-0002-2539-7652","last_name":"Massaro","id":"59545","first_name":"Marcello","full_name":"Massaro, Marcello"},{"full_name":"Meyer-Scott, Evan","first_name":"Evan","last_name":"Meyer-Scott"},{"last_name":"Montaut","full_name":"Montaut, Nicola","first_name":"Nicola"},{"id":"216","last_name":"Herrmann","full_name":"Herrmann, Harald","first_name":"Harald"},{"full_name":"Silberhorn, Christine","first_name":"Christine","id":"26263","last_name":"Silberhorn"}],"doi":"10.1088/1367-2630/ab1ec3","citation":{"apa":"Massaro, M., Meyer-Scott, E., Montaut, N., Herrmann, H., &#38; Silberhorn, C. (2019). Improving SPDC single-photon sources via extended heralding and feed-forward control. <i>New Journal of Physics</i>, Article 053038. <a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">https://doi.org/10.1088/1367-2630/ab1ec3</a>","ama":"Massaro M, Meyer-Scott E, Montaut N, Herrmann H, Silberhorn C. Improving SPDC single-photon sources via extended heralding and feed-forward control. <i>New Journal of Physics</i>. Published online 2019. doi:<a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">10.1088/1367-2630/ab1ec3</a>","ieee":"M. Massaro, E. Meyer-Scott, N. Montaut, H. Herrmann, and C. Silberhorn, “Improving SPDC single-photon sources via extended heralding and feed-forward control,” <i>New Journal of Physics</i>, Art. no. 053038, 2019, doi: <a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">10.1088/1367-2630/ab1ec3</a>.","chicago":"Massaro, Marcello, Evan Meyer-Scott, Nicola Montaut, Harald Herrmann, and Christine Silberhorn. “Improving SPDC Single-Photon Sources via Extended Heralding and Feed-Forward Control.” <i>New Journal of Physics</i>, 2019. <a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">https://doi.org/10.1088/1367-2630/ab1ec3</a>.","bibtex":"@article{Massaro_Meyer-Scott_Montaut_Herrmann_Silberhorn_2019, title={Improving SPDC single-photon sources via extended heralding and feed-forward control}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">10.1088/1367-2630/ab1ec3</a>}, number={053038}, journal={New Journal of Physics}, author={Massaro, Marcello and Meyer-Scott, Evan and Montaut, Nicola and Herrmann, Harald and Silberhorn, Christine}, year={2019} }","mla":"Massaro, Marcello, et al. “Improving SPDC Single-Photon Sources via Extended Heralding and Feed-Forward Control.” <i>New Journal of Physics</i>, 053038, 2019, doi:<a href=\"https://doi.org/10.1088/1367-2630/ab1ec3\">10.1088/1367-2630/ab1ec3</a>.","short":"M. Massaro, E. Meyer-Scott, N. Montaut, H. Herrmann, C. Silberhorn, New Journal of Physics (2019)."},"user_id":"59545","publication_status":"published","department":[{"_id":"288"}],"publication":"New Journal of Physics","date_created":"2021-09-24T11:42:27Z","type":"journal_article","publication_identifier":{"issn":["1367-2630"]},"year":"2019","language":[{"iso":"eng"}],"status":"public","_id":"25038","article_number":"053038","date_updated":"2022-01-06T06:56:44Z"},{"citation":{"ieee":"K.-H. Luo <i>et al.</i>, “Counter-propagating photon pair generation in a nonlinear waveguide,” <i>Optics Express</i>, Art. no. 3215, 2019, doi: <a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>.","chicago":"Luo, Kai-Hong, Vahid Ansari, Marcello Massaro, Matteo Santandrea, Christof Eigner, Raimund Ricken, Harald Herrmann, and Christine Silberhorn. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” <i>Optics Express</i>, 2019. <a href=\"https://doi.org/10.1364/oe.378789\">https://doi.org/10.1364/oe.378789</a>.","apa":"Luo, K.-H., Ansari, V., Massaro, M., Santandrea, M., Eigner, C., Ricken, R., Herrmann, H., &#38; Silberhorn, C. (2019). Counter-propagating photon pair generation in a nonlinear waveguide. <i>Optics Express</i>, Article 3215. <a href=\"https://doi.org/10.1364/oe.378789\">https://doi.org/10.1364/oe.378789</a>","ama":"Luo K-H, Ansari V, Massaro M, et al. Counter-propagating photon pair generation in a nonlinear waveguide. <i>Optics Express</i>. Published online 2019. doi:<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>","short":"K.-H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H. Herrmann, C. Silberhorn, Optics Express (2019).","bibtex":"@article{Luo_Ansari_Massaro_Santandrea_Eigner_Ricken_Herrmann_Silberhorn_2019, title={Counter-propagating photon pair generation in a nonlinear waveguide}, DOI={<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>}, number={3215}, journal={Optics Express}, author={Luo, Kai-Hong and Ansari, Vahid and Massaro, Marcello and Santandrea, Matteo and Eigner, Christof and Ricken, Raimund and Herrmann, Harald and Silberhorn, Christine}, year={2019} }","mla":"Luo, Kai-Hong, et al. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” <i>Optics Express</i>, 3215, 2019, doi:<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>."},"publication_status":"published","user_id":"55095","department":[{"_id":"288"}],"title":"Counter-propagating photon pair generation in a nonlinear waveguide","author":[{"last_name":"Luo","full_name":"Luo, Kai-Hong","first_name":"Kai-Hong"},{"last_name":"Ansari","full_name":"Ansari, Vahid","first_name":"Vahid"},{"orcid":"0000-0002-2539-7652","first_name":"Marcello","full_name":"Massaro, Marcello","id":"59545","last_name":"Massaro"},{"full_name":"Santandrea, Matteo","first_name":"Matteo","id":"55095","last_name":"Santandrea","orcid":"0000-0001-5718-358X"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","first_name":"Christof","full_name":"Eigner, Christof"},{"full_name":"Ricken, Raimund","first_name":"Raimund","last_name":"Ricken"},{"last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald","first_name":"Harald"},{"id":"26263","last_name":"Silberhorn","full_name":"Silberhorn, Christine","first_name":"Christine"}],"doi":"10.1364/oe.378789","_id":"26237","article_number":"3215","date_updated":"2022-01-06T06:57:18Z","date_created":"2021-10-15T09:39:24Z","publication":"Optics Express","language":[{"iso":"eng"}],"type":"journal_article","year":"2019","publication_identifier":{"issn":["1094-4087"]},"status":"public"},{"user_id":"30525","has_accepted_license":"1","doi":"10.1038/s41377-019-0182-6","project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - Subproject C2","_id":"72"},{"name":"TRR 142 - Subproject C5","_id":"75"}],"file":[{"creator":"zentgraf","file_size":748999,"file_name":"LSA_Georgi_2019_Quantum metasurface.pdf","content_type":"application/pdf","access_level":"closed","file_id":"12921","date_created":"2019-08-14T07:11:36Z","date_updated":"2019-08-14T07:11:36Z","relation":"main_file","success":1}],"title":"Metasurface interferometry toward quantum sensors","volume":8,"page":"70","type":"journal_article","ddc":["530"],"publication":"Light: Science & Applications","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"publication_status":"published","citation":{"chicago":"Georgi, Philip, Marcello Massaro, Kai Hong Luo, Basudeb Sain, Nicola Montaut, Harald Herrmann, Thomas Weiss, Guixin Li, Christine Silberhorn, and Thomas Zentgraf. “Metasurface Interferometry toward Quantum Sensors.” <i>Light: Science &#38; Applications</i> 8 (2019): 70. <a href=\"https://doi.org/10.1038/s41377-019-0182-6\">https://doi.org/10.1038/s41377-019-0182-6</a>.","ieee":"P. Georgi <i>et al.</i>, “Metasurface interferometry toward quantum sensors,” <i>Light: Science &#38; Applications</i>, vol. 8, p. 70, 2019, doi: <a href=\"https://doi.org/10.1038/s41377-019-0182-6\">10.1038/s41377-019-0182-6</a>.","ama":"Georgi P, Massaro M, Luo KH, et al. Metasurface interferometry toward quantum sensors. <i>Light: Science &#38; Applications</i>. 2019;8:70. doi:<a href=\"https://doi.org/10.1038/s41377-019-0182-6\">10.1038/s41377-019-0182-6</a>","apa":"Georgi, P., Massaro, M., Luo, K. H., Sain, B., Montaut, N., Herrmann, H., Weiss, T., Li, G., Silberhorn, C., &#38; Zentgraf, T. (2019). Metasurface interferometry toward quantum sensors. <i>Light: Science &#38; Applications</i>, <i>8</i>, 70. <a href=\"https://doi.org/10.1038/s41377-019-0182-6\">https://doi.org/10.1038/s41377-019-0182-6</a>","short":"P. Georgi, M. Massaro, K.H. Luo, B. Sain, N. Montaut, H. Herrmann, T. Weiss, G. Li, C. Silberhorn, T. Zentgraf, Light: Science &#38; Applications 8 (2019) 70.","mla":"Georgi, Philip, et al. “Metasurface Interferometry toward Quantum Sensors.” <i>Light: Science &#38; Applications</i>, vol. 8, 2019, p. 70, doi:<a href=\"https://doi.org/10.1038/s41377-019-0182-6\">10.1038/s41377-019-0182-6</a>.","bibtex":"@article{Georgi_Massaro_Luo_Sain_Montaut_Herrmann_Weiss_Li_Silberhorn_Zentgraf_2019, title={Metasurface interferometry toward quantum sensors}, volume={8}, DOI={<a href=\"https://doi.org/10.1038/s41377-019-0182-6\">10.1038/s41377-019-0182-6</a>}, journal={Light: Science &#38; Applications}, author={Georgi, Philip and Massaro, Marcello and Luo, Kai Hong and Sain, Basudeb and Montaut, Nicola and Herrmann, Harald and Weiss, Thomas and Li, Guixin and Silberhorn, Christine and Zentgraf, Thomas}, year={2019}, pages={70} }"},"intvolume":"         8","author":[{"full_name":"Georgi, Philip","first_name":"Philip","last_name":"Georgi"},{"id":"59545","last_name":"Massaro","first_name":"Marcello","full_name":"Massaro, Marcello","orcid":"0000-0002-2539-7652"},{"orcid":"0000-0003-1008-4976","full_name":"Luo, Kai Hong","first_name":"Kai Hong","id":"36389","last_name":"Luo"},{"last_name":"Sain","first_name":"Basudeb","full_name":"Sain, Basudeb"},{"first_name":"Nicola","full_name":"Montaut, Nicola","last_name":"Montaut"},{"id":"216","last_name":"Herrmann","first_name":"Harald","full_name":"Herrmann, Harald"},{"last_name":"Weiss","first_name":"Thomas","full_name":"Weiss, Thomas"},{"first_name":"Guixin","full_name":"Li, Guixin","last_name":"Li"},{"id":"26263","last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine"},{"last_name":"Zentgraf","id":"30525","first_name":"Thomas","full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101"}],"date_updated":"2022-01-06T06:51:26Z","_id":"12919","file_date_updated":"2019-08-14T07:11:36Z","status":"public","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2047-7538"]},"year":"2019","funded_apc":"1","date_created":"2019-08-14T06:59:23Z"},{"status":"public","type":"journal_article","publication_identifier":{"issn":["1094-4087"]},"year":"2019","language":[{"iso":"eng"}],"publication":"Optics Express","date_created":"2021-10-12T07:52:46Z","date_updated":"2023-02-01T10:13:15Z","article_number":"3215","_id":"26052","doi":"10.1364/oe.378789","project":[{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"}],"author":[{"orcid":"0000-0003-1008-4976","first_name":"Kai Hong","full_name":"Luo, Kai Hong","id":"36389","last_name":"Luo"},{"last_name":"Ansari","first_name":"Vahid","full_name":"Ansari, Vahid"},{"orcid":"0000-0002-2539-7652","first_name":"Marcello","full_name":"Massaro, Marcello","last_name":"Massaro","id":"59545"},{"orcid":"0000-0001-5718-358X","first_name":"Matteo","full_name":"Santandrea, Matteo","id":"55095","last_name":"Santandrea"},{"full_name":"Eigner, Christof","first_name":"Christof","id":"13244","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"last_name":"Ricken","full_name":"Ricken, Raimund","first_name":"Raimund"},{"full_name":"Herrmann, Harald","first_name":"Harald","last_name":"Herrmann","id":"216"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"}],"title":"Counter-propagating photon pair generation in a nonlinear waveguide","user_id":"36389","publication_status":"published","citation":{"ieee":"K. H. Luo <i>et al.</i>, “Counter-propagating photon pair generation in a nonlinear waveguide,” <i>Optics Express</i>, Art. no. 3215, 2019, doi: <a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>.","chicago":"Luo, Kai Hong, Vahid Ansari, Marcello Massaro, Matteo Santandrea, Christof Eigner, Raimund Ricken, Harald Herrmann, and Christine Silberhorn. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” <i>Optics Express</i>, 2019. <a href=\"https://doi.org/10.1364/oe.378789\">https://doi.org/10.1364/oe.378789</a>.","ama":"Luo KH, Ansari V, Massaro M, et al. Counter-propagating photon pair generation in a nonlinear waveguide. <i>Optics Express</i>. Published online 2019. doi:<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>","apa":"Luo, K. H., Ansari, V., Massaro, M., Santandrea, M., Eigner, C., Ricken, R., Herrmann, H., &#38; Silberhorn, C. (2019). Counter-propagating photon pair generation in a nonlinear waveguide. <i>Optics Express</i>, Article 3215. <a href=\"https://doi.org/10.1364/oe.378789\">https://doi.org/10.1364/oe.378789</a>","short":"K.H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H. Herrmann, C. Silberhorn, Optics Express (2019).","bibtex":"@article{Luo_Ansari_Massaro_Santandrea_Eigner_Ricken_Herrmann_Silberhorn_2019, title={Counter-propagating photon pair generation in a nonlinear waveguide}, DOI={<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>}, number={3215}, journal={Optics Express}, author={Luo, Kai Hong and Ansari, Vahid and Massaro, Marcello and Santandrea, Matteo and Eigner, Christof and Ricken, Raimund and Herrmann, Harald and Silberhorn, Christine}, year={2019} }","mla":"Luo, Kai Hong, et al. “Counter-Propagating Photon Pair Generation in a Nonlinear Waveguide.” <i>Optics Express</i>, 3215, 2019, doi:<a href=\"https://doi.org/10.1364/oe.378789\">10.1364/oe.378789</a>."}}]