Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 51: Poster: Quantum Optics and Photonics IV
Q 51.61: Poster
Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal
Towards integrating superconducting detectors on lithium niobate waveguides — •Jan Philipp Höpker1, Frederik Thiele1, Moritz Bartnick1, Stephan Krapick1, Evan Meyer-Scott1, Nicola Montaut1, Harald Hermann1, Raimund Ricken1, Viktor Quiring1, Torsten Meier1, Adriana Lita2, Varun Verma2, Thomas Gerrits2, Richard Mirin2, Sae Woo Nam2, Christine Silberhorn1, and Tim Bartley1 — 1Universität Paderborn, Integrierte Quantenoptik, Warburger Str. 100, D-33098 Paderborn — 2National Institute of Standards and Technology, 325 Broadway, Boulder, CO, 80305, USA
Superconducting photon detectors and integrated optics have enabled a variety of quantum optical experiments. Lithium niobate is a promising platform for quantum photonics thanks to its large second order nonlinear susceptibility, large electro-optic coefficient, and low guiding losses. Therefore, lithium niobate works very well for fast modulation and single photon sources. However, detecting single photons inside lithium niobate waveguides remains a challenge. Fiber-coupled superconducting nanowire single photon detectors (SNSPDs) and transition edge sensors (TESs) show outstanding quantum efficiency with low dark count rates. We have taken the initial steps in depositing these detectors on lithium niobate waveguides, including room temperature absorption measurements, cryogenic flood illumination tests, and the investigation of fiber-pigtailing for cryogenic environments.