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Q: Fachverband Quantenoptik und Photonik
Q 39: Posters: Quantum Optics and Photonics III
Q 39.25: Poster
Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof
Towards a heralded single-photon plug-and-play source — •Christian Kießler1, Harald Herrmann1, Hauke Conradi2, Moritz Kleinert2, Raimund Ricken1, Victor Quiring1, and Christine Silberhorn1 — 1Universität Paderborn, Warburger Str. 100, 33098 Paderborn — 2Fraunhofer HHI Berlin, Einsteinufer 37, 10587 Berlin
To use quantum technologies and its applications practically, integrated quantum devices must be available. Requirements like stability, affordability, miniaturized design, low loss and fiber compatibility are essential for these devices.
Here, we present our first studies on a polymer embedded LiNbO3 crystal, which is designed as an integrated hybrid heralded single-photon source based on spontaneous parametric down-conversion. Due to the large nonlinearity and the possibility of producing low-loss waveguides, periodically poled Ti:LiNbO3 waveguides are used. The final embedding of the LiNbO3 source into a polymer board, which contains further optical components like waveguides, filters and fiber connections, leads to a practicably usable integrated quantum source.
At this point we focus on optimizing the LiNbO3 source to reduce the crystal-polymer interface losses, by studying the mode profile and the interface itself. Furthermore, the exact arrangement of the waveguides and the size of the source are examined.