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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster – Quantum Information Technologies (joint session Q/QI)
Q 62.28: Poster
Donnerstag, 13. März 2025, 17:00–19:00, Tent
Developing a photon-pair source for quantum repeaters — •Henning Mollenhauer1,2, Leon Meßner2, Helen Chrzanowski3, and Janik Wolters1,2 — 1DLR Berlin-Adlershof, Berlin — 2Technische Universität Berlin — 3Humboldt-Universität zu Berlin
We are reporting on the development of a photon-pair source for signal and idler photons at 894nm and 1550nm. The underlying process is spontaneous parametric down-conversion (SPDC) inside a periodically poled KTP crystal. To achieve spectrally pure and narrow-band characteristics for signal and idler photons our ppKTP crystal is designed as a monolithic cavity [1]. Pulsed pump light at 567nm for the SPDC process is produced in sum frequency generation from the target wavelengths. For the future we plan to interface our photon source with a single-photon quantum memory [2], to build a demonstrator of a quantum repeater. [1] Mottola et al. (2020) [2] Jutisz et al. (2024)
Keywords: SPDC