Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 29: Poster – Quantum Technologies I
Q 29.6: Poster
Dienstag, 3. März 2026, 17:00–19:00, Philo 2. OG
Towards storage of c-band heralded photons in a room temperature quantum memory — •Morten Kallevik Straume1,2, Alexander Erl1,2, Henning Mollenhauer1,2, and Janik Wolters1,2 — 1DLR, Institute of Space Research, Berlin — 2TUB, Institute of Physics and Astronomy, Berlin
One of the limiting factors of current global quantum networks is the lack of efficient light-matter interfaces required for quantum repeaters. In recent years, considerable progress has been made in the development of room-temperature quantum memories and compatible narrow-band single-photon sources based on spontaneous parametric down-conversion (SPDC) [1]. Room-temperature quantum repeater platforms are particularly attractive because they avoid the need for cryogenic cooling, operate with significantly lower power consumption, and offer the most favorable scaling potential compared with other state-of-the-art approaches. Here we present our efforts to interface an optical quantum memory [2], utilizing a Λ-scheme implemented in the Cs D1-line, with a matching telecom -c-band heralded bichromatic photon-pair source.
[1] R. Mottola et al. Opt. Express 28, 3159-3170 (2020) [2] L. Esguerra et. al. PRA 107, 042607 (2023)
Keywords: Quantum memory; Quantum communication; Quantum optics