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SAMOP 2023 – scientific programme

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QI: Fachverband Quanteninformation

QI 23: Poster II (joint session QI/Q)

QI 23.55: Poster

Wednesday, March 8, 2023, 16:30–19:00, Empore Lichthof

Compact and portable atomic vapor memory for single photon storage — •Alexander Erl1,2,3, Leon Meßner3,2, Martin Jutisz3, Luisa Esguerra2,1, Elizabeth Robertson2,1, Norman Vinzenz Ewald2, Elisa Da Ros3, Mustafa Gündoğan3, Markus Krutzik3,4, and Janik Wolters2,11Technische Universität Berlin, Institut für Optik und Atomare Physik, Berlin, Germany — 2Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Optische Sensorsysteme, Berlin, Germany — 3Humboldt-Universität zu Berlin, Institut für Physik, Berlin, Germany — 4Ferdinand-Braun-Institut, Institut für Höchstfrequenztechnik, Berlin, Germany

Quantum memories for single photons are a key component of quantum repeaters for sattelite-based quantum communication over long distances [1,2]. Memories on sattelites for feasible quantum repeater networks must be compact, maintainable and scalable. Reliable storage and retrieval of photons on demand would make a significant contribution to memory assisted quantum key distribution.
We present a compact, rack-mounted, stand-alone warm vapor quantum memory based on electromagnetically induced transparency (EIT) on the Cs D1 line at 895 nm [3]. This mobile setup realizes high fidelity light storage at single photon level with minimal readout noise level.
[1] M. Gündoğan et. al., npj Quantum Information 7, 128 (2021)
[2] N. Sangouard et. al., arXiv:0906.2699 (2009)
[3] L. Esguera, et al., arXiv:2203.06151 (2022)

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