Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 38: Poster IV
Q 38.31: Poster
Mittwoch, 13. März 2024, 17:00–19:00, KG I Foyer
A portable warm vapour quantum memory — •Martin Jutisz1, Alexander Erl2,3, Elisa Da Ros1, Luisa Esguerra3, 2, Janik Wolters3, 2, Mustafa Gündoğan1, and Markus Krutzik1,4 — 1Humboldt-Universität zu Berlin, Berlin, Germany — 2Technische Universität Berlin, Berlin, Germany — 3Deutsches Zentrum für Luft- und Raumfahrt, Berlin, Germany — 4Ferdinand-Braun-Institut (FBH), Berlin, Germany
Warm vapor quantum memories have seen significant progress in terms of efficiency and storage time in recent years. Their low complexity makes them a promising candidate for operation in non-lab environments including space-based applications. As a necessary element of quantum repeaters, memories operating in space could advance global quantum communication networks [1].
We will present the implementation and performance of a portable rack-mounted stand alone system, that includes also the laser system and control electronics. The optical memory is based on long-lived hyperfine ground states of Cesium which are connected to an excited state via the D1 line at 895 nm in a lambda-configuration. The stability of the memory efficiency and fidelity is demonstrated at single photon level. Different methods to micro integrate this platform are also being investigated.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number 50RP2090 & 50WM2347.
[1] M. Gündoğan et. al., npj Quantum Information 7, 128 (2021)