SAMOP 2023 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 33: Quantum Networks II (joint session QI/Q)

QI 33.5: Vortrag

Donnerstag, 9. März 2023, 15:30–15:45, F428

Portable warm vapor memory — •Martin Jutisz1, Elisa Da Ros1, Alexander Erl2,3, Leon Meßner1,3, Luisa Esguerra3, 2, Janik Wolters3, 2, Mustafa Gündoğan1, and Markus Krutzik1, 41Humboldt-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 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 necessary element of quantum repeaters, memories operating in space could advance global quantum communication networks [1].

We will present the overall status of integration and test of a portable rack-mounted system. The implementation of the optical memory is based on electromagnetically induced transparency on the Cesium D1 line at 894 nm. Three lasers are frequency stabilized to provide pump, signal and control pulses. Automated locking is realized via a FPGA-based tool for laser frequency stabilization. The storage platform is provided by a heated Cesium vapour cell in a three-layer magnetic shield. Possibilities of micro integration 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 (BMWK) under grant number 50RP2090.

[1] M. Gündoğan et. al., npj Quantum Information 7, 128 (2021)

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