Stand-alone mobile quantum memory system
M. Jutisz1, A. Erl2,3, J. Wolters2,3,4, M. Gündoğan1, and M. Krutzik1,5
Published in:
Phys. Rev. Applied, vol. 23, no. 2, pp. 024045, doi:10.1103/PhysRevApplied.23.024045 (2025).
Abstract:
We present the implementation and performance analysis of a portable rack-mounted stand-alone warm-vapor quantum memory system that also includes the laser package, control electronics, and data-processing hardware. 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 Λ-configuration. The memory is operated with weak coherent pulses containing on average <1 photons per pulse. The long-term stability of the memory efficiency and storage fidelity is demonstrated at the single-photon level together with operation in a nonlaboratory environment.
1 Institut für Physik and Integrative Research Institute for the Sciences (IRIS) Adlershof, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
2 Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Rutherfordstraße 2, 12489 Berlin, Germany
3 Technische Universität Berlin, Institute for Optics and Atomic Physics, Hardenbergstraße 36, 10623 Berlin, Germany
4 Advanced Quantum Light Sources (AQLS), Guerickestraße 12, 10587 Berlin, Germany
5 Ferdinand-Braun-Institut (FBH), Gustav-Kirchoff-Straße 4, 12489 Berlin, Germany
Physics Subject Headings:
Fine & hyperfine structure; Photonics; Quantum information with atoms & light; Quantum memories; Quantum networks; Quantum repeaters; Alkali metals; Atomic gases
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
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