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Stand-alone mobile quantum memory system
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DOI：10.1103/PhysRevApplied.23.024045.png)
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Abstract
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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 dataprocessing 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 A-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.
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