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  • Suppression of dark-state polariton collapses in a cold-atom quantum memory [Elektronski vir]
    Gosar, Katja, (fizika) ...
    We observe dark-state polariton collapses and revivals in a quantum memory based on electromagnetically induced transparency on a cloud of cold cesium atoms in a magnetic field. Using σ+-polarized ... signal and control beams in the direction of the magnetic field, we suppress the dark-state polariton collapses by polarizing the atoms towards one of the stretched Zeeman states and optimizing the frequency detuning of the control beam. In this way, we demonstrate a quantum memory with only partial dark-state polariton collapses, making the memory usable at any storage time, not only at discretized times of revivals. We obtain a storage time of more than 400 µs , which is ten times longer than what we can achieve by trying to annul the magnetic field.
    Vir: Physical review. A. - ISSN 2469-9934 (Vol. 108, iss. 3, [article no.] 032618, Sep. 2023, str. 032618-1-032618-6)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2023
    Jezik - angleški
    COBISS.SI-ID - 166512131

    Povezava(-e):

    https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.032618
    DOI

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