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Creators/Authors contains: "Cheng, S_W L"

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  1. ; ; ; ; (, Physical Review A)
    We experimentally study the ability of a broadband “loop-and-switch” type quantum memory device to store entanglement. We find that one active loop-based memory and one passive fiber delay line can be used to faithfully store two polarization-entangled photons and demonstrate a rudimentary entanglement distribution protocol. The entangled photons are produced by a conventional spontaneous parametric down-conversion source with center wavelengths at 780 nm and bandwidths of ∼10 THz, while the memory has an even wider operational bandwidth that is enabled by the weakly dispersive nature of the Pockels effect used for polarization-insensitive active switching. These results help demonstrate the utility of loop-based quantum memories for quantum networking applications. 
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