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Coherent frequency-down-conversion interface for quantum repeaters
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DOI：10.1364/OE.18.022099.png)
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Abstract
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We report a coherence-preserving photon frequency down-conversion experiment based on difference-frequency generation in a periodically poled Lithium niobate waveguide, at the single-photon level. The coherence of the process has been demonstrated by measuring the phase coherence of pseudo single-photon time-bin qubits after frequency conversion with an interference visibility of > 96 %. This interface could be of interest for quantum repeater based hybrid networks. (C) 2010 Optical Society of America
Keywords:
SINGLE-PHOTON DETECTION
UP-CONVERSION
COMMUNICATION
TELEPORTATION
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3.3
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6.1W
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14.3W
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