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Title

Coherent frequency-down-conversion interface for quantum repeaters

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Published in Optics Express. 2010, vol. 18, no. 21, p. 22099-22104
Abstract 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.
Stable URL http://archive-ouverte.unige.ch/unige:12204
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Deposited on : 2010-10-21

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