Coherent frequency-down-conversion interface for quantum repeaters
- 4 October 2010
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 18 (21) , 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.Keywords
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This publication has 26 references indexed in Scilit:
- Mapping multiple photonic qubits into and out of one solid-state atomic ensembleNature Communications, 2010
- Experimental demonstration of a BDCZ quantum repeater nodeNature, 2008
- Long-distance entanglement distribution with single-photon sourcesPhysical Review A, 2007
- Quantum Repeaters with Photon Pair Sources and Multimode MemoriesPhysical Review Letters, 2007
- Low jitter up-conversion detectors for telecom wavelength GHz QKDNew Journal of Physics, 2006
- A photonic quantum information interfaceNature, 2005
- Efficient single-photon counting at 155 µm by means of frequency upconversionOptics Letters, 2004
- Long-distance quantum communication with atomic ensembles and linear opticsNature, 2001
- Quantum Repeaters: The Role of Imperfect Local Operations in Quantum CommunicationPhysical Review Letters, 1998
- 15-µm-band wavelength conversion based on difference-frequency generation in LiNbO_3 waveguides with integrated coupling structuresOptics Letters, 1998