Coherent frequency-down-conversion interface for quantum repeaters

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.

6 pages, 3 figures

References in corpus (10)

• Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
• Quantum Teleportation Between Distant Matter Qubits
• Experimental demonstration of a BDCZ quantum repeater node
• Long-Distance Entanglement Distribution with Single-Photon Sources
• Remote preparation of an atomic quantum memory
• Erasing Distinguishability Using Quantum Frequency Up-Conversion
• Quantum frequency downconversion experiment
• Tunable Up-Conversion Photon Detector
• Free-running InGaAs/InP Avalanche Photodiode with Active Quenching for Single Photon Counting at Telecom Wavelengths
• Frequency down-conversion for a quantum network

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• Photoluminescence from In0.5Ga0.5As/GaP quantum dots coupled to photonic crystal cavities
• A versatile source of polarisation entangled photons for quantum network applications
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• Bragg-Scattering conversion at telecom wavelengths towards the photon counting regime
• Coherent frequency bridge between visible and telecommunications band of vortex light
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• Heralded quantum repeater based on the scattering of photons off single emitters in weak-coupling regime
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• Single-photon frequency conversion in nonlinear crystals
• Tilted Material in an Optical Cavity: Light-Matter Moiré Effect and Coherent Frequency Conversion
• High-Speed Tunable Microcavities Coupled to Rare-Earth Quantum Emitters
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• Orbital angular momentum photonic quantum interface