Experimental Synchronization of Independent Entangled Photon Sources

Abstract

Realistic linear quantum information processing necessitates the ability to synchronously generate entangled photon pairs either at the same or at distant locations. Here, we report the experimental realization of synchronized generation of independent entangled photon pairs. The quality of synchronization is confirmed by observing a violation of Bell's inequality with 3.2 standard deviations in an entanglement swapping experiment. The techniques developed in our experiment will be of great importance for future linear optical realization of quantum repeaters and quantum computation.

4pages, 3 figures

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• Quantum teleportation over the Swisscom telecommunication network
• High coherence photon pair source for quantum communication
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• Synchronized Independent Narrow-band Single Photons and Efficient Generation of Photonic Entanglement
• Entanglement swapping and quantum correlations via Elegant Joint Measurements
• Experimental demonstration of nonbilocality with truly independent sources and strict locality constraints
• High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources
• Quantum Locality
• Entanglement Swapping with Independent Sources over an Optical Fibre Network
• Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources
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• Efficient decoherence-free entanglement distribution over lossy quantum channels
• Dynamical entanglement purification using chains of atoms and optical cavities
• Remote entanglement distribution in a quantum network via multinode indistinguishability of photons
• A universal, plug-and-play synchronisation scheme for practical quantum networks
• Non-Gaussian entanglement swapping
• Time-frequency encoded single-photon sources and broadband quantum memories based on a tunable one-dimensional atom
• Entangling independent particles by path identity
• Entangling single photons on a beamsplitter
• Dynamical quantum repeater using cavity-QED and optical coherent states
• Effects of frequency correlation in linear optical entangling gate operated with independent photons
• Quantum teleportation with independent sources over an optical fibre network
• Scalable Timing Coordination of Bell State Analyzers in Quantum Networks