Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection

Abstract

Quantum repeaters based on atomic ensemble quantum memories are promising candidates for achieving scalable distribution of entanglement over long distances. Recently, important experimental progress has been made towards their implementation. However, the entanglement rates and scalability of current approaches are limited by relatively low retrieval and single-photon detector efficiencies. We propose a scheme, which makes use of fluorescent detection of stored excitations to significantly increase the efficiency of connection and hence the rate. Practical performance and possible experimental realizations of the new protocol are discussed.

4 pages, 3 figures

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• Quantum Repeaters based on Deterministic Storage of a Single Photon in distant Atomic Ensembles
• Robust Distant Entanglement Generation Using Coherent Multiphoton Scattering
• Distributed quantum information processing via single atom driving
• Hybrid Quantum Repeater Protocol With Fast Local Processing