Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection

Details Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection

2009-07-22

arxiv.org/abs/0907.3839v2

Phys. Rev. A 81, 020303(R) (2010)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.81.020303

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.

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