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International Conference on Biomedical Engineering and Informatics (BMEI)

A quantum repeater in infrared quantum communication system

Yuru Liu, Luhua Zhang, Xuehui Zhang

Published Oct 1, 2010• 4 citations
Publisher

Abstract

We present a scheme of quantum repeater for infrared quantum communication system. It is to connect a string of entangled pairs of photons. The scheme can be applied to a quantum repeater protocol. It can be used for long distance quantum communication and can be realized with current or near future experimental technology.
DOI
10.1109/bmei.2010.5639341

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Quantum communication networks enable secure transmission of information between remote sites. However, at present, photon losses in the optical fiber limit communication distances to less than 150 kilometers. The quantum repeater idea allows extension of these distances. In practice, it involves the ability to store quantum information for a long time in atomic systems and coherently transfer quantum states between matter and light. Previously known schemes involved atomic Raman transitions in the UV or near-infrared and suffered from severe loss in optical fiber that precluded long-distance quantum communication.