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Opt Express. 2011 May 23;19(11):10387-409. doi: 10.1364/OE.19.010387.

Field test of quantum key distribution in the Tokyo QKD Network.

Author information

  • 1Quantum ICT Laboratory, National Institute of Information and Communication Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan. psasaki@nict.co.jp

Abstract

A secure communication network with quantum key distribution in a metropolitan area is reported. Six different QKD systems are integrated into a mesh-type network. GHz-clocked QKD links enable us to demonstrate the world-first secure TV conferencing over a distance of 45km. The network includes a commercial QKD product for long-term stable operation, and application interface to secure mobile phones. Detection of an eavesdropper, rerouting into a secure path, and key relay via trusted nodes are demonstrated in this network.

PMID:
21643295
[PubMed]
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