Secure quantum communication over arbitrary distances

Hans Aschauer, Hans J. Briegel

Published Aug 10, 2000• 1 citation

Abstract

We give a security proof of quantum cryptography based entirely on entanglement purification. Our proof applies to all possible attacks (individual and coherent) and to arbitrary distances. We prove the security of the obtained quantum channel which may not only be used for quantum key distribution, but also for secure transmission of quantum information.

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