Electronics Letters

Secure key distribution system based on quantumcryptography

Paul D. Townsend

Published May 12, 1994• 117 citations

Abstract

The secure transmission of cryptographic keys is demonstrated over a 10 km-long optical fibre channel using a technique called ‘quantum cryptography’. Single-photon detector noise and nonideal modulator frequency response lead to error rates of ~6% in the transmitted keys that are corrected using publicly agreed key permutations and parity checks.

DOI: 10.1049/el:19940558

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