Secure key distribution system based on quantumcryptography
Paul D. Townsend · Electronics Letters · 1994
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.