Title :
Secure key distribution system based on quantum cryptography
Author :
Townsend, Paul D.
Author_Institution :
BT Labs., Ipswich
fDate :
5/12/1994 12:00:00 AM
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
Keywords :
optical communication; optical fibres; optical modulation; public key cryptography; 10 km; error rates; nonideal modulator frequency response; optical fibre channel; parity checks; publicly agreed key permutations; quantum cryptography; secure key distribution system; secure transmission; single-photon detector noise;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940558
