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Secure key distribution system based on quantum cryptography

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1 Author(s)
Townsend, P.D. ; BT Labs., Ipswich

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

Published in:

Electronics Letters  (Volume:30 ,  Issue: 10 )