Title :
Secure key exchange over 1.9 km free-space range using quantum cryptography
Author :
Rarity, J.G. ; Gorman, P.M. ; Tapster, P.R.
Author_Institution :
DERA, Malvern, UK
fDate :
4/12/2001 12:00:00 AM
Abstract :
Secure key exchange is demonstrated over a 1.9 km free-space range using the technique of quantum cryptography. The system is designed to be robust against transmission losses >20 dB. This is a first step towards exchanging keys to a low earth orbit satellite
Keywords :
optical communication; optical links; optical losses; public key cryptography; quantum cryptography; 1.9 km; 20 dB; free-space range quantum cryptography; low earth orbit satellite; quantum cryptography; secure key exchange; transmission losses;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010334
