Secure key exchange over 1.9 km free-space range using quantum cryptography
- 1 January 2001
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 37 (8), 512-514
- https://doi.org/10.1049/el:20010334
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
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