Share Email Print
cover

Proceedings Paper • Open Access

Quantum cryptography to satellites for global secure key distribution

Paper Abstract

We have designed and built a free space secure key exchange system using weak laser pulses with polarisation modulation by acousto-optic switching. We have used this system to exchange keys over a 1.2km ground range with absolute security. Building from this initial result we analyse the feasibility of exchanging keys to a low earth orbit satellite.

Paper Details

Date Published: 21 November 2017
PDF: 8 pages
Proc. SPIE 10569, International Conference on Space Optics — ICSO 2000, 105690W (21 November 2017); doi: 10.1117/12.2307891
Show Author Affiliations
John G. Rarity, DERA Sensors and Electronics (United Kingdom)
Philip M. Gorman, DERA Sensors and Electronics (United Kingdom)
Paul Knight, DERA Space (United Kingdom)
Kotska Wallace, DERA Space (United Kingdom)
Paul R. Tapster, DERA Sensors and Electronics (United Kingdom)


Published in SPIE Proceedings Vol. 10569:
International Conference on Space Optics — ICSO 2000
Georges Otrio, Editor(s)

© SPIE. Terms of Use
Back to Top