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Proceedings Paper

Long-distance free-space quantum cryptography
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Paper Abstract

Quantum cryptography bases the security of key exchange on the laws of quantum physics and will become the first application of quantum information methods. Here we present the design of novel hardware components which enabled the demonstration of secure key exchange over a 23.4 km free-space link.

Paper Details

Date Published: 13 September 2002
PDF: 7 pages
Proc. SPIE 4917, Quantum Optics in Computing and Communications, (13 September 2002); doi: 10.1117/12.483036
Show Author Affiliations
Christian Kurtsiefer, Ludwig-Maximilians-Univ. Muenchen (Germany)
P. Zarda, Ludwig-Maximilians-Univ. Muenchen and Max-Planck-Institut fuer Quantenoptik (Germany)
M. Halder, Ludwig-Maximilians-Univ. Muenchen (Germany)
Ph. M. Gorman, QinetiQ Ltd. (United Kingdom)
Paul R. Tapster, QinetiQ Ltd. (United Kingdom)
J. G. Rarity, QinetiQ Ltd. (United Kingdom)
Harald Weinfurter, Ludwig-Maximilians-Univ. Muenchen and Max-Planck-Institut fuer Quantenoptik (Germany)


Published in SPIE Proceedings Vol. 4917:
Quantum Optics in Computing and Communications
Songhao Liu; Guangcan Guo; Hoi-Kwong Lo; Nobuyuki Imoto, Editor(s)

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