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Proceedings Paper

Practical point-to-point free-space quantum key distribution over .5 km
Author(s): William T. Buttler; Richard J. Hughes; Paul G. Kwiat; Steve K. Lamoreaux; George L. Morgan; Jane E. Nordholt; C. Glen Peterson
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Paper Abstract

We have demonstrated point-to-point single-photon quantum key distribution over a free-space optical path of approximately 475 m under daylight conditions. This represents an increase of > 1,000 times farther than any reported point-to-point demonstration, and > 6 times farther than the previous folded path daylight demonstration. We expect to extend the daylight range to 2 km or more within the next few months. A brief description of the system is given here.

Paper Details

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354778
Show Author Affiliations
William T. Buttler, Los Alamos National Lab. (United States)
Richard J. Hughes, Los Alamos National Lab. (United States)
Paul G. Kwiat, Los Alamos National Lab. (United States)
Steve K. Lamoreaux, Los Alamos National Lab. (United States)
George L. Morgan, Los Alamos National Lab. (United States)
Jane E. Nordholt, Los Alamos National Lab. (United States)
C. Glen Peterson, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)

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