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Proceedings Paper

Advanced techniques for free-space optical quantum cryptography over water
Author(s): Alexander D. Hill; Bradley Christensen; Paul G. Kwiat
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Paper Abstract

Free-space quantum key distribution (QKD) over water (e.g., ship to ship) may be limited by ship motion and atmospheric effects, such as mode distortion and beam wander due to turbulence. We report on a technique which reduces noise by excluding spatial modes which are less likely to contain QKD signal photons and experimentally demonstrate an improvement in QKD key generation rates in various noise and turbulence regimes.

Paper Details

Date Published: 15 March 2016
PDF: 6 pages
Proc. SPIE 9739, Free-Space Laser Communication and Atmospheric Propagation XXVIII, 973911 (15 March 2016); doi: 10.1117/12.2218270
Show Author Affiliations
Alexander D. Hill, Univ. of Illinois at Urbana-Champaign (United States)
Bradley Christensen, Univ. of Illinois at Urbana-Champaign (United States)
Paul G. Kwiat, Univ. of Illinois at Urbana-Champaign (United States)


Published in SPIE Proceedings Vol. 9739:
Free-Space Laser Communication and Atmospheric Propagation XXVIII
Hamid Hemmati; Don M. Boroson, Editor(s)

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