15 March 2016 Advanced techniques for free-space optical quantum cryptography over water
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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.
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Alexander D. Hill, Bradley Christensen, Paul G. Kwiat, "Advanced techniques for free-space optical quantum cryptography over water", Proc. SPIE 9739, Free-Space Laser Communication and Atmospheric Propagation XXVIII, 973911 (15 March 2016); doi: 10.1117/12.2218270; https://doi.org/10.1117/12.2218270
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