Scintillation has minimal impact on far-field Bennett-Brassard 1984 protocol quantum key distribution
Name
Shapiro-2011-Scintillation has minimal impact on far-field Bennett-Brassard 1984 protocol.pdf
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203.13 KB
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Author(s)
Shapiro, Jeffrey H.
Date Issued
September 2011
Journal
Physical Review A
Publisher
American Physical Society (APS)
Citation
Shapiro, Jeffrey. “Scintillation Has Minimal Impact on Far-field Bennett-Brassard 1984 Protocol Quantum Key Distribution.” Physical Review A 84.3 (2011): n. pag. Web. 16 Feb. 2012. © 2011 American Physical Society
Version
Final published version
Abstract
The effect of scintillation, arising from propagation through atmospheric turbulence, on the sift and error probabilities of a quantum key distribution (QKD) system that uses the weak-laser-pulse version of the Bennett-Brassard 1984 (BB84) protocol is evaluated. Two earth-space scenarios are examined: satellite-to-ground and ground-to-satellite transmission. Both lie in the far-field power-transfer regime. This work complements previous analysis of turbulence effects in near-field terrestrial BB84 QKD [ J. H. Shapiro Phys. Rev. A 67 022309 (2003)]. More importantly, it shows that scintillation has virtually no impact on the sift and error probabilities in earth-space BB84 QKD, something that has been implicitly assumed in prior analyses for that application. This result contrasts rather sharply with what is known for high-speed laser communications over such paths, in which deep, long-lived scintillation fades present a major challenge to high-reliability operation.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevA.84.032340
