Phys. Rev. A 61, 052304 (2000) [10 pages]Security against individual attacks for realistic quantum key distributionReceived 28 October 1999; published 6 April 2000 I prove the security of quantum key distribution against individual attacks for realistic signals sources, including weak coherent pulses and down-conversion sources. The proof applies to the Bennett-Brassard 1984 protocol with the standard detection scheme (no strong reference pulse). I obtain a formula for the secure bit rate per time slot of an experimental setup, which can be used to optimize the performance of existing schemes for the considered scenario. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.052304
DOI:
10.1103/PhysRevA.61.052304
PACS:
03.67.Dd, 03.65.Bz, 42.79.Sz
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