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Practical non-Poissonian light source for passive decoy state quantum key distribution

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Abstract

Passive decoy state quantum key distribution (QKD) has enormous potential in high-speed applications. In this Letter, an intrinsic-stable non-Poissonian light source was implemented with Faraday mirrors and could be a crucial element in realizing passive decoy state QKD. The stable g(2)(0) was obtained through a Hanbury Brown–Twiss experiment, and the results fit well with the theoretical value according to Curty et al.’s theory [Opt. Lett. 34, 3238 (2009)].

© 2010 Optical Society of America

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