Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution

Details Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution

2009-09-30

arxiv.org/abs/0909.5519v1

Opt. Lett. 34, 3238 (2009)

Physics

Quantum Physics

7 pages, 3 figures, accepted for publication in Opt. Lett

Scientific paper

We propose a method to prepare different non-Poissonian signal pulses from sources of Poissonian photon number distribution using only linear optical elements and threshold photon detectors. This method allows a simple passive preparation of decoy states for quantum key distribution. We show that the resulting key rates are comparable to the performance of active choices of intensities of Poissonian signals.

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