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.
@article{arxiv.0909.5519,
title = {Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution},
author = {Marcos Curty and Tobias Moroder and Xiongfeng Ma and Norbert Lütkenhaus},
journal= {arXiv preprint arXiv:0909.5519},
year = {2015}
}
Comments
7 pages, 3 figures, accepted for publication in Opt. Lett