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

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Curty,  Marcos
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Moroder,  Tobias
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Luetkenhaus,  Norbert
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Curty, M., Moroder, T., Ma, X., & Luetkenhaus, N. (2009). Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution. OPTICS LETTERS, 34(20), 3238-3240.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6BA7-A
Abstract
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 with the performance of active choices of intensities of Poissonian signals. (C) 2009 Optical Society of America