Optimum design for BB84 quantum key distribution in tree-type passive optical networks

Details Optimum design for BB84 quantum key distribution in tree-type passive optical networks Optimum design for BB84 quantum key distribution in tree-type passive optical networks

2009-11-04

arxiv.org/abs/0911.0745v2

Journal of the Optical Society of America B, 27, A146-A151 (2010)

Physics

Quantum Physics

Published in the Journal of the Optical Society of America B

Scientific paper

We show that there is a tradeoff between the useful key distribution bit rate and the total length of deployed fiber in tree-type passive optical networks for BB84 quantum key distribution applications. A two stage splitting architecture where one splitting is carried in the central office and a second in the outside plant and figure of merit to account for the tradeoff are proposed. We find that there is an optimum solution for the splitting ratios of both stages in the case of Photon Number Splitting (PNS) attacks and Decoy State transmission. We then analyze the effects of the different relevant physical parameters of the PON on the optimum solution.

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