Topological optimization of quantum key distribution networks

Details Topological optimization of quantum key distribution networks Topological optimization of quantum key distribution networks

2009-03-04

arxiv.org/abs/0903.0839v1

New J. Phys. 11 075002 (2009)

Physics

Quantum Physics

25 pages, 4 figures

Scientific paper

10.1088/1367-2630/11/7/075002

A Quantum Key Distribution (QKD) network is an infrastructure that allows the realization of the key distribution cryptographic primitive over long distances and at high rates with information-theoretic security. In this work, we consider QKD networks based on trusted repeaters from a topology viewpoint, and present a set of analytical models that can be used to optimize the spatial distribution of QKD devices and nodes in specific network configurations in order to guarantee a certain level of service to network users, at a minimum cost. We give details on new methods and original results regarding such cost minimization arguments applied to QKD networks. These results are likely to become of high importance when the deployment of QKD networks will be addressed by future quantum telecommunication operators. They will therefore have a strong impact on the design and requirements of the next generation of QKD devices.

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