Optimization of security costs in nested purification protocol

Radim Filip

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Optimization of security costs in nested purification protocol

Radim Filip

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Abstract

We analyse security costs in one segment of nested purification protocol in a large quantum cryptography network, employing the quantum switchers and repeaters. We demonstrate that exponential or even super-exponential grow of entanglement resources occurs in dependence on number of the network switchers. For this reason, an optimization in the nested strategy is suggested, preventing a stronger than the exponential grow of entanglement resources.

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Radim Filip. 2002-02-28. Optimization of security costs in nested purification protocol. https://arxiv.org/abs/quant-ph/0202171

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