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arXiv · 1603.07605

Experimental realization of equiangular three-state quantum key distribution

Matteo Schiavon·Giuseppe Vallone·Paolo Villoresi
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Abstract

Quantum key distribution using three states in equiangular configuration combines a security threshold comparable with the one of the Bennett-Brassard 1984 protocol and a quantum bit error rate (QBER) estimation that does not need to reveal part of the key. We implement an entanglement-based version of the Renes 2004 protocol, using only passive optic elements in a linear scheme for the measurement POVM, generating an asymptotic secure key rate of more than 10 kbit/s, with a mean QBER of 1.6%. We then demonstrate its security in the case of finite key and evaluate the key rate for both collective and general attacks.

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Matteo Schiavon, Giuseppe Vallone, Paolo Villoresi. 2016-03-24. Experimental realization of equiangular three-state quantum key distribution. https://doi.org/10.1038/srep30089

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