A Fair Sampling Test for Ekert Protocol

Details A Fair Sampling Test for Ekert Protocol A Fair Sampling Test for Ekert Protocol

2010-04-08

arxiv.org/abs/1004.1242v2

Physics

Quantum Physics

4 pages, 3 figures, submitted to Phys. Rev. Lett.

Scientific paper

We propose a local scheme to enhance the security of quantum key distribution in Ekert protocol (E91). Our proposal is a fair sampling test meant to detect an eavesdropping attempt that would use a biased sample to mimic an apparent violation of Bell inequalities. The test is local and non disruptive: it can be unilaterally performed at any time by either Alice or Bob during the production of the key, and together with the Bell inequality test.

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