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Experimental Eavesdropping Attack against Ekert's Protocol based on Wigner's Inequality

F. A. Bovino·A. M. Colla·G. Castagnoli·S. Castelletto·I. P. Degiovanni·M. L. Rastello
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Abstract

We experimentally implemented an eavesdropping attack against the Ekert protocol for quantum key distribution based on the Wigner inequality. We demonstrate a serious lack of security of this protocol when the eavesdropper gains total control of the source. In addition we tested a modified Wigner inequality which should guarantee a secure quantum key distribution.

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F. A. Bovino, A. M. Colla, G. Castagnoli, S. Castelletto, I. P. Degiovanni, M. L. Rastello. 2003-08-06. Experimental Eavesdropping Attack against Ekert's Protocol based on Wigner's Inequality. https://doi.org/10.1103/physreva.68.034309

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