Experimental Eavesdropping Attack against Ekert's Protocol based on Wigner's Inequality
arXiv:quant-ph/0308030 · doi:10.1103/PhysRevA.68.034309
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.
RevTex style, 5 pages, 6 figures, to appear on PRA with minor revision