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

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

2003-08-05

arxiv.org/abs/quant-ph/0308030v2

Physics

Quantum Physics

RevTex style, 5 pages, 6 figures, to appear on PRA with minor revision

Scientific paper

10.1103/PhysRevA.68.034309

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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