0302196v1

related topics
{key, protocol, security}
{photon, photons, single}
{bell, inequality, local}
{alice, bob, state}
{cos, sin, state}
{group, space, representation}
{state, phys, rev}
{time, decoherence, evolution}

A Modified Wigner's Inequality for Secure Quantum Key Distribution

S. Castelletto, I. P. Degiovanni, M. L. Rastello

abstract: In this report we discuss the insecurity with present implementations of the Ekert protocol for quantum-key distribution based on the Wigner Inequality. We propose a modified version of this inequality which guarantees safe quantum-key distribution.

oai_identifier:
oai:arXiv.org:quant-ph/0302196
categories:
quant-ph
comments:
5 pages, 2 figures, a revised version will appear on PRA
doi:
10.1103/PhysRevA.67.044303
arxiv_id:
quant-ph/0302196
created:
2003-02-27

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