Quantum cryptography: when your link has to be really secure

Thursday, 22 December 2005, 3:40 AM EST

QC (quantum cryptography) uses a string of individual photons and their quantum states as the bases of a link in which physicist Werner Heisenberg's often-cited, often-misunderstood uncertainty principle defeats any eavesdropper. Although IBM corporate researcher Charles Bennett and the University of Montreal's Giles Brassard first conceived quantum cryptography in the 1980s, it took many years for the needed optical components and associated technologies with the required performance to become available.

At Electronic News.

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