Practical quantum cryptography based on two-photon interferometry.

We propose an experimental realization of cryptographic-key-sharing scheme exploiting quantum correlations between pair photons. Our experimental setup consists of an external source of correlated photon pairs which propagate to two widely separated unbalanced Mach-Zehnder interferometers. The proba...

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Bibliographic Details
Main Authors: Ekert, A, Rarity, J, Tapster, P, Massimo Palma G
Format: Journal article
Language:English
Published: 1992
Description
Summary:We propose an experimental realization of cryptographic-key-sharing scheme exploiting quantum correlations between pair photons. Our experimental setup consists of an external source of correlated photon pairs which propagate to two widely separated unbalanced Mach-Zehnder interferometers. The probability of detection of photon pairs in any two outputs of the interferometers can be fully modulated by phase plates in either interferometer. © 1992 The American Physical Society.