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Security Enhanced Quantum Cryptography by Controlled Spontaneous Randomness

Hideaki MATSUEDA

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Summary :

A novel method to enhance the practical security of interferometric quantum cryptography is proposed, giving the protocol and detailed constructions including a controlled spontaneous photon emitter, a superradiance amplifier, beam splitters, phase shifters, and a pair of Mach-Zehnder interferometers. The intrinsic uncertainty due to the random phase selection out of three, leads to the detection of eavesdropping. The physical uncertainty of the controlled spontaneous emission of coherent photons also adds temporal equivocation to confuse eavesdroppers.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E82-A No.4 pp.658-664
Publication Date
1999/04/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Information Theory and Coding Theory

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