Unambiuous-state-discrimination attack in cryptography with weak coherent states

Preprint

25 October 1999

preprint
Published by arXiv in arXiv

Abstract

The use of linearly independent signal states in realistic implementations of quantum key distribution (QKD) enables an eavesdropper to perform unambiguous state discrimination. We explore quantitatively the limits for secure QKD imposed by this fact.

Keywords

EXPLORE QUANTITATIVELY
DISCRIMINATION ATTACK
STATE DISCRIMINATION
LINEARLY INDEPENDENT
UNAMBIUOUS STATE
WEAK COHERENT
CRYPTOGRAPHY
QKD

All Related Versions

Version 1, 1999-10-25, ArXiv
Version 2, 2000-04-27, ArXiv
Published version: Physical Review A, 62 (2), 022306.

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