Eavesdropper's Optimal Information in Variations of Bennett-Brassard 1984 Quantum Key Distribution in the Coherent Attacks
Quantum Physics
2009-11-06 v5
Abstract
We calculate eavesdropper's optimal information on raw bits in Bennett-Brassard 1984 quantum key distribution (BB84 QKD) and six-state scheme in coherent attacks, using a formula by Lo and Chau [Science 283 (1999) 2050] with single photon assumption. We find that eavesdropper's optimal information in QKD without public announcement of bases [Phys. Lett. A 244 (1998) 489] is the same as that of a corresponding QKD WITH it in the coherent attack. We observe a sum-rule concerning each party's information.
Cite
@article{arxiv.quant-ph/0009006,
title = {Eavesdropper's Optimal Information in Variations of Bennett-Brassard 1984 Quantum Key Distribution in the Coherent Attacks},
author = {W. Y. Hwang and D. Ahn and S. W. Hwang},
journal= {arXiv preprint arXiv:quant-ph/0009006},
year = {2009}
}
Comments
no correction, 7 pages, 1 figure, RevTex