Secure communication using coherent states
Quantum Physics
2007-05-23 v2
Abstract
We demonstrate that secure communication using coherent states is possible. The optimal eavesdropping strategy for an M-ry ciphering scheme shows that the minimum probability of error in a measurement for bit determination can be made arbitrarily close to the pure guessing value P_e=1/2. This ciphering scheme can be optically amplified without degrading the security level. New avenues are open to secure communications at high speeds in fiber-optic or free-space channels.
Cite
@article{arxiv.quant-ph/0210089,
title = {Secure communication using coherent states},
author = {Geraldo A. Barbosa and Eric Corndorf and Prem Kumar and Horace P. Yuen and G. Mauro D'Ariano and Matteo G. A. Paris and Paolo Perinotti},
journal= {arXiv preprint arXiv:quant-ph/0210089},
year = {2007}
}
Comments
2 1/2 pages, 1 figure, Proceedings of the Sixth International Conference on Quantum Communication, Measurement and Computing Proceedings (QCMC'02), July 2002