Coherent State Distinguishability in Continuous Variable Quantum Cryptography
Quantum Physics
2007-05-23 v1
Abstract
We use the probability of error as a measure of distinguishability between two pure and two mixed symmetric coherent states in the context of continuous variable quantum cryptography. We show that the two mixed symmetric coherent states (in which the various components have the same real part) never give an eavesdropper more information than two pure coherent states.
Cite
@article{arxiv.quant-ph/0703128,
title = {Coherent State Distinguishability in Continuous Variable Quantum Cryptography},
author = {Christian Weedbrook and Mile Gu and Andrew M. Lance and Thomas Symul and Ping Koy Lam and Timothy C. Ralph},
journal= {arXiv preprint arXiv:quant-ph/0703128},
year = {2007}
}
Comments
QCMC 2006 Proceedings Article