Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
Quantum Physics
2009-11-13 v1
Abstract
We analyze the asymptotic security of the family of Gaussian modulated Quantum Key Distribution protocols for Continuous Variables systems. We prove that the Gaussian unitary attack is optimal for all the considered bounds on the key rate when the first and second momenta of the canonical variables involved are known by the honest parties.
Cite
@article{arxiv.quant-ph/0608034,
title = {Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography},
author = {Miguel Navascues and Frederic Grosshans and Antonio Acin},
journal= {arXiv preprint arXiv:quant-ph/0608034},
year = {2009}
}
Comments
See also R. Garcia-Patron and N. Cerf, quant-ph/0608032