A simple proof that Gaussian attacks are optimal among collective attacks against continuous-variable quantum key distribution with a Gaussian modulation
Quantum Physics
2010-06-29 v2
Abstract
In this paper, we give a simple proof of the fact that the optimal collective attacks against continous-variable quantum key distribution with a Gaussian modulation are Gaussian attacks. Our proof makes use of symmetry properties of the quantum key distribution protocol in phase-space.
Cite
@article{arxiv.0912.4132,
title = {A simple proof that Gaussian attacks are optimal among collective attacks against continuous-variable quantum key distribution with a Gaussian modulation},
author = {Anthony Leverrier and Philippe Grangier},
journal= {arXiv preprint arXiv:0912.4132},
year = {2010}
}
Comments
6 pages, appendix added