A simple proof that Gaussian attacks are optimal among collective attacks against continuous-variable quantum key distribution with a Gaussian modulation
arXiv:0912.4132 · doi:10.1103/PhysRevA.81.062314
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.
6 pages, appendix added
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- Novel Reconciliation Protocol Based on Spinal Code for Continuous-variable Quantum Key Distribution