Continuous-variable quantum key distribution with Gaussian source noise
arXiv:1101.0871 · doi:10.1103/PhysRevA.83.052304
Abstract
Source noise affects the security of continuous-variable quantum key distribution (CV QKD), and is diffcult to analyze. We propose a model to characterize Gaussian source noise through introducing a neutral party (Fred) who induces the noise with a general unitary transformation. Without knowing Fred's exact state, we derive the security bounds for both reverse and direct reconciliations and show that the bound for reverse reconciliation is tight.
7 pages, 3 figures
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