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Security of continuous-variable quantum cryptography with Gaussian postselection

Walk, N; Ralph, Timothy Cameron; Symul, Thomas; Lam, Ping Koy


We extend the security analysis of continuous variable quantum-key- distribution protocols using a family of post selection schemes to account for arbitrary eavesdropping attacks. We show that the postselection protocol is equivalent to a virtual entanglement-based protocol including a distillation stage. We introduce a particular 'Gaussian' post selection and demonstrate that the security can be calculated using only experimentally accessible quantities. Finally, we explicitly evaluate the...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.87.020303
Access Rights: Open Access


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