Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography

Miguel Navascues, Frederic Grosshans, Antonio Acin

Research output: Contribution to journalArticle (Academic Journal)peer-review

278 Citations (Scopus)


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.
Original languageUndefined/Unknown
JournalPhysical Review Letters
Issue number190502
Publication statusPublished - 3 Aug 2006

Bibliographical note

See also R. Garcia-Patron and N. Cerf, quant-ph/0608032


  • quant-ph

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