Characterization of Collective Gaussian Attacks and Security of Coherent-State Quantum Cryptography

Research output: Contribution to journalLetterpeer-review


We provide a simple description of the most general collective Gaussian attack in continuous-variable quantum cryptography. In the scenario of such general attacks, we analyze the asymptotic secret-key rates which are achievable with coherent states, joint measurements of the quadratures and one-way classical communication.

Original languageEnglish
Article number200504
Number of pages4
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 14 Nov 2008


  • Quantum Key Distribution
  • Gaussian Attacks
  • Coherent States
  • Canonical Channels
  • Secret Keys

Cite this