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

Abstract

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.

4 pages, 1 figure + 1 Table, REVteX. More descriptive title

References in corpus (3)

• Unconditional optimality of Gaussian attacks against continuous-variable QKD
• Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
• One-mode Bosonic Gaussian channels: a full weak-degradability classification

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