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

Stefano Pirandola, Samuel L. Braunstein, and Seth Lloyd
Phys. Rev. Lett. 101, 200504 – Published 14 November 2008

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.

  • Figure
  • Received 5 June 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.200504

©2008 American Physical Society

Authors & Affiliations

Stefano Pirandola1, Samuel L. Braunstein2, and Seth Lloyd1,3

  • 1Research Laboratory of Electronics, MIT, Cambridge, Massachusetts 02139, USA
  • 2Computer Science, University of York, York YO10 5DD, United Kingdom
  • 3Department of Mechanical Engineering, MIT, Cambridge, Massachusetts 02139, USA

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Issue

Vol. 101, Iss. 20 — 14 November 2008

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