de Finetti Representation Theorem for Infinite-Dimensional Quantum Systems and Applications to Quantum Cryptography

R. Renner and J. I. Cirac
Phys. Rev. Lett. 102, 110504 – Published 19 March 2009

Abstract

We show that the quantum de Finetti theorem holds for states on infinite-dimensional systems, provided they satisfy certain experimentally verifiable conditions. This result can be applied to prove the security of quantum key distribution based on weak coherent states or other continuous variable states against general attacks.

  • Received 20 October 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.110504

©2009 American Physical Society

Authors & Affiliations

R. Renner

  • Institute for Theoretical Physics, ETH Zurich, CH-8093 Zurich, Switzerland

J. I. Cirac

  • Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany

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Issue

Vol. 102, Iss. 11 — 20 March 2009

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