Quantum Correlations and Secret Bits

Antonio Acín and Nicolas Gisin
Phys. Rev. Lett. 94, 020501 – Published 18 January 2005

Abstract

It is shown that (i) all entangled states can be mapped by single-copy measurements into probability distributions containing secret correlations, and (ii) if a probability distribution obtained from a quantum state contains secret correlations, then this state has to be entangled. These results prove the existence of a two-way connection between secret and quantum correlations in the process of preparation. They also imply that either it is possible to map any bound entangled state into a distillable probability distribution or bipartite bound information exists.

  • Received 21 October 2003

DOI:https://doi.org/10.1103/PhysRevLett.94.020501

©2005 American Physical Society

Authors & Affiliations

Antonio Acín1 and Nicolas Gisin2

  • 1ICFO-Institut de Ciències Fotòniques, Jordi Girona 29, Edifici Nexus II, E-08034 Barcelona, Spain
  • 2GAP-Optique, University of Geneva, 20, Rue de l'École de Médecine, CH-1211 Geneva 4, Switzerland

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Issue

Vol. 94, Iss. 2 — 21 January 2005

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