Nonlocality of a Single Particle

Jacob Dunningham and Vlatko Vedral
Phys. Rev. Lett. 99, 180404 – Published 2 November 2007

Abstract

There has been a great deal of debate surrounding the issue of whether it is possible for a single photon to exhibit nonlocality. A number of schemes have been proposed that claim to demonstrate this effect, but each has been met with significant opposition. The objections hinge largely on the fact that these schemes use unobservable initial states and so, it is claimed, they do not represent experiments that could actually be performed. Here we show how it is possible to overcome these objections by presenting an experimentally feasible scheme that uses realistic initial states. Furthermore, all the techniques required for photons are equally applicable to atoms. It should, therefore, also be possible to use this scheme to verify the nonlocality of a single massive particle.

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  • Received 2 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.180404

©2007 American Physical Society

Authors & Affiliations

Jacob Dunningham1 and Vlatko Vedral1,2

  • 1School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
  • 2Department of Physics, National University of Singapore, 117542 Singapore, Singapore

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Issue

Vol. 99, Iss. 18 — 2 November 2007

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