Nonlocality of a single particle

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.

4 pages, 3 figures

References in corpus (4)

• Violation of Bell inequalities by photons more than 10 km apart
• A Beam Splitter for Guided Atoms on an Atom Chip
• Coherent Evolution of Bouncing Bose-Einstein Condensates
• Single-particle nonlocality and entanglement with the vacuum

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