Nonlocal effects in Fock space

Abstract

If a physical system contains a single particle, and if two distant detectors test the presence of linear superpositions of one-particle and vacuum states, a violation of classical locality can occur. It is due to the creation of a two-particle component by the detecting process itself.

final version in PRL 74 (1995) 4571; 76 (1996) 2205 (erratum)

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