Publication Date

2010

Journal or Book Title

PHYSICAL REVIEW LETTERS

Abstract

Spontaneous symmetry breaking (SSB) for Bose-Einstein condensates cannot treat phase off-diagonal effects, and thus cannot explain Bell inequality violations. We describe another situation that is beyond a SSB treatment: an experiment where particles from two (possibly macroscopic) condensate sources are used for conjugate measurements of the relative phase and populations. Off-diagonal phase effects are characterized by a “quantum angle” and observed via “population oscillations,” signaling quantum interference of macroscopically distinct states.

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prl.aps.org/abstract/PRL/v104/i15/e150401

Volume

104

Pages

-

Issue

15

Included in

Physics Commons

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