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Article Dans Une Revue Physical Review Letters Année : 2010

Beyond spontaneously broken symmetry in Bose-Einstein condensates

Résumé

Spontaneous symmetry breaking (SSB) for Bose-Einstein condensates cannot treat phase off-diagonal effects, and thus not 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 (QIMDS).

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Dates et versions

hal-00443966 , version 1 (05-01-2010)

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W. J. Mullin, F. Laloë. Beyond spontaneously broken symmetry in Bose-Einstein condensates. Physical Review Letters, 2010, 104, pp.150401. ⟨10.1103/PhysRevLett.104.150401⟩. ⟨hal-00443966⟩
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