Phase-diffusion dynamics in weakly coupled bose-einstein condensates

We study the phase sensitivity of collisional phase diffusion between weakly coupled Bose-Einstein condensates, using a semiclassical picture of the two-mode Bose-Hubbard model. When weak coupling is allowed, zero relative phase locking is attained in the Josephson-Fock transition regime, whereas a...

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Bibliographic Details
Published in:Physical review letters 2009-05, Vol.102 (18), p.180403-180403, Article 180403
Main Authors: Boukobza, Erez, Chuchem, Maya, Cohen, Doron, Vardi, Amichay
Format: Article
Language:English
Subjects:
BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFUSION
HUBBARD MODEL
SEMICLASSICAL APPROXIMATION
SENSITIVITY
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Summary:We study the phase sensitivity of collisional phase diffusion between weakly coupled Bose-Einstein condensates, using a semiclassical picture of the two-mode Bose-Hubbard model. When weak coupling is allowed, zero relative phase locking is attained in the Josephson-Fock transition regime, whereas a pi relative phase is only locked in Rabi-Josephson point. Our analytic semiclassical estimates agree well with the numerical results.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.102.180403