A Quantum Top Inside a Bose Josephson Junction

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dc.creatorBausmerth, Ingrid
dc.creatorFischer, Uwe R.
dc.creatorPosazhennikova, Anna
dc.date2006-08-16
dc.date2006-11-15
dc.date.accessioned2026-07-07T08:00:45Z
dc.date.available2026-07-07T08:00:45Z
dc.descriptionWe consider an atomic quantum dot confined between two weakly-coupled Bose-Einstein condensates, where the dot serves as an additional tunneling channel. It is shown that the thus-embedded atomic quantum dot is a pseudospin subject to an external torque, and therefore equivalent to a quantum top. We demonstrate by numerical analysis of the time-dependent coupled evolution equations that this microscopic quantum top is very sensitive to any deviation from linear oscillatory behavior of the condensates. For sufficiently strong dot-condensate coupling, the atomic quantum dot can induce or modify the tunneling between the macroscopic condensates in the two wells.
dc.description4 pages of RevTex4, 4 figures; rewritten discussion and displayed new results
dc.identifierhttps://arxiv.org/abs/cond-mat/0608355
dc.identifierhttp://arxiv.org/abs/cond-mat/0608355
dc.identifierPhys. Rev. A 75, 053605 (2007)
dc.identifierdoi:10.1103/PhysRevA.75.053605
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128748
dc.subjectOther Condensed Matter
dc.titleA Quantum Top Inside a Bose Josephson Junction
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