dc.identifier.uri | http://dx.doi.org/10.15488/1303 | |
dc.identifier.uri | http://www.repo.uni-hannover.de/handle/123456789/1328 | |
dc.contributor.author | Trimborn, F. | |
dc.contributor.author | Witthaut, D. | |
dc.contributor.author | Kegel, V. | |
dc.contributor.author | Korsch, H. J. | |
dc.date.accessioned | 2017-04-06T08:24:40Z | |
dc.date.available | 2017-04-06T08:24:40Z | |
dc.date.issued | 2010 | |
dc.identifier.citation | Trimborn, F.; Witthaut, D.; Kegel, V.; Korsch, H. J.: Nonlinear Landau-Zener tunneling in quantum phase space. In: New Journal of Physics 12 (2010), 53010. DOI: https://doi.org/10.1088/1367-2630/12/5/053010 | |
dc.description.abstract | We present a detailed analysis of the Landau-Zener problem for an interacting Bose-Einstein condensate in a time-varying double-well trap, especially focusing on the relation between the full many-particle problem and the mean-field approximation. Due to the nonlinear self-interaction a dynamical instability occurs, which leads to a breakdown of adiabaticity and thus fundamentally alters the dynamics. It is shown that essentially all the features of the Landau-Zener problem including the depletion of the condensate mode can be already understood within a semiclassical phase-space picture. In particular, this treatment resolves the formerly imputed incommutability of the adiabatic and semiclassical limits. The possibility of exploiting Landau-Zener sweeps to generate squeezed states for spectroscopic tasks is analyzed in detail. Moreover, we study the influence of phase noise and propose a Landau-Zener sweep as a sensitive yet readily implementable probe for decoherence, since the noise has significant effect on the transition rate for slow parameter variations. | eng |
dc.description.sponsorship | DFG/WI 3415/1 | |
dc.description.sponsorship | DFG/GRK/792 | |
dc.description.sponsorship | Studienstiftung des deutschen Volkes | |
dc.language.iso | eng | |
dc.publisher | Bristol : IOP Publishing Ltd. | |
dc.relation.ispartofseries | New Journal of Physics 12 (2010) | |
dc.rights | CC BY-NC-SA 3.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-sa/3.0/ | |
dc.subject | bose-einstein condensate | eng |
dc.subject | dynamical instability | eng |
dc.subject | optical lattice | eng |
dc.subject | system | eng |
dc.subject | entanglement | eng |
dc.subject.ddc | 530 | Physik | ger |
dc.title | Nonlinear Landau-Zener tunneling in quantum phase space | |
dc.type | Article | |
dc.type | Text | |
dc.relation.essn | 1367-2630 | |
dc.relation.doi | https://doi.org/10.1088/1367-2630/12/5/053010 | |
dc.bibliographicCitation.volume | 12 | |
dc.bibliographicCitation.firstPage | 53010 | |
dc.description.version | publishedVersion | |
tib.accessRights | frei zug�nglich |
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