Beyond mean-field dynamics in open Bose-Hubbard chains
We investigate the effects of phase noise and particle loss on the dynamics of a Bose-Einstein condensate in an optical lattice. Starting from the many-body master equation, we discuss the applicability of generalized mean-field approximations in the presence of dissipation as well as methods to sim...
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| Auteurs principaux: | , , , , , |
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| Format: | Article (Journal) |
| Langue: | anglais |
| Publié: |
7 June 2011
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| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2011, Volume: 83, Numéro: 6, Pages: 1-7 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.83.063608 |
| Accès en ligne: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.83.063608 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.83.063608 
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| Notes sur l'auteur: | D. Witthaut, F. Trimborn, H. Hennig, G. Kordas, T. Geisel, and S. Wimberger |
| Résumé: | We investigate the effects of phase noise and particle loss on the dynamics of a Bose-Einstein condensate in an optical lattice. Starting from the many-body master equation, we discuss the applicability of generalized mean-field approximations in the presence of dissipation as well as methods to simulate quantum effects beyond mean field by including higher-order correlation functions. It is shown that localized particle dissipation leads to surprising dynamics, as it can suppress decay and restore the coherence of a Bose-Einstein condensate. These effects can be applied to engineer coherent structures such as stable discrete breathers and dark solitons. |
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| Description: | Gesehen am 21.11.2022 |
| Description matérielle: | Online Resource |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.83.063608 |