Superfluid Bloch dynamics in an incommensurate optical lattice
We investigate the interplay of disorder and interactions in the accelerated transport of a Bose–Einstein condensate through an incommensurate optical lattice. We show that interactions can effectively cancel the damping of Bloch oscillations (BOs) due to the disordered potential and we provide a si...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/6/065011 |
| _version_ | 1797751400356118528 |
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| author | J B Reeves B Gadway T Bergeman I Danshita D Schneble |
| author_facet | J B Reeves B Gadway T Bergeman I Danshita D Schneble |
| author_sort | J B Reeves |
| collection | DOAJ |
| description | We investigate the interplay of disorder and interactions in the accelerated transport of a Bose–Einstein condensate through an incommensurate optical lattice. We show that interactions can effectively cancel the damping of Bloch oscillations (BOs) due to the disordered potential and we provide a simple model to qualitatively capture this screening effect. We find that the characteristic interaction energy, above which interactions and disorder cooperate to enhance, rather than reduce, the damping of BOs, coincides with the average disorder depth. This is consistent with results of a mean-field simulation. |
| first_indexed | 2024-03-12T16:47:57Z |
| format | Article |
| id | doaj.art-c6f655540eb34ff5a45761b8b30060e0 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:47:57Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c6f655540eb34ff5a45761b8b30060e02023-08-08T11:29:48ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116606501110.1088/1367-2630/16/6/065011Superfluid Bloch dynamics in an incommensurate optical latticeJ B Reeves0B Gadway1T Bergeman2I Danshita3D Schneble4Department of Physics and Astronomy, Stony Brook University , Stony Brook, New York 11794-3800, USADepartment of Physics and Astronomy, Stony Brook University , Stony Brook, New York 11794-3800, USADepartment of Physics and Astronomy, Stony Brook University , Stony Brook, New York 11794-3800, USAYukawa Institute for Theoretical Physics, Kyoto University , Kyoto University, Kyoto 606-8502, Japan; Computational Condensed Matter Physics , RIKEN, Wako, Saitama 351-0198, JapanDepartment of Physics and Astronomy, Stony Brook University , Stony Brook, New York 11794-3800, USAWe investigate the interplay of disorder and interactions in the accelerated transport of a Bose–Einstein condensate through an incommensurate optical lattice. We show that interactions can effectively cancel the damping of Bloch oscillations (BOs) due to the disordered potential and we provide a simple model to qualitatively capture this screening effect. We find that the characteristic interaction energy, above which interactions and disorder cooperate to enhance, rather than reduce, the damping of BOs, coincides with the average disorder depth. This is consistent with results of a mean-field simulation.https://doi.org/10.1088/1367-2630/16/6/065011Bose–Einstein condensatesdisorderoptical lattices67.85.Hj61.43.-j03.75.Kk |
| spellingShingle | J B Reeves B Gadway T Bergeman I Danshita D Schneble Superfluid Bloch dynamics in an incommensurate optical lattice New Journal of Physics Bose–Einstein condensates disorder optical lattices 67.85.Hj 61.43.-j 03.75.Kk |
| title | Superfluid Bloch dynamics in an incommensurate optical lattice |
| title_full | Superfluid Bloch dynamics in an incommensurate optical lattice |
| title_fullStr | Superfluid Bloch dynamics in an incommensurate optical lattice |
| title_full_unstemmed | Superfluid Bloch dynamics in an incommensurate optical lattice |
| title_short | Superfluid Bloch dynamics in an incommensurate optical lattice |
| title_sort | superfluid bloch dynamics in an incommensurate optical lattice |
| topic | Bose–Einstein condensates disorder optical lattices 67.85.Hj 61.43.-j 03.75.Kk |
| url | https://doi.org/10.1088/1367-2630/16/6/065011 |
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