Bose-Einstein condensation of non-ground-state caesium atoms
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866909180896477184 |
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| author | Horvath, Milena Dhar, Sudipta Das, Arpita Frye, Matthew D. Guo, Yanliang Hutson, Jeremy M. Landini, Manuele Nägerl, Hanns-Christoph |
| author_facet | Horvath, Milena Dhar, Sudipta Das, Arpita Frye, Matthew D. Guo, Yanliang Hutson, Jeremy M. Landini, Manuele Nägerl, Hanns-Christoph |
| contents | Bose-Einstein condensates of ultracold atoms serve as low-entropy sources for a multitude of quantum-science applications, ranging from quantum simulation and quantum many-body physics to proof-of-principle experiments in quantum metrology and quantum computing. For stability reasons, in the majority of cases the energetically lowest-lying atomic spin state is used. Here we report the Bose-Einstein condensation of caesium atoms in the Zeeman-excited mf = 2 state, realizing a non-ground-state Bose-Einstein condensate with tunable interactions and tunable loss. We identify two regions of magnetic field in which the two-body relaxation rate is low enough that condensation is possible. We characterize the phase transition and quantify the loss processes, finding unusually high three-body losses in one of the two regions. Our results open up new possibilities for the mixing of quantum-degenerate gases, for polaron and impurity physics, and in particular for the study of impurity transport in strongly correlated one-dimensional quantum wires. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_12025 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Bose-Einstein condensation of non-ground-state caesium atoms Horvath, Milena Dhar, Sudipta Das, Arpita Frye, Matthew D. Guo, Yanliang Hutson, Jeremy M. Landini, Manuele Nägerl, Hanns-Christoph Quantum Gases Bose-Einstein condensates of ultracold atoms serve as low-entropy sources for a multitude of quantum-science applications, ranging from quantum simulation and quantum many-body physics to proof-of-principle experiments in quantum metrology and quantum computing. For stability reasons, in the majority of cases the energetically lowest-lying atomic spin state is used. Here we report the Bose-Einstein condensation of caesium atoms in the Zeeman-excited mf = 2 state, realizing a non-ground-state Bose-Einstein condensate with tunable interactions and tunable loss. We identify two regions of magnetic field in which the two-body relaxation rate is low enough that condensation is possible. We characterize the phase transition and quantify the loss processes, finding unusually high three-body losses in one of the two regions. Our results open up new possibilities for the mixing of quantum-degenerate gases, for polaron and impurity physics, and in particular for the study of impurity transport in strongly correlated one-dimensional quantum wires. |
| title | Bose-Einstein condensation of non-ground-state caesium atoms |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2310.12025 |