Expansion dynamics of a cylindrical-shell-shaped strongly dipolar condensate
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911880837070848 |
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| author | Young-S., Luis E. Adhikari, S. K. |
| author_facet | Young-S., Luis E. Adhikari, S. K. |
| contents | A Bose-Einstein condensate (BEC) formed on a curved surface with a distinct topology has been a hot topic of intense research, in search of new phenomena in quantum physics as well as for its possible application in quantum computing. In addition to the study of a spherical-shell-shaped BEC, we studied the formation of a cylindrical-shell-shaped harmonically-trapped dipolar BEC of $^{164}$Dy atoms theoretically using an improved mean-field model including a Lee-Huang-Yang-type interaction, meant to stop a collapse at high atom density. To test the robustness of the cylindrical-shell-shaped BEC, here we study its expansion in the same model. We find that as the harmonic trap in the $x$ and $y$ directions are removed, maintaining the axial trap, the cylindrical-shell-shaped BEC expands in the $x$-$y$ plane without deformation, maintaining its shell-shaped structure. After an adequate radial expansion, the axial trap can be relaxed for a desired axial expansion of the cylindrical-shell-shaped BEC allowing its observation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13365 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Expansion dynamics of a cylindrical-shell-shaped strongly dipolar condensate Young-S., Luis E. Adhikari, S. K. Quantum Gases A Bose-Einstein condensate (BEC) formed on a curved surface with a distinct topology has been a hot topic of intense research, in search of new phenomena in quantum physics as well as for its possible application in quantum computing. In addition to the study of a spherical-shell-shaped BEC, we studied the formation of a cylindrical-shell-shaped harmonically-trapped dipolar BEC of $^{164}$Dy atoms theoretically using an improved mean-field model including a Lee-Huang-Yang-type interaction, meant to stop a collapse at high atom density. To test the robustness of the cylindrical-shell-shaped BEC, here we study its expansion in the same model. We find that as the harmonic trap in the $x$ and $y$ directions are removed, maintaining the axial trap, the cylindrical-shell-shaped BEC expands in the $x$-$y$ plane without deformation, maintaining its shell-shaped structure. After an adequate radial expansion, the axial trap can be relaxed for a desired axial expansion of the cylindrical-shell-shaped BEC allowing its observation. |
| title | Expansion dynamics of a cylindrical-shell-shaped strongly dipolar condensate |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2404.13365 |