Parametric tuning of quantum phase transitions in ultracold reactions
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913605128028160 |
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| author | Sadhasivam, Vijay Ganesh Suzuki, Fumika Yan, Bin Sinitsyn, Nikolai A. |
| author_facet | Sadhasivam, Vijay Ganesh Suzuki, Fumika Yan, Bin Sinitsyn, Nikolai A. |
| contents | Advances in atomic physics have led to the possibility of a coherent transformation between ultra-cold atoms and molecules including between completely bosonic condensates. Such transformations are enabled by the magneto-association of atoms at a Feshbach resonance which results in a passage through a quantum critical point. In this study, we show that the presence of generic interaction between the constituent atoms and molecules can fundamentally alter the nature of the critical point, change the yield of the reaction and the order of the consequent phase transition. We find that the correlations introduced by this interaction induce nontrivial many-body physics such as coherent oscillations between atoms and molecules, and a selective formation of squeezed molecular quantum states and quantum cat states. We provide analytical and numerical descriptions of these effects, along with scaling laws for the reaction yield in non-adiabatic regimes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_09291 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Parametric tuning of quantum phase transitions in ultracold reactions Sadhasivam, Vijay Ganesh Suzuki, Fumika Yan, Bin Sinitsyn, Nikolai A. Quantum Gases Other Condensed Matter Quantum Physics Advances in atomic physics have led to the possibility of a coherent transformation between ultra-cold atoms and molecules including between completely bosonic condensates. Such transformations are enabled by the magneto-association of atoms at a Feshbach resonance which results in a passage through a quantum critical point. In this study, we show that the presence of generic interaction between the constituent atoms and molecules can fundamentally alter the nature of the critical point, change the yield of the reaction and the order of the consequent phase transition. We find that the correlations introduced by this interaction induce nontrivial many-body physics such as coherent oscillations between atoms and molecules, and a selective formation of squeezed molecular quantum states and quantum cat states. We provide analytical and numerical descriptions of these effects, along with scaling laws for the reaction yield in non-adiabatic regimes. |
| title | Parametric tuning of quantum phase transitions in ultracold reactions |
| topic | Quantum Gases Other Condensed Matter Quantum Physics |
| url | https://arxiv.org/abs/2403.09291 |