Rotational-state dependence of interactions between polar molecules
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910448493789184 |
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| author | Walraven, Etienne F. Karman, Tijs |
| author_facet | Walraven, Etienne F. Karman, Tijs |
| contents | The long-range electrostatic interactions between molecules depend strongly on their relative orientation, which manifests as a rotational state dependence. Interactions between molecules in the same rotational quantum state are well-known attractive rotational van der Waals interactions. Interactions in rotational states that differ by one quantum show resonant dipole-dipole interactions. We show that where molecules are in rotational states that differ by more than one quantum, they exhibit repulsive van der Waals interactions. At temperatures below a millikelvin, this effect can reduce collisional loss by multiple orders of magnitude. These repulsive interactions lead to applications in quantum simulation and impurity physics with ultracold polar molecules. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05958 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Rotational-state dependence of interactions between polar molecules Walraven, Etienne F. Karman, Tijs Atomic Physics Quantum Gases Chemical Physics Quantum Physics The long-range electrostatic interactions between molecules depend strongly on their relative orientation, which manifests as a rotational state dependence. Interactions between molecules in the same rotational quantum state are well-known attractive rotational van der Waals interactions. Interactions in rotational states that differ by one quantum show resonant dipole-dipole interactions. We show that where molecules are in rotational states that differ by more than one quantum, they exhibit repulsive van der Waals interactions. At temperatures below a millikelvin, this effect can reduce collisional loss by multiple orders of magnitude. These repulsive interactions lead to applications in quantum simulation and impurity physics with ultracold polar molecules. |
| title | Rotational-state dependence of interactions between polar molecules |
| topic | Atomic Physics Quantum Gases Chemical Physics Quantum Physics |
| url | https://arxiv.org/abs/2401.05958 |