Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866913035972509696 |
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| author | Chen, Yun Wang, Yuqi You, Jingjun Liu, Yingqi Yi, Su Deng, Yuangang |
| author_facet | Chen, Yun Wang, Yuqi You, Jingjun Liu, Yingqi Yi, Su Deng, Yuangang |
| contents | Ultracold atoms coupled to optical cavities offer a powerful platform for studying strongly correlated many-body physics. Here, we propose an experimental scheme for creating biatomic molecules via cavity-enhanced photoassociation from an atomic condensate. This setup realizes long-range three-body interactions mediated by tripartite cavity-atom-molecule coupling. Beyond a critical pump strength, a self-organized square lattice phase for molecular condensate emerges, resulting in hybrid atom-molecule superradiance with spontaneous $U(1)$ symmetry breaking. Distinct from previously observed ultracold bosonic (fermionic) atomic superradiance, our findings demonstrate bosonic enhancement characterized by a cubic scaling of steady-state photon number with total atom number. Additionally, strong photon-matter entanglement is shown to effectively characterize superradiant quantum phase transition. Our findings deepen the understanding of quantum superchemistry and exotic many-body nonequilibrium dynamics in cavity-coupled quantum gases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_09497 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions Chen, Yun Wang, Yuqi You, Jingjun Liu, Yingqi Yi, Su Deng, Yuangang Quantum Gases Ultracold atoms coupled to optical cavities offer a powerful platform for studying strongly correlated many-body physics. Here, we propose an experimental scheme for creating biatomic molecules via cavity-enhanced photoassociation from an atomic condensate. This setup realizes long-range three-body interactions mediated by tripartite cavity-atom-molecule coupling. Beyond a critical pump strength, a self-organized square lattice phase for molecular condensate emerges, resulting in hybrid atom-molecule superradiance with spontaneous $U(1)$ symmetry breaking. Distinct from previously observed ultracold bosonic (fermionic) atomic superradiance, our findings demonstrate bosonic enhancement characterized by a cubic scaling of steady-state photon number with total atom number. Additionally, strong photon-matter entanglement is shown to effectively characterize superradiant quantum phase transition. Our findings deepen the understanding of quantum superchemistry and exotic many-body nonequilibrium dynamics in cavity-coupled quantum gases. |
| title | Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2501.09497 |