Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multi-level atoms in a cavity
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929345514176512 |
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| author | Hernandez, Enrique Suarez, Elmer Lesanovsky, Igor Olmos, Beatriz Courteille, Philippe W. Slama, Sebastian |
| author_facet | Hernandez, Enrique Suarez, Elmer Lesanovsky, Igor Olmos, Beatriz Courteille, Philippe W. Slama, Sebastian |
| contents | Dissipative light-matter systems can display emergent collective behavior. Here, we report a $\mathbb{Z}_2$-symmetry-breaking phase transition in a system of multi-level $^{87}$Rb atoms strongly coupled to a weakly driven two-mode optical cavity. In the symmetry-broken phase, non-ergodic dynamics manifests in the emergence of multiple stationary states with disjoint basins of attraction. This feature enables the amplification of a small atomic population imbalance into a characteristic macroscopic cavity transmission signal. Our experiment does not only showcase strongly dissipative atom-cavity systems as platforms for probing non-trivial collective many-body phenomena, but also highlights their potential for hosting technological applications in the context of sensing, density classification, and pattern retrieval dynamics within associative memories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_09885 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multi-level atoms in a cavity Hernandez, Enrique Suarez, Elmer Lesanovsky, Igor Olmos, Beatriz Courteille, Philippe W. Slama, Sebastian Quantum Physics Atomic Physics Dissipative light-matter systems can display emergent collective behavior. Here, we report a $\mathbb{Z}_2$-symmetry-breaking phase transition in a system of multi-level $^{87}$Rb atoms strongly coupled to a weakly driven two-mode optical cavity. In the symmetry-broken phase, non-ergodic dynamics manifests in the emergence of multiple stationary states with disjoint basins of attraction. This feature enables the amplification of a small atomic population imbalance into a characteristic macroscopic cavity transmission signal. Our experiment does not only showcase strongly dissipative atom-cavity systems as platforms for probing non-trivial collective many-body phenomena, but also highlights their potential for hosting technological applications in the context of sensing, density classification, and pattern retrieval dynamics within associative memories. |
| title | Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multi-level atoms in a cavity |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2405.09885 |