Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866908453085118464 |
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| author | Baumgärtner, Alexander Hertlein, Simon Schmit, Tom Dreon, Davide Máximo, Carlos Li, Xiangliang Morigi, Giovanna Donner, Tobias |
| author_facet | Baumgärtner, Alexander Hertlein, Simon Schmit, Tom Dreon, Davide Máximo, Carlos Li, Xiangliang Morigi, Giovanna Donner, Tobias |
| contents | Metastability and its relaxation mechanisms challenge our understanding of the stability of quantum many-body systems, revealing a gap between the microscopic dynamics of the individual components and the effective descriptions used for macroscopic observables. We observe excited self-ordered subradiant patterns in a quantum gas coupled to two optical cavities and report lifetimes far beyond the system's typical timescales. These patterns eventually decay through an abrupt transition reordering the atoms into a superradiant phase. Ab-initio theory fully captures this macroscopic behavior, revealing that the subradiant patterns are stabilized by photon-mediated long-range interactions, thereby manifesting universal features of metastability characteristic of long-range interacting systems, as in astrophysics and plasma physics. Our work sheds light on the microscopic mechanisms stabilizing quantum states of matter and highlights the potential of photon-mediated forces for engineering correlations in many-body quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_09227 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions Baumgärtner, Alexander Hertlein, Simon Schmit, Tom Dreon, Davide Máximo, Carlos Li, Xiangliang Morigi, Giovanna Donner, Tobias Quantum Gases Quantum Physics Metastability and its relaxation mechanisms challenge our understanding of the stability of quantum many-body systems, revealing a gap between the microscopic dynamics of the individual components and the effective descriptions used for macroscopic observables. We observe excited self-ordered subradiant patterns in a quantum gas coupled to two optical cavities and report lifetimes far beyond the system's typical timescales. These patterns eventually decay through an abrupt transition reordering the atoms into a superradiant phase. Ab-initio theory fully captures this macroscopic behavior, revealing that the subradiant patterns are stabilized by photon-mediated long-range interactions, thereby manifesting universal features of metastability characteristic of long-range interacting systems, as in astrophysics and plasma physics. Our work sheds light on the microscopic mechanisms stabilizing quantum states of matter and highlights the potential of photon-mediated forces for engineering correlations in many-body quantum systems. |
| title | Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2407.09227 |