Exceptional point and hysteresis trajectories in cold Rydberg atomic gases
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
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| _version_ | 1866916348384247808 |
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| author | Zhang, Jun Li, En-Ze Wang, Ya-Jun Liu, Bang Zhang, Li-Hua Zhang, Zheng-Yuan Shao, Shi-Yao Li, Qing Chen, Han-Chao Ma, Yu Han, Tian-Yu Wang, Qi-Feng Nan, Jia-Dou Ying, Yi-Ming Zhu, Dong-Yang Shi, Bao-Sen Ding, Dong-Sheng |
| author_facet | Zhang, Jun Li, En-Ze Wang, Ya-Jun Liu, Bang Zhang, Li-Hua Zhang, Zheng-Yuan Shao, Shi-Yao Li, Qing Chen, Han-Chao Ma, Yu Han, Tian-Yu Wang, Qi-Feng Nan, Jia-Dou Ying, Yi-Ming Zhu, Dong-Yang Shi, Bao-Sen Ding, Dong-Sheng |
| contents | The interplay between strong long-range interactions and the coherent driving contribute to the formation of complex patterns, symmetry, and novel phases of matter in many-body systems. However, long-range interactions may induce an additional dissipation channel, resulting in non-Hermitian many-body dynamics and the emergence of exceptional points in spectrum. Here, we report experimental observation of interaction-induced exceptional points in cold Rydberg atomic gases, revealing the breaking of charge-conjugation parity symmetry. By measuring the transmission spectrum under increasing and decreasing probe intensity, the interaction-induced hysteresis trajectories are observed, which give rise to non-Hermitian dynamics. We record the area enclosed by hysteresis loops and investigate the dynamics of hysteresis loops. The reported exceptional points and hysteresis trajectories in cold Rydberg atomic gases provide valuable insights into the underlying non-Hermitian physics in many-body systems, allowing us to study the interplay between long-range interactions and non-Hermiticity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_03109 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exceptional point and hysteresis trajectories in cold Rydberg atomic gases Zhang, Jun Li, En-Ze Wang, Ya-Jun Liu, Bang Zhang, Li-Hua Zhang, Zheng-Yuan Shao, Shi-Yao Li, Qing Chen, Han-Chao Ma, Yu Han, Tian-Yu Wang, Qi-Feng Nan, Jia-Dou Ying, Yi-Ming Zhu, Dong-Yang Shi, Bao-Sen Ding, Dong-Sheng Quantum Gases Quantum Physics The interplay between strong long-range interactions and the coherent driving contribute to the formation of complex patterns, symmetry, and novel phases of matter in many-body systems. However, long-range interactions may induce an additional dissipation channel, resulting in non-Hermitian many-body dynamics and the emergence of exceptional points in spectrum. Here, we report experimental observation of interaction-induced exceptional points in cold Rydberg atomic gases, revealing the breaking of charge-conjugation parity symmetry. By measuring the transmission spectrum under increasing and decreasing probe intensity, the interaction-induced hysteresis trajectories are observed, which give rise to non-Hermitian dynamics. We record the area enclosed by hysteresis loops and investigate the dynamics of hysteresis loops. The reported exceptional points and hysteresis trajectories in cold Rydberg atomic gases provide valuable insights into the underlying non-Hermitian physics in many-body systems, allowing us to study the interplay between long-range interactions and non-Hermiticity. |
| title | Exceptional point and hysteresis trajectories in cold Rydberg atomic gases |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2408.03109 |