Experimental signature of transient symmetry breaking in a cavity superconductor
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911247057813504 |
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| author | Duan, Siyu Wu, Jingbo Jia, Xiaoqing Wang, Huabing Eremin, Ilya M. Uhrig, Götz S. Jin, Biaobing Wang, Zhe |
| author_facet | Duan, Siyu Wu, Jingbo Jia, Xiaoqing Wang, Huabing Eremin, Ilya M. Uhrig, Götz S. Jin, Biaobing Wang, Zhe |
| contents | Transient states of matter far from equilibrium may exhibit physical properties beyond those allowed by the equilibrium-state crystalline symmetries. We explore ultrafast and direct electronic excitations of transient states in a cavity superconductor by using time-resolved terahertz-pump terahertz-probe spectroscopy. Our results show that the strong terahertz field can transiently modify the symmetries of the electronic subsystems via the injection of a transient supercurrent, leading to high-order nonlinear dynamical responses that are not compatible with the equilibrium-state symmetries, which evidences for transient symmetry breaking on the picosecond time scale. Our study also finds that the strong coupling of the superconductor to the designed microcavities enables the sensitive detection of the nonlinear responses associated to the transient symmetry breaking. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_01339 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Experimental signature of transient symmetry breaking in a cavity superconductor Duan, Siyu Wu, Jingbo Jia, Xiaoqing Wang, Huabing Eremin, Ilya M. Uhrig, Götz S. Jin, Biaobing Wang, Zhe Superconductivity Strongly Correlated Electrons Transient states of matter far from equilibrium may exhibit physical properties beyond those allowed by the equilibrium-state crystalline symmetries. We explore ultrafast and direct electronic excitations of transient states in a cavity superconductor by using time-resolved terahertz-pump terahertz-probe spectroscopy. Our results show that the strong terahertz field can transiently modify the symmetries of the electronic subsystems via the injection of a transient supercurrent, leading to high-order nonlinear dynamical responses that are not compatible with the equilibrium-state symmetries, which evidences for transient symmetry breaking on the picosecond time scale. Our study also finds that the strong coupling of the superconductor to the designed microcavities enables the sensitive detection of the nonlinear responses associated to the transient symmetry breaking. |
| title | Experimental signature of transient symmetry breaking in a cavity superconductor |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.01339 |