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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2305.17853 |
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| _version_ | 1866908178177851392 |
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| author | Ye, Rui He, Yanyan Li, Guangzhen Wang, Luojia Wu, Xiaoxiong Qiao, Xin Zheng, Yuanlin Jin, Liang Wang, Da-Wei Yuan, Luqi Chen, Xianfeng |
| author_facet | Ye, Rui He, Yanyan Li, Guangzhen Wang, Luojia Wu, Xiaoxiong Qiao, Xin Zheng, Yuanlin Jin, Liang Wang, Da-Wei Yuan, Luqi Chen, Xianfeng |
| contents | Non-Hermitian topological photonics is of great interest in bridging topological matter with gain/dissipation engineering in optics. A key problem in this direction is the interplay between the effective gauge potential and the non-Hermiticity. Here we tackle this problem in a synthetic non-Hermitian Hall ladder and experimentally observe antichiral edge currents (ACECs) of photons, by tuning the locally uniform effective magnetic flux and the on-site gain/loss. Such ACECs provide a topological method to probe the signatures of the non-Hermitian skin effect (NHSE) from steady-state bulk dynamics. The universality of this method is verified by its generalization to three dimensions. This study paves a way to investigate exotic non-Hermitian topological physics and has potential applications in topological photonics engineering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_17853 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Observation of non-Hermitian antichiral edge currents Ye, Rui He, Yanyan Li, Guangzhen Wang, Luojia Wu, Xiaoxiong Qiao, Xin Zheng, Yuanlin Jin, Liang Wang, Da-Wei Yuan, Luqi Chen, Xianfeng Optics Non-Hermitian topological photonics is of great interest in bridging topological matter with gain/dissipation engineering in optics. A key problem in this direction is the interplay between the effective gauge potential and the non-Hermiticity. Here we tackle this problem in a synthetic non-Hermitian Hall ladder and experimentally observe antichiral edge currents (ACECs) of photons, by tuning the locally uniform effective magnetic flux and the on-site gain/loss. Such ACECs provide a topological method to probe the signatures of the non-Hermitian skin effect (NHSE) from steady-state bulk dynamics. The universality of this method is verified by its generalization to three dimensions. This study paves a way to investigate exotic non-Hermitian topological physics and has potential applications in topological photonics engineering. |
| title | Observation of non-Hermitian antichiral edge currents |
| topic | Optics |
| url | https://arxiv.org/abs/2305.17853 |