Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder
Abstract Non-Hermitian topological photonics plays a key role in bridging topological matter with gain and loss engineering in optics. Here we report the experimental observation of the break of chiral currents in a Hall ladder from the non-Hermiticity by constructing synthetic frequency dimension i...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2025-01-01
|
| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-024-01700-1 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841544316510535680 |
|---|---|
| author | Rui Ye Yanyan He Guangzhen Li Luojia Wang Xiaoxiong Wu Xin Qiao Yuanlin Zheng Liang Jin Da-Wei Wang Luqi Yuan Xianfeng Chen |
| author_facet | Rui Ye Yanyan He Guangzhen Li Luojia Wang Xiaoxiong Wu Xin Qiao Yuanlin Zheng Liang Jin Da-Wei Wang Luqi Yuan Xianfeng Chen |
| author_sort | Rui Ye |
| collection | DOAJ |
| description | Abstract Non-Hermitian topological photonics plays a key role in bridging topological matter with gain and loss engineering in optics. Here we report the experimental observation of the break of chiral currents in a Hall ladder from the non-Hermiticity by constructing synthetic frequency dimension in two rings, where currents on both legs of the ladder co-propagate in the same direction. The origin of such phenomena is resulted from the interplay between the effective magnetic flux and the on-site gain and loss. Such non-Hermitian co-propagating currents exhibit characteristics of unidirectional frequency conversion in both rings, and moreover, different from the counterpart in Hermitian systems, can provide a method to probe the signatures of the non-Hermitian skin effect from steady-state bulk dynamics. Our model is further extended to models including next-nearest-neighbor couplings, pointing to a way for observing the non-Hermitian signature with higher winding number, and provides a new control knob for light manipulation with the topological dissipation engineering. |
| format | Article |
| id | doaj-art-cd9b780e4152431a93daa795d8997350 |
| institution | Kabale University |
| issn | 2047-7538 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj-art-cd9b780e4152431a93daa795d89973502025-01-12T12:40:20ZengNature Publishing GroupLight: Science & Applications2047-75382025-01-0114111110.1038/s41377-024-01700-1Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladderRui Ye0Yanyan He1Guangzhen Li2Luojia Wang3Xiaoxiong Wu4Xin Qiao5Yuanlin Zheng6Liang Jin7Da-Wei Wang8Luqi Yuan9Xianfeng Chen10State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversitySchool of Physics, Nankai UniversityZhejiang Key Laboratory of Micro-Nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory for Extreme Photonics and Instrumentation, Zhejiang UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong UniversityAbstract Non-Hermitian topological photonics plays a key role in bridging topological matter with gain and loss engineering in optics. Here we report the experimental observation of the break of chiral currents in a Hall ladder from the non-Hermiticity by constructing synthetic frequency dimension in two rings, where currents on both legs of the ladder co-propagate in the same direction. The origin of such phenomena is resulted from the interplay between the effective magnetic flux and the on-site gain and loss. Such non-Hermitian co-propagating currents exhibit characteristics of unidirectional frequency conversion in both rings, and moreover, different from the counterpart in Hermitian systems, can provide a method to probe the signatures of the non-Hermitian skin effect from steady-state bulk dynamics. Our model is further extended to models including next-nearest-neighbor couplings, pointing to a way for observing the non-Hermitian signature with higher winding number, and provides a new control knob for light manipulation with the topological dissipation engineering.https://doi.org/10.1038/s41377-024-01700-1 |
| spellingShingle | Rui Ye Yanyan He Guangzhen Li Luojia Wang Xiaoxiong Wu Xin Qiao Yuanlin Zheng Liang Jin Da-Wei Wang Luqi Yuan Xianfeng Chen Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder Light: Science & Applications |
| title | Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder |
| title_full | Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder |
| title_fullStr | Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder |
| title_full_unstemmed | Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder |
| title_short | Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder |
| title_sort | observing non hermiticity induced chirality breaking in a synthetic hall ladder |
| url | https://doi.org/10.1038/s41377-024-01700-1 |
| work_keys_str_mv | AT ruiye observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT yanyanhe observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT guangzhenli observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT luojiawang observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT xiaoxiongwu observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT xinqiao observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT yuanlinzheng observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT liangjin observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT daweiwang observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT luqiyuan observingnonhermiticityinducedchiralitybreakinginasynthetichallladder AT xianfengchen observingnonhermiticityinducedchiralitybreakinginasynthetichallladder |