Observation of two-dimensional time-reversal broken non-Abelian topological states
Abstract Going beyond the conventional theory, non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. However, to date, experimental studies on non-Abelian topological states beyond one dimension are still restricted...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54403-x |
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| author | Yuze Hu Mingyu Tong Tian Jiang Jian-Hua Jiang Hongsheng Chen Yihao Yang |
| author_facet | Yuze Hu Mingyu Tong Tian Jiang Jian-Hua Jiang Hongsheng Chen Yihao Yang |
| author_sort | Yuze Hu |
| collection | DOAJ |
| description | Abstract Going beyond the conventional theory, non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. However, to date, experimental studies on non-Abelian topological states beyond one dimension are still restricted to systems with time-reversal ( $${{\mathcal{T}}}$$ T ) symmetry. Here, exploiting a designer gyromagnetic photonic crystal, we find rich $${{\mathcal{T}}}$$ T -broken non-Abelian topological phases and their transitions with an unexpected connection to multigap antichiral edge states. By in-situ tuning the magnetic field in the gyromagnetic photonic crystal, we can create, braid, merge, and split the non-Abelian topological nodes in a unique way. Alongside this process, the multigap antichiral edge states can be tuned versatilely, giving rise to topological edge waveguiding with frequency-dependent directionality. These findings open a new avenue for non-Abelian topological physics and topological photonics. |
| format | Article |
| id | doaj-art-c0dfb95a41794460a8fb7f950865dbd7 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c0dfb95a41794460a8fb7f950865dbd72025-01-19T12:29:38ZengNature PortfolioNature Communications2041-17232024-11-0115111010.1038/s41467-024-54403-xObservation of two-dimensional time-reversal broken non-Abelian topological statesYuze Hu0Mingyu Tong1Tian Jiang2Jian-Hua Jiang3Hongsheng Chen4Yihao Yang5State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang UniversityState Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang UniversityInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologySchool of Biomedical Engineering, Division of Life Sciences and Medicine, University of Science and Technology of ChinaState Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang UniversityState Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang UniversityAbstract Going beyond the conventional theory, non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. However, to date, experimental studies on non-Abelian topological states beyond one dimension are still restricted to systems with time-reversal ( $${{\mathcal{T}}}$$ T ) symmetry. Here, exploiting a designer gyromagnetic photonic crystal, we find rich $${{\mathcal{T}}}$$ T -broken non-Abelian topological phases and their transitions with an unexpected connection to multigap antichiral edge states. By in-situ tuning the magnetic field in the gyromagnetic photonic crystal, we can create, braid, merge, and split the non-Abelian topological nodes in a unique way. Alongside this process, the multigap antichiral edge states can be tuned versatilely, giving rise to topological edge waveguiding with frequency-dependent directionality. These findings open a new avenue for non-Abelian topological physics and topological photonics.https://doi.org/10.1038/s41467-024-54403-x |
| spellingShingle | Yuze Hu Mingyu Tong Tian Jiang Jian-Hua Jiang Hongsheng Chen Yihao Yang Observation of two-dimensional time-reversal broken non-Abelian topological states Nature Communications |
| title | Observation of two-dimensional time-reversal broken non-Abelian topological states |
| title_full | Observation of two-dimensional time-reversal broken non-Abelian topological states |
| title_fullStr | Observation of two-dimensional time-reversal broken non-Abelian topological states |
| title_full_unstemmed | Observation of two-dimensional time-reversal broken non-Abelian topological states |
| title_short | Observation of two-dimensional time-reversal broken non-Abelian topological states |
| title_sort | observation of two dimensional time reversal broken non abelian topological states |
| url | https://doi.org/10.1038/s41467-024-54403-x |
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