Berry Curvature and Bulk-Boundary Correspondence from Transport Measurement for Photonic Chern Bands
Berry curvature is a fundamental element to characterize topological quantum physics, while a full measurement of Berry curvature in momentum space was not reported for topological states. Here we achieve two-dimensional Berry curvature reconstruction in a photonic quantum anomalous Hall system via...
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| Veröffentlicht in: | Physical review letters 2023-09, Vol.131 (13), p.133601-133601, Article 133601 |
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| container_title | Physical review letters |
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| creator | Chen, Chao Liu, Run-Ze Wu, Jizhou Su, Zu-En Ding, Xing Qin, Jian Wang, Lin Zhang, Wei-Wei He, Yu Wang, Xi-Lin Lu, Chao-Yang Li, Li Sanders, Barry C. Liu, Xiong-Jun Pan, Jian-Wei |
| description | Berry curvature is a fundamental element to characterize topological quantum physics, while a full measurement of Berry curvature in momentum space was not reported for topological states. Here we achieve two-dimensional Berry curvature reconstruction in a photonic quantum anomalous Hall system via Hall transport measurement of a momentum-resolved wave packet. Integrating measured Berry curvature over the two-dimensional Brillouin zone, we obtain Chern numbers corresponding to -1 and 0. Further, we identify bulk-boundary correspondence by measuring topology-linked chiral edge states at the boundary. The full topological characterization of photonic Chern bands from Berry curvature, Chern number, and edge transport measurements enables our photonic system to serve as a versatile platform for further in-depth study of novel topological physics. |
| doi_str_mv | 10.1103/PhysRevLett.131.133601 |
| format | Article |
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| ispartof | Physical review letters, 2023-09, Vol.131 (13), p.133601-133601, Article 133601 |
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| language | eng |
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| source | APS_美国物理学会期刊; EZB Electronic Journals Library |
| title | Berry Curvature and Bulk-Boundary Correspondence from Transport Measurement for Photonic Chern Bands |
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