Observation of higher-order time-dislocation topological modes
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913381463621632 |
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| author | Zhang, Jia-Hui Mei, Feng Li, Yi Lee, Ching Hua Ma, Jie Xiao, Liantuan Jia, Suotang |
| author_facet | Zhang, Jia-Hui Mei, Feng Li, Yi Lee, Ching Hua Ma, Jie Xiao, Liantuan Jia, Suotang |
| contents | Topological dislocation modes resulting from the interplay between spatial dislocations and momentum-space topology have recently attracted significant interest. Here, we theoretically and experimentally demonstrate time-dislocation topological modes which are induced by the interplay between temporal dislocations and Floquet-band topology. By utilizing an extra physical dimension to represent the frequency-space lattice, we implement a two-dimensional Floquet higher-order topological phase and observe time-dislocation induced $π$-mode topological corner modes in a three-dimensional circuit metamaterial. Intriguingly, the realized time-dislocation topological modes exhibit spatial localization at the temporal dislocation, despite homogeneous in-plane lattice couplings across it. Our study opens a new avenue to explore the topological phenomena enabled by the interplay between real-space, time-space and momentum-space topology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_04763 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observation of higher-order time-dislocation topological modes Zhang, Jia-Hui Mei, Feng Li, Yi Lee, Ching Hua Ma, Jie Xiao, Liantuan Jia, Suotang Mesoscale and Nanoscale Physics Optics Topological dislocation modes resulting from the interplay between spatial dislocations and momentum-space topology have recently attracted significant interest. Here, we theoretically and experimentally demonstrate time-dislocation topological modes which are induced by the interplay between temporal dislocations and Floquet-band topology. By utilizing an extra physical dimension to represent the frequency-space lattice, we implement a two-dimensional Floquet higher-order topological phase and observe time-dislocation induced $π$-mode topological corner modes in a three-dimensional circuit metamaterial. Intriguingly, the realized time-dislocation topological modes exhibit spatial localization at the temporal dislocation, despite homogeneous in-plane lattice couplings across it. Our study opens a new avenue to explore the topological phenomena enabled by the interplay between real-space, time-space and momentum-space topology. |
| title | Observation of higher-order time-dislocation topological modes |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2406.04763 |