期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms13918
关键词
-
资金
- Heriot-Watt University
- EPSRC CM-CDT
- EPSRC [EP/M024636/1]
- FRS-FNRS Belgium
- BSPO [P7/18 DYGEST]
- UK Science and Technology Facilities Council (STFC) [ST/H005595/1]
- Engineering and Physical Sciences Research Council [1405729, EP/M024636/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/N000625/1] Funding Source: researchfish
- EPSRC [EP/M024636/1] Funding Source: UKRI
- STFC [ST/N000625/1] Funding Source: UKRI
Topological quantum matter can be realized by subjecting engineered systems to time-periodic modulations. In analogy with static systems, periodically driven quantum matter can be topologically classified by topological invariants, whose non-zero value guarantees the presence of robust edge modes. In the high-frequency limit of the drive, topology is described by standard topological invariants, such as Chern numbers. Away from this limit, these topological numbers become irrelevant, and novel topological invariants must be introduced to capture topological edge transport. The corresponding edge modes were coined anomalous topological edge modes, to highlight their intriguing origin. Here we demonstrate the experimental observation of these topological edge modes in a 2D photonic lattice, where these propagating edge states are shown to coexist with a quasi-localized bulk. Our work opens an exciting route for the exploration of topological physics in time-modulated systems operating away from the high-frequency regime.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据