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Observation of higher-order time-dislocation topological modes

Author

Listed:
  • Jia-Hui Zhang

    (Shanxi University)

  • Feng Mei

    (Shanxi University
    Shanxi University)

  • Yi Li

    (Shanxi University)

  • Ching Hua Lee

    (National University of Singapore)

  • Jie Ma

    (Shanxi University
    Shanxi University)

  • Liantuan Xiao

    (Shanxi University
    Shanxi University)

  • Suotang Jia

    (Shanxi University
    Shanxi University)

Abstract

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.

Suggested Citation

  • Jia-Hui Zhang & Feng Mei & Yi Li & Ching Hua Lee & Jie Ma & Liantuan Xiao & Suotang Jia, 2025. "Observation of higher-order time-dislocation topological modes," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56717-w
    DOI: 10.1038/s41467-025-56717-w
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    References listed on IDEAS

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