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Robust temporal pumping in a magneto-mechanical topological insulator

Author

Listed:
  • Inbar Hotzen Grinberg

    (University of Illinois at Urbana-Champaign)

  • Mao Lin

    (University of Illinois at Urbana-Champaign)

  • Cameron Harris

    (University of Illinois at Urbana-Champaign)

  • Wladimir A. Benalcazar

    (University of Illinois at Urbana-Champaign)

  • Christopher W. Peterson

    (University of Illinois at Urbana-Champaign)

  • Taylor L. Hughes

    (University of Illinois at Urbana-Champaign)

  • Gaurav Bahl

    (University of Illinois at Urbana-Champaign)

Abstract

The transport of energy through 1-dimensional (1D) waveguiding channels can be affected by sub-wavelength disorder, resulting in undesirable localization and backscattering phenomena. However, quantized disorder-resilient transport is observable in the edge currents of 2-dimensional (2D) topological band insulators with broken time-reversal symmetry. Topological pumps are able to reduce this higher-dimensional topological insulator phenomena to lower dimensionality by utilizing a pumping parameter (either space or time) as an artificial dimension. Here we demonstrate a temporal topological pump that produces on-demand, robust transport of mechanical energy using a 1D magneto-mechanical metamaterial. We experimentally demonstrate that the system is uniquely resilient to defects occurring in both space and time. Our findings open a path towards exploration of higher-dimensional topological physics with time as a synthetic dimension.

Suggested Citation

  • Inbar Hotzen Grinberg & Mao Lin & Cameron Harris & Wladimir A. Benalcazar & Christopher W. Peterson & Taylor L. Hughes & Gaurav Bahl, 2020. "Robust temporal pumping in a magneto-mechanical topological insulator," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14804-0
    DOI: 10.1038/s41467-020-14804-0
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    Cited by:

    1. Yi-Ke Sun & Zhong-Lei Shan & Zhen-Nan Tian & Qi-Dai Chen & Xu-Lin Zhang, 2024. "Two-dimensional non-Abelian Thouless pump," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Nader Mostaan & Fabian Grusdt & Nathan Goldman, 2022. "Quantized topological pumping of solitons in nonlinear photonics and ultracold atomic mixtures," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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