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Floquet topological insulators for sound

Author

Listed:
  • Romain Fleury

    (The University of Texas at Austin
    ESPCI Paris Tech and Langevin Institute
    Institute of Electrical Engineering, EPFL, Route Cantonale)

  • Alexander B Khanikaev

    (Queens College of The City University of New York
    The Graduate Center of The City University of New York)

  • Andrea Alù

    (The University of Texas at Austin)

Abstract

The unique conduction properties of condensed matter systems with topological order have recently inspired a quest for the similar effects in classical wave phenomena. Acoustic topological insulators, in particular, hold the promise to revolutionize our ability to control sound, allowing for large isolation in the bulk and broadband one-way transport along their edges, with topological immunity against structural defects and disorder. So far, these fascinating properties have been obtained relying on moving media, which may introduce noise and absorption losses, hindering the practical potential of topological acoustics. Here we overcome these limitations by modulating in time the acoustic properties of a lattice of resonators, introducing the concept of acoustic Floquet topological insulators. We show that acoustic waves provide a fertile ground to apply the anomalous physics of Floquet topological insulators, and demonstrate their relevance for a wide range of acoustic applications, including broadband acoustic isolation and topologically protected, nonreciprocal acoustic emitters.

Suggested Citation

  • Romain Fleury & Alexander B Khanikaev & Andrea Alù, 2016. "Floquet topological insulators for sound," Nature Communications, Nature, vol. 7(1), pages 1-11, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11744
    DOI: 10.1038/ncomms11744
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    Cited by:

    1. Zhao-Xian Chen & Yu-Gui Peng & Ze-Guo Chen & Yuan Liu & Peng Chen & Xue-Feng Zhu & Yan-Qing Lu, 2024. "Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Ali Momeni & Romain Fleury, 2022. "Electromagnetic wave-based extreme deep learning with nonlinear time-Floquet entanglement," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    3. Emanuele Galiffi & Paloma A. Huidobro & J. B. Pendry, 2022. "An Archimedes' screw for light," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Midya Parto & Christian Leefmans & James Williams & Franco Nori & Alireza Marandi, 2023. "Non-Abelian effects in dissipative photonic topological lattices," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    5. Weixuan Zhang & Fengxiao Di & Xingen Zheng & Houjun Sun & Xiangdong Zhang, 2023. "Hyperbolic band topology with non-trivial second Chern numbers," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    6. Pawel S. Jung & Georgios G. Pyrialakos & Fan O. Wu & Midya Parto & Mercedeh Khajavikhan & Wieslaw Krolikowski & Demetrios N. Christodoulides, 2022. "Thermal control of the topological edge flow in nonlinear photonic lattices," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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