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Two-dimensional Thouless pumping of light in photonic moiré lattices

Author

Listed:
  • Peng Wang

    (Shanghai Jiao Tong University)

  • Qidong Fu

    (Shanghai Jiao Tong University)

  • Ruihan Peng

    (Shanghai Jiao Tong University)

  • Yaroslav V. Kartashov

    (The Barcelona Institute of Science and Technology
    Russian Academy of Sciences)

  • Lluis Torner

    (The Barcelona Institute of Science and Technology
    Universitat Politecnica de Catalunya)

  • Vladimir V. Konotop

    (Universidade de Lisboa
    Universidade de Lisboa)

  • Fangwei Ye

    (Shanghai Jiao Tong University)

Abstract

Continuous and quantized transports are profoundly different. The latter is determined by the global rather than local properties of a system, it exhibits unique topological features, and its ubiquitous nature causes its occurrence in many areas of science. Here we report the first observation of fully-two-dimensional Thouless pumping of light by bulk modes in a purpose-designed tilted moiré lattices imprinted in a photorefractive crystal. Pumping in such unconfined system occurs due to the longitudinal adiabatic and periodic modulation of the refractive index. The topological nature of this phenomenon manifests itself in the magnitude and direction of shift of the beam center-of-mass averaged over one pumping cycle. Our experimental results are supported by systematic numerical simulations in the frames of the continuous Schrödinger equation governing propagation of probe light beam in optically-induced photorefractive moiré lattice. Our system affords a powerful platform for the exploration of topological pumping in tunable commensurate and incommensurate geometries.

Suggested Citation

  • Peng Wang & Qidong Fu & Ruihan Peng & Yaroslav V. Kartashov & Lluis Torner & Vladimir V. Konotop & Fangwei Ye, 2022. "Two-dimensional Thouless pumping of light in photonic moiré lattices," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34394-3
    DOI: 10.1038/s41467-022-34394-3
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    References listed on IDEAS

    as
    1. Jason W. Fleischer & Mordechai Segev & Nikolaos K. Efremidis & Demetrios N. Christodoulides, 2003. "Observation of two-dimensional discrete solitons in optically induced nonlinear photonic lattices," Nature, Nature, vol. 422(6928), pages 147-150, March.
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    3. Peng Wang & Yuanlin Zheng & Xianfeng Chen & Changming Huang & Yaroslav V. Kartashov & Lluis Torner & Vladimir V. Konotop & Fangwei Ye, 2020. "Localization and delocalization of light in photonic moiré lattices," Nature, Nature, vol. 577(7788), pages 42-46, January.
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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. Wang, Qing & Zhou, Liangliang & Zhu, Junying & He, Jun-Rong, 2024. "Multi-vortex beams in nonlinear media with harmonic potential wells," Chaos, Solitons & Fractals, Elsevier, vol. 182(C).
    3. Liu, Xiuye & Zeng, Jianhua, 2023. "Matter-wave gap solitons and vortices of dense Bose–Einstein condensates in Moiré optical lattices," Chaos, Solitons & Fractals, Elsevier, vol. 174(C).
    4. Bai, Xiaoqin & Bai, Juan & Malomed, Boris A. & Yang, Rongcao, 2024. "Spectrum conversion and pattern preservation of Airy beams in fractional systems with a dynamical harmonic-oscillator potential," Chaos, Solitons & Fractals, Elsevier, vol. 182(C).
    5. Chen, Zhiming & Wu, Zexing & Zeng, Jianhua, 2023. "Light gap bullets in defocusing media with optical lattices," Chaos, Solitons & Fractals, Elsevier, vol. 174(C).

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