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On-chip nanophotonic topological rainbow

Author

Listed:
  • Cuicui Lu

    (Beijing Institute of Technology
    Shandong Normal University)

  • Yi-Zhi Sun

    (Jinan University)

  • Chenyang Wang

    (Beijing Institute of Technology)

  • Hongyu Zhang

    (Beijing Institute of Technology)

  • Wen Zhao

    (Beijing Institute of Technology)

  • Xiaoyong Hu

    (Peking University)

  • Meng Xiao

    (Wuhan University)

  • Wei Ding

    (Jinan University)

  • Yong-Chun Liu

    (Tsinghua University)

  • C. T. Chan

    (The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon)

Abstract

The era of Big Data requires nanophotonic chips to have large information processing capacity. Multiple frequency on-chip nanophotonic devices are highly desirable for density integration, but such devices are more susceptible to structural imperfection because of their nano-scale. Topological photonics provides a robust platform for next-generation nanophotonic chips. Here we give an experimental report of an on-chip nanophotonic topological rainbow realized by employing a translational deformation freedom as a synthetic dimension. The topological rainbow can separate, slow, and trap topological photonic states of different frequencies into different positions. A homemade scattering scanning near-field optical microscope with high resolution is introduced to directly measure the topological rainbow effect of the silicon-based photonic chip. The topological rainbow based on synthetic dimension have no restrictions for optical lattice types, symmetries, materials, wavelength band, and is easy for on-chip integration. This work builds a bridge between silicon chip technologies and topological photonics.

Suggested Citation

  • Cuicui Lu & Yi-Zhi Sun & Chenyang Wang & Hongyu Zhang & Wen Zhao & Xiaoyong Hu & Meng Xiao & Wei Ding & Yong-Chun Liu & C. T. Chan, 2022. "On-chip nanophotonic topological rainbow," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30276-w
    DOI: 10.1038/s41467-022-30276-w
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    References listed on IDEAS

    as
    1. Zheng Wang & Yidong Chong & J. D. Joannopoulos & Marin Soljačić, 2009. "Observation of unidirectional backscattering-immune topological electromagnetic states," Nature, Nature, vol. 461(7265), pages 772-775, October.
    2. Xin-Tao He & En-Tao Liang & Jia-Jun Yuan & Hao-Yang Qiu & Xiao-Dong Chen & Fu-Li Zhao & Jian-Wen Dong, 2019. "A silicon-on-insulator slab for topological valley transport," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    3. Wen-Jie Chen & Meng Xiao & C. T. Chan, 2016. "Photonic crystals possessing multiple Weyl points and the experimental observation of robust surface states," Nature Communications, Nature, vol. 7(1), pages 1-10, December.
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    Cited by:

    1. Jing Zhao & Xianfeng Wu & Doudou Zhang & Xiaoting Xu & Xiaonong Wang & Xiaopeng Zhao, 2024. "Amber rainbow ribbon effect in broadband optical metamaterials," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Xuewei Zhang & Chaohua Wu & Mou Yan & Ni Liu & Ziyu Wang & Gang Chen, 2024. "Observation of continuum Landau modes in non-Hermitian electric circuits," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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