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Topological optical differentiator

Author

Listed:
  • Tengfeng Zhu

    (Stanford University
    Zhejiang University)

  • Cheng Guo

    (Stanford University)

  • Junyi Huang

    (Zhejiang University)

  • Haiwen Wang

    (Stanford University)

  • Meir Orenstein

    (Technion-Israel Institute of Technology)

  • Zhichao Ruan

    (Zhejiang University)

  • Shanhui Fan

    (Stanford University)

Abstract

Optical computing holds significant promise of information processing with ultrahigh speed and low power consumption. Recent developments in nanophotonic structures have generated renewed interests due to the prospects of performing analog optical computing with compact devices. As one prominent example, spatial differentiation has been demonstrated with nanophotonic structures and directly applied for edge detection in image processing. However, broadband isotropic two-dimensional differentiation, which is required in most imaging processing applications, has not been experimentally demonstrated yet. Here, we establish a connection between two-dimensional optical spatial differentiation and a nontrivial topological charge in the optical transfer function. Based on this connection, we experimentally demonstrate an isotropic two-dimensional differentiation with a broad spectral bandwidth, by using the simplest photonic device, i.e. a single unpatterned interface. Our work indicates that exploiting concepts from topological photonics can lead to new opportunities in optical computing.

Suggested Citation

  • Tengfeng Zhu & Cheng Guo & Junyi Huang & Haiwen Wang & Meir Orenstein & Zhichao Ruan & Shanhui Fan, 2021. "Topological optical differentiator," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-20972-4
    DOI: 10.1038/s41467-021-20972-4
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    Cited by:

    1. Biye Xie & Renwen Huang & Shiyin Jia & Zemeng Lin & Junzheng Hu & Yao Jiang & Shaojie Ma & Peng Zhan & Minghui Lu & Zhenlin Wang & Yanfeng Chen & Shuang Zhang, 2023. "Bulk-local-density-of-state correspondence in topological insulators," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Jérôme Sol & David R. Smith & Philipp Hougne, 2022. "Meta-programmable analog differentiator," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Georgy Ermolaev & Kirill Voronin & Denis G. Baranov & Vasyl Kravets & Gleb Tselikov & Yury Stebunov & Dmitry Yakubovsky & Sergey Novikov & Andrey Vyshnevyy & Arslan Mazitov & Ivan Kruglov & Sergey Zhu, 2022. "Topological phase singularities in atomically thin high-refractive-index materials," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Xinwei Wang & Hao Wang & Jinlu Wang & Xingsi Liu & Huijie Hao & You Sin Tan & Yilei Zhang & He Zhang & Xiangyan Ding & Weisong Zhao & Yuhang Wang & Zhengang Lu & Jian Liu & Joel K. W. Yang & Jiubin Ta, 2023. "Single-shot isotropic differential interference contrast microscopy," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    5. Zi-Lan Deng & Meng-Xia Hu & Shanfeng Qiu & Xianfeng Wu & Adam Overvig & Xiangping Li & Andrea Alù, 2024. "Poincaré sphere trajectory encoding metasurfaces based on generalized Malus’ law," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    6. Michele Cotrufo & Shaban B. Sulejman & Lukas Wesemann & Md. Ataur Rahman & Madhu Bhaskaran & Ann Roberts & Andrea Alù, 2024. "Reconfigurable image processing metasurfaces with phase-change materials," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    7. Ibrahim Tanriover & Sina Abedini Dereshgi & Koray Aydin, 2023. "Metasurface enabled broadband all optical edge detection in visible frequencies," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    8. Yurou Jia & Suying Zhang & Xuan Zhang & Houyou Long & Caibin Xu & Yechao Bai & Ying Cheng & Dajian Wu & Mingxi Deng & Cheng-Wei Qiu & Xiaojun Liu, 2024. "Compact meta-differentiator for achieving isotropically high-contrast ultrasonic imaging," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    9. Michele Cotrufo & Akshaj Arora & Sahitya Singh & Andrea Alù, 2023. "Dispersion engineered metasurfaces for broadband, high-NA, high-efficiency, dual-polarization analog image processing," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    10. Yang Liu & Mingchuan Huang & Qiankun Chen & Douguo Zhang, 2022. "Single planar photonic chip with tailored angular transmission for multiple-order analog spatial differentiator," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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