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High-security learning-based optical encryption assisted by disordered metasurface

Author

Listed:
  • Zhipeng Yu

    (Hong Kong Polytechnic University
    Tsinghua University
    Hong Kong Polytechnic University Shenzhen Research Institute)

  • Huanhao Li

    (Hong Kong Polytechnic University
    Hong Kong Polytechnic University Shenzhen Research Institute)

  • Wannian Zhao

    (Tsinghua University)

  • Po-Sheng Huang

    (National Cheng Kung University)

  • Yu-Tsung Lin

    (National Cheng Kung University)

  • Jing Yao

    (Hong Kong Polytechnic University
    Hong Kong Polytechnic University Shenzhen Research Institute)

  • Wenzhao Li

    (Hong Kong Polytechnic University
    Hong Kong Polytechnic University Shenzhen Research Institute)

  • Qi Zhao

    (Hong Kong Polytechnic University
    Hong Kong Polytechnic University Shenzhen Research Institute)

  • Pin Chieh Wu

    (National Cheng Kung University
    National Cheng Kung University
    National Cheng Kung University)

  • Bo Li

    (Tsinghua University
    Suzhou Laboratory)

  • Patrice Genevet

    (Colorado School of Mines)

  • Qinghua Song

    (Tsinghua University
    Suzhou Laboratory)

  • Puxiang Lai

    (Hong Kong Polytechnic University
    Hong Kong Polytechnic University Shenzhen Research Institute
    Hong Kong Polytechnic University)

Abstract

Artificial intelligence has gained significant attention for exploiting optical scattering for optical encryption. Conventional scattering media are inevitably influenced by instability or perturbations, and hence unsuitable for long-term scenarios. Additionally, the plaintext can be easily compromised due to the single channel within the medium and one-to-one mapping between input and output. To mitigate these issues, a stable spin-multiplexing disordered metasurface (DM) with numerous polarized transmission channels serves as the scattering medium, and a double-secure procedure with superposition of plaintext and security key achieves two-to-one mapping between input and output. In attack analysis, when the ciphertext, security key, and incident polarization are all correct, the plaintext can be decrypted. This system demonstrates excellent decryption efficiency over extended periods in noisy environments. The DM, functioning as an ultra-stable and active speckle generator, coupled with the double-secure approach, creates a highly secure speckle-based cryptosystem with immense potentials for practical applications.

Suggested Citation

  • Zhipeng Yu & Huanhao Li & Wannian Zhao & Po-Sheng Huang & Yu-Tsung Lin & Jing Yao & Wenzhao Li & Qi Zhao & Pin Chieh Wu & Bo Li & Patrice Genevet & Qinghua Song & Puxiang Lai, 2024. "High-security learning-based optical encryption assisted by disordered metasurface," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-46946-w
    DOI: 10.1038/s41467-024-46946-w
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    References listed on IDEAS

    as
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    2. Weimin Ye & Franziska Zeuner & Xin Li & Bernhard Reineke & Shan He & Cheng-Wei Qiu & Juan Liu & Yongtian Wang & Shuang Zhang & Thomas Zentgraf, 2016. "Spin and wavelength multiplexed nonlinear metasurface holography," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
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