Optically programmable dual-band perovskite single-pixel detector for color image encryption

Ai Fu; Zhi-Hong Zhang; Jiahao Xiong; Xuan Zhang; Zhiyuan Ye; Jun Xiong; Zhi-Peng Wei; Shuang Zhang; Shuang-Peng Wang; Hong-Chao Liu

doi:10.1038/s41377-025-02126-z

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Optically programmable dual-band perovskite single-pixel detector for color image encryption

Original Articles

- Optically programmable dual-band perovskite single-pixel detector for color image encryption
- Light: Science & Applications Vol. 15, Issue 5, Pages: 1554-1562(2026)
- Affiliations：
  
  1.Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, China
  2.State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, China
  3.Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing, China
  4.New Cornerstone Science Laboratory, Department of Physics, University of Hong Kong, Hong Kong, China
  5.Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China
- Author bio：
  
  Shuang Zhang (shuzhang@hku.hk)
  Shuang-Peng Wang (spwang@um.edu.mo)
  Hong-Chao Liu (hcliu@um.edu.mo)
- Funds：
- DOI：10.1038/s41377-025-02126-z
  CLC：
- Received：20 May 2025，
  
  Revised：2025-10-30，
  
  Accepted：05 November 2025，
  
  Online First：02 March 2026，
  
  Published：31 May 2026
- Accepted：
Scan QR Code
Fu, A. et al. Optically programmable dual-band perovskite single-pixel detector for color image encryption. Light: Science & Applications, 15, 1554-1562 (2026).
DOI：

Fu, A. et al. Optically programmable dual-band perovskite single-pixel detector for color image encryption. Light: Science & Applications, 15, 1554-1562 (2026). DOI： 10.1038/s41377-025-02126-z.

摘要

Abstract

The rapid evolution of eavesdropping technologies has encouraged regular updates and improvement of encryption systems. Developing a detector-dependent optical encryption scheme to tightly connect the decryption and imaging processes offers great potential to prevent eavesdropping. By designing an optically programmable dual-band photodetector

a color image encryption scheme where the photodetector functions as both a detector and a critical decryption key is demonstrated here. The distinctive optically programmable property of the photodetector enables the manipulation of its long-wavelength sensitivity via short-wavelength photonic stimulation

leading to different imaging outputs between single-pixel imaging and point-scan imaging

which therefore demonstrates a capability to decrypt information hidden in color images. This detector-dependent decryption method can effectively prevent potential information leaks when other detectors are used as eavesdropping devices. Our encryption paradigm opens new avenues for color image encryption using photodetectors

enhancing encryption security by introducing a device-based dimension.

关键词

Keywords

references

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