Meta-optics empowered vector visual cryptography for high security and rapid decryption

Fei Zhang, Yinghui Guo, Mingbo Pu (), Lianwei Chen, Mingfeng Xu, Minghao Liao, Lanting Li, Xiong Li, Xiaoliang Ma and Xiangang Luo ()
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Fei Zhang: Chinese Academy of Sciences
Yinghui Guo: Chinese Academy of Sciences
Mingbo Pu: Chinese Academy of Sciences
Lianwei Chen: Chinese Academy of Sciences
Mingfeng Xu: Chinese Academy of Sciences
Minghao Liao: Chinese Academy of Sciences
Lanting Li: Tianfu Xinglong Lake Laboratory
Xiong Li: Chinese Academy of Sciences
Xiaoliang Ma: Chinese Academy of Sciences
Xiangang Luo: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Optical encryption is a promising approach to protecting secret information owing to the advantages of low-power consumption, parallel, high-speed, and multi-dimensional processing capabilities. Nevertheless, conventional strategies generally suffer from bulky system volume, relatively low security level, redundant measurement, and/or requirement of digital decryption algorithms. Here, we propose a general optical security strategy dubbed meta-optics-empowered vector visual cryptography, which fully exploits the abundant degrees of freedom of light as well as the spatial dislocation as key parameters, significantly upgrading the security level. We also demonstrate a decryption meta-camera that can implement the reversal coding procedure for real-time imaging display of hidden information, avoiding redundant measurement and digital post-processing. Our strategy features the merits of a compact footprint, high security, and rapid decryption, which may open an avenue for optical information security and anti-counterfeiting.

Date: 2023
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DOI: 10.1038/s41467-023-37510-z

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