忠诚
密码学
计算机科学
波长
量子密码学
光学
光电子学
计算机安全
电信
物理
量子
量子信息
量子力学
作者
Zhen Lun Gu,Haoyang Liu,Zhengping Zhang,Xiong Wang,Hualiang Zhang,Jianjun Gao,Li‐Ming Si,Jun Ding
标识
DOI:10.1002/lpor.202301014
摘要
Abstract Information security holds paramount importance in the contemporary information society. Here, a novel cryptography method is proposed based on the multi‐wavelength complex‐amplitude metasurface, which can achieve a high security level by generating a frequency‐selective key as an additional layer of protection. Moreover, the quality of the decrypted holographic images can be significantly improved by employing the complex‐amplitude encoding method and the modified visual secret sharing scheme, which adopts a new superposition operator to prevent fidelity loss. As a proof‐of‐concept demonstration, a prototype metasurface sample is designed, fabricated, and characterized, where the measured results agree very well with the numerical ones and the design goals. The proposed method can reinforce security level and improve fidelity of the decrypted message, rendering it appealing for applications in communication and anti‐counterfeiting.
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