对偶(语法数字)
材料科学
波长
光电子学
纳米技术
光学
物理
艺术
文学类
作者
Chang Peng,Tian Huang,Chen Chen,Hong‐Chao Liu,Longzhou Xiao,Zile Li,Shaohua Yu,Guoxing Zheng
出处
期刊:ACS Nano
[American Chemical Society]
日期:2024-01-26
标识
DOI:10.1021/acsnano.3c10723
摘要
Logic operation serves as the foundation and core element of computing networks; it will bring huge vitality to advanced information processing with its adaptation in the optical domain. As fundamental logic operations, AND and exclusive OR (XOR) operations serve a multitude of purposes, such as their ability to cooperate in enabling image processing and interpretation. Here, we propose and experimentally demonstrate a wavelength multiplexed AND and XOR function based on metasurfaces. By combining two cosine gratings with distinct frequencies and an initial phase difference of π/2, we extract the similarities and differences between two input images simultaneously by illuminating them with 445 and 633 nm wavelengths. Additionally, we explore its potential in information encryption, where overall security is enhanced by distributing distinct parts of initial information and encoded keys to different receivers. This design possesses the benefits of convenient mode switching and high-quality imaging, facilitating advanced applications in pattern recognition, machine vision, medical diagnosis, etc.
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