极化(电化学)
加密
材料科学
电介质
拓扑(电路)
波长
特征向量
维数(图论)
光学
光电子学
物理
计算机科学
数学
量子力学
组合数学
物理化学
操作系统
化学
纯数学
作者
Jiuxu Wang,Fei Yu,Jin Chen,Jie Wang,Rongsheng Chen,Zengyue Zhao,Jian Chen,Xiaoshuang Chen,Wu Lu,Guanhai Li
标识
DOI:10.1002/adma.202304161
摘要
The Jones matrix, with eight degrees of freedom (DoFs), provides a general mathematical framework for the multifunctional design of metasurfaces. Theoretically, the maximum eight DoFs can be further extended in the spectrum dimension to endow unique encryption capabilities. However, the topology and intrinsic spectral responses of meta-atoms constrains the continuous engineering of polarization evolution over wavelength dimension. In this work, a forward evolution strategy to quickly establish the mapping relationships between the solutions of the dispersion Jones matrix and the spectral responses of meta-atoms is reported. Based on the eigenvector transformation method, arbitrary conjugate polarization channels over the continuous-spectrum dimension are successfully reconstructed. As a proof-of-concept, a silicon metadevice is demonstrated for optical information encryption transmission. Remarkably, the arbitrary combination forms of polarization and wavelength dimension increase the information capacity (210 ), and the measured polarization contrasts of the conjugate polarization conversion are >94% in the entire wavelength range (3-4 µm). It is believed that the proposed approach will benefit secure optical and quantum information technologies.
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