Dispersive Full‐Channel Jones Matrix Modulation in Elliptical Polarization Bases via a Single‐Layered Metasurface
Hairong He, Guangtao Cao, S. Zhang, Hui Xu, Zhiquan Chen, Meiyu Peng, Yuting Jiang, Yueqiang Hu, Hui Jing, Huigao Duan, Hui Yang
Abstract
Polarization and wavelength multiplexing are two fundamental and extensively utilized techniques for enhancing capacity in multi-functional meta-optics. Despite the fact that existing works have pushed the channel numbers of Jones matrix (i.e., polarization) to their upper limit, the realization of wavelength-multiplexed full-channel Jones matrix manipulation remains a formidable challenge. Here, a general strategy is proposed to implement dispersive full-channel Jones matrix modulation via a single-layered metasurface. By synergistic dispersion engineering and polarization bases transformation, the proposed metasurface enables simultaneous modulation of all four Jones matrix channels across multiple wavelengths. This strategy, counterintuitively, unlocks the fundamental upper limit channel imposed by conventional linear or circular polarization bases. As a proof of concept, a dual-wavelength and four-elliptical-polarization multiplexed meta-hologram is experimentally and numerically demonstrated, which is capable of achieving eight color vectorial holographic images. By extending it to 3D space with sixteen vectorial holographic images, a dual-key-space convolutional encryption platform is further demonstrated, which is able to achieve parallel optical information transmission with ultra-high security. The proposed paradigm overcomes the intrinsic channel-capacity limitations of single-layer metasurfaces, opening new pathways for the development of advanced multi-functional meta-devices and high-security information processing systems.