Dual Jones Matrices Empowered Six Phase Channels Modulation with Single‐Layer Monoatomic Metasurfaces

Abstract

A comprehensive manipulation of the Jones matrix phase channels is crucial for enhancing the information capacity and security of the metasurface. However, a single‐layer planar metasurface, without the incorporation of chirality, can only achieve a maximum of three independent phase channels for single Jones matrix under either linear or circular polarization bases. Here, an effective strategy is proposed that utilizes dual Jones matrices in different polarization bases with a single‐layer monoatomic metasurface, thus extending the number of independent phase channels to six. To encode six holographic images into these six phase channels, a three‐step gradient descent algorithm is introduced. As a proof of principle, a metasurface consisting of arrays of monoatomic dielectric structure is designed and fabricated in each unit cell, which exhibits six independent holographic images in the far field. The demonstrated metasurface platform is expected to open up new possibilities for the development of optical devices for applications in high‐capacity information storage, high‐security encrypted communication, and high‐solution optical displays.