We developed a general framework for parallel all-optical logic operations with independent phase control of arbitrary orthogonal polarization state enabled by a single-layer metasurface. A pair of orthogonal circular polarized bases are used as two input channels of the logic operator, and their four combinations perfectly match various binary input states. Correspondingly, distinct phase profiles are encoded into the metasurface, which enables parallel operation of the two logic gates by way of polarization switching. It allows for an efficient and compact way to implement multi-channel multiplexed logic gate operations with the capability of fast optical computing at the chip scale.

基于垂直腔表面发射激光器（VCSEL）自身的光反馈以及线性电光调制效应，设计了一种实现动态可重构的光混沌逻辑运算的技术方案。归一化注入电流被调制为逻辑输入，横向电场被调制为控制信号，逻辑输出通过对VCSEL输出的x偏振光光强的均值与阈值做差进行解调。通过转换控制信号与逻辑输入的逻辑运算关系，系统就能在基本的逻辑运算如NOT、AND、NAND、OR、NOR、XOR以及XNOR间自由切换。码元宽度为600 ps且噪声强度高达2.75×10⁹情况下，逻辑运算的成功概率仍为1，表明系统具有良好的抗噪声性能。并且噪声强度等于2.5×10⁹时，码元宽度至少达到579 ps，逻辑运算的成功概率才恒为1。本文研究对于研发快速稳定的组合逻辑运算器件等具有参考价值。