含Chern数和Wilson环的光子晶体的拓扑不变量计算matlab代码.zip

# Topological-Invariant-Optics Topological Invariant Calculation for Photonic Crystals Including Chern Number and Wilson Loop  [](https://github.com/Sha-Group/Topological-Invariant-Optics) ## Publication 1. Ran Zhao, Guoda Xie, Menglin L. N. Chen, Zhihao Lan, Zhixiang Huang, and Wei E. I. Sha, “[First-Principle Calculation of Chern Number in Gyrotropic Photonic Crystals](https://doi.org/10.1364/OE.380077),” Optics Express, vol. 28 , no. 4, pp. 4638-4649, Feb. 2020. 2. Menglin L.N. Chen, Li Jun Jiang, Shuang Zhang, Ran Zhao, Zhihao Lan, and Wei E.I. Sha, “[Comparative Study of Hermitian and Non-Hermitian Topological Dielectric Photonic Crystals](https://doi.org/10.1103/PhysRevA.104.033501),” Physical Review A, vol. 104, pp. 033501, Sep. 2021. ## MATLAB Files FD_PCs_ChernNumber_Ex2/3.m: Chern number calculation in Gyrotropic photonic crystals with generalized finite-difference method FD_PCs_Wilson_loop.m: Wilson loop calculation in Hermitian and non-Hermitian dielectric photonic crystals with generalized finite-difference method ## Collaborators [Dr. Menglin CHEN](https://menglin-c.github.io) at Hong Kong Polytechnic University [Dr. Ran Zhao](https://faculty.uestc.edu.cn/zhaoran/zh_CN/jsxx/478933/jsxx/jsxx.htm) at University of Electronic Science and Technology of China