Hello I am particularly interested in studying polarization dependent photocurrent in topological insulators. I came across several papers using nonequilibrium Green's function (NEGE) method to do this topic. I just attached them for your information (Nature Communications: 8, 1037 and Physical Review Research 2, 023055, 2020). I am a novice for KWANT. I wonder if it can be applied to calculate polarization dependent photocurrent in topological insulators (for example to reproduce the figure 1b and 2b in Nature Communications: 8, 1037 ). If so, are there any examples to demonstrate the computational protocol? Thank you, David