Measuring intrinsic relaxation rates in superconductors using nonlinear response

This package includes the source code used for the simulations presented in the paper “Measuring intrinsic relaxation rates in superconductors using nonlinear response.” The code numerically solves the time-dependent Anderson pseudospin equations of motion for s- and d-wave superconductors driven by a short pump pulse, both with and without a phenomenological (energy- and momentum-dependent) damping of the pseudospins. From these simulations, the time-dependent superconducting gap and nonlinear current response are obtained.