Supplementary information

- SlowQuant, verion of SlowQuant used together with the Jupyter Notebooks - determining_the_coefficients.ipynb, Notebook that shows how the coefficients A, B, C, D, and, E can be found for theEqs. (21), (46), and, (48). - checking_eq_21_46_48.ipynb, Notebook that symbolically verifies Eqs. (21), (46), and, (48). - timings.ipynb, Notebook that contains the implementation of the Eqs. (45), (47), and, (49). Aswell as calculate the timings for these implementations, and the implementation using scipy.sparse.linalg.expm_multiply.