Mathematica package for quantum mechanics calculations.
Clone this repo in the folder given by Mathematica with FileNameJoin@{$UserBaseDirectory, "Applications"} for the latest version of the code.
Alternatively, the core functionality can be used without installing the package at all; just import the main file directly from GitHub evaluating:
Get["https://raw.github.com/lucainnocenti/QM/master/QM.m"]