Expressibility and entangling capability of parametrized quantum circuits

This is a repository to reproduce results from https://arxiv.org/abs/1905.10876

Content:

• ExprEnt.py, utility functions that compute expressibility (expr) and entangling capability (ent)
• VariationalCircuit.py, definition of the VariationalCircuit class
• • circuits_3q.py, circuits_4q.py, etc., files with instances of variational circuits
• circuit-analyser.ipynb, notebook that analyses variational circuits
• csv files that store the results of the analysis
• plotting.ipynb and plotting2.ipynb, notebooks to visualize the data
• pareto-front.ipynb, notebook that studies complexity and draws Pareto's front