For these experiments, we use the "alternating-ansatz" using vqe.circuits.generate_alternating_vqe_j1j2_circuit which is a variant of the Hamiltonian Variational Ansatz.
We also set J2=1.25.
In this method, follow the method proposed by Larocca et al to evaluate overparameterization in PQCs. For 4 and 5 qubits, we run 10 trials of VQE starting with random parameter initializations for different numbers of layers of the ansatz and determine the rate at which these trials achieve different accuracy levels.
The data generation for this is done using run_J1J2_overparameterization.py. Data is stored under data/v2/overparameterization/.
This data can be plotted using plotting/v2/plot_overparameterization.py and figures can be found in figures/v2/
TBD