Fig. 4

Experiment results for a mixed k-body Hamiltonian with uniform coefficients: (a) distribution of solution for \(p=1\) showing both of correct and incorrect solutions with comparable probability values, (b) distribution of solution for \(p=32\), indicating that increasing the layer number improves the solution; non-correct solutions are suppressed, (c) Curve showing decreases in error by iteration and achieve convergence after more than 500 iterations, (d) performance table showing that increasing the number of layers will improve the performance, i.e., reducing objective error and increasing the xRAR.