Fig. 8: Dynamics of total error ϵ(t) on IBM quantum devices, Kolkata.
From: Dynamical transition in controllable quantum neural networks with large depth
Solid and dashed curves represent experimental and theoretical results. An n = 2 qubit D = 4-layer hardware efficient ansatz (with L = 16 parameters) is utilized to optimize with respect to XXZ model observable with J = 4. The shaded areas represent the fluctuation (standard deviation) in the experimental data.
