Fig. 7: Numerical benchmarks for larger system sizes.
From: Robustly learning the Hamiltonian dynamics of a superconducting quantum processor
Recovery error of frequencies (golden) and Hamiltonians (red) from simulated time series averaged over 20 instances of Harper Hamiltonians for different system sizes. The error bars represent one standard deviation. The evolution is simulated for up to 0.6 μs and sampled at a rate of 250 MHz. Statistical noise is simulated using 103 shots per expected value and SPAM is modeled by using randomly chosen idle qubit and coupler frequencies, linear ramping of 1.5 GHz/s padded by 0.05 ns. The fitting error of the time series is depicted in blue, right y-axis. We refer to the Supplemental Material, Sec. VII A for details.
