Simulated Randomized Benchmarking of Dynamically Corrected Cross-Resonance Gate

We theoretically simulate a cross-resonance (CR) gate implemented by pulse sequences proposed in Phys.Rev. Lett. 118, 150502 (2017). These sequences allow mitigation of systematic noise to first order, but their effectiveness is limited by one-qubit gate imperfections. To improve the feasibility of such sequences, we make use of the fact that arbitrary Z rotations can be implemented virtually and with negligible error. We illustrate this by simulating randomized benchmarking for a system of coupled transmons and show that it is possible, under certain conditions, to improve the CR gate fidelity in the presence of quasistatic noise.