Mitigating off-resonant error in the cross-resonance gate
Mitigating off-resonant error in the cross-resonance gate
Off-resonant error for a driven quantum system refers to interactions due to the input drives having non-zero spectral overlap with unwanted system transitions. For the cross-resonance gate, this includes leakage as well as off-diagonal computational interactions that lead to bit-flip error on the control qubit. In this work, we quantify …