Separating transient leakage exposure from endpoint cancellation in fast transmon single-qubit gates

arXiv:2607.05779v1 Announce Type: new Abstract: Fast single-qubit gates on weakly anharmonic transmons are limited by leakage to noncomputational states, and standard mitigations such as DRAG (derivative removal by adiabatic gate) act on the leakage amplitude at the end of the gate. We show that th