Fig. 6.

Measured and numerical quantum Rabi model qubit dynamics for nondegenerate qubit frequency. The cases implemented are $g^{\mathrm{R}}\mathrm{∕}{\omega }_{\mathrm{q}}^{\mathrm{R}}~4$ (top), ∼2 (middle) and ∼1 (bottom), with the plots showing measured qubit dynamics (left), numerically simulated dynamics of a Trotterised QRM with the measured $T_{\mathrm{1,r}}~3.5$ μs included (centre), and ideal Rabi dynamics (right). The results illustrate that the nondegenerate-qubit dynamics do not deviate significantly from the degenerate-qubit case in the regime where ${\omega }_{\mathrm{r}}^{\mathrm{R}}\gg {\omega }_{\mathrm{q}}^{\mathrm{R}}$. The measured dynamics exhibit many qualitative features in good agreement with the ideal QRM and show excellent agreement with the numerical Trotter simulation with decay, indicating that the fidelity of the measured results to the ideal case is limited primarily by resonator decay.