Q factor of the Rabi oscillations as a function of the Rabi frequency, where Q = T Rabi / T pi and T pi = 1/2 Omega . The presented data (purple circles) are calculated using T Rabi and T pi extracted from fits to Rabi measurements using the equation above. The error bars are obtained from the 68% confidence intervals of each fit parameter. The Rabi measurement sequence is drawn above the panel (not drawn to scale), where r is the reference readout, s is the signal readout and t is the pulse duration.