Extended Data Fig. 10: Rabi frequency compensation.
a and b show Rabi oscillations discretised into π/2 rotations and repeated 10 times to observe instability, with Rabi frequency feedback on, and off, respectively. The feedback protocol measures Pflip for 5, 7, 9, and 11 π/2 pulses, each of which should result in a 0.5 flip proportion in the ideal case. It then applies a correction to the microwave amplitude of δAMW = -gain * [P5 − P7 + P9 − P11], where Pn is the measured spin flip proportion after n π/2 rotations.
