% 7 I *+] , S$ ĹĻ%( IUHVExtended Data Fig. 4 | Qubit resonance frequencies as a function of
magnetic field. Colour plot indicating the transport current ΔI through the
double dot system, as a function of external magnetic field B 0 and the
frequency f of the applied microwave signal. We have numerically subtracted
the mean of each row and column in each of the three individual colour plots, to
account for the slow drifts in transport current, as well as the line resonances in
our fridge cabling. The two bright lines indicate an increase in the transport
current due to the microwave rotating either spin and thus lifting PSB.