Fig. 5
Coherent spin oscillations. a Voltage signal applied to G1 for performing the Rabi experiment. The square pulse shifts the qubit between PSB and Coulomb blockade (CB), lasting for 210 and 100 ns, respectively. The applied RF burst rotates the initialized spin-down vector for an angle proportional to its duration τburst and the square root of power \(\sqrt P\). b Corrected current ICORR versus τburst and P for an out-of-plane magnetic field of 127 mT and an RF frequency of 5.966 GHz for device C after thermal cycling, showing Rabi oscillations. The current data has been corrected by removing the average column and row values from the corresponding data points. c Current ICORR vs τburst traces for P = 7, 11 and 13 dBm. For clarity, the traces for 11 and 13 dBm are shifted by 200 and 400 fA, respectively. The Rabi frequencies were extracted by fitting the raw data to \(\frac{A}{{\tau _{{\mathrm{burst}}}^a}}\,{\mathrm{sin}}\,(2\pi f_{{\mathrm{Rabi}}}\tau _{{\mathrm{burst}}} + \phi ) + {\mathrm{offset}} + c\sqrt {\tau _{{\mathrm{burst}}}}\). The offset and \(c\sqrt {\tau _{{\mathrm{burst}}}}\) have been subtracted from the shown traces. d Dependence of the Rabi frequency on the applied RF power
