Fig. 2: Rabi oscillation power dependence.
From: Rabi oscillations in a superconducting nanowire circuit
a Rabi oscillations measured in sample S2 with varied drive amplitude. b The fitted Rabi frequencies measured in S1 as well as S2 fit to the two-level Rabi behavior until they deviate at frequencies exceeding the anharmonicity. The values for the drive detuning Δ obtained from the fit are \({\varDelta }_{{\rm{S1}}}^{{\rm{fit}}}=(0.5\pm 0.1)\) MHz and \({\varDelta }_{{\rm{S2}}}^{{\rm{fit}}}=(1.3\pm 0.1)\) MHz. Errorbands include a variation of the number of points fitted between 6 and 16. Compared with spectroscopy the Rabis were driven with ΔS1 = (0.8 ± 0.5) MHz and ΔS2 = (1.8 ± 1) MHz, respectively. In sample S1, a smaller anharmonicity agrees with a lower normal state wire resistance (Table 1).
