4.555.56-0.4-0.200.20.4undriven f01(Phi)n=0 carrier suppressed:J0(beta)^2 = 0.008, beta = 2.58n=+1 sideband(brightest rung)probe frequency (GHz)flux (Phi / Phi0)Floquet sideband ladder, fd = 240 MHz, df = 620 MHzundriven f01(Phi)0.050.10.150.2response
(a.u.)