Fig. 3. Subdiffusive transport on the superconducting qubit ladder with disorder.

a The time evolution of autocorrelation function C_1,1(t) for the qubit ladder with L = 12 and different values of disorder strength W, ranging from W/2π = 35 MHz ($W/\overline{J^{\parallel }}\simeq 0.5$) to W/2π = 70 MHz ($W/\overline{J^{\parallel }}\simeq 9.6$). Markers (lines) are experimental (numerical) data. b Transport exponent α as a function of W obtained from fitting the data of C_1,1(t). Error bars (experimental data) and shaded regions (numerical data) represent the standard deviation.