Figure 2

Nonlinear capacitance C _nl and power spectral density S _I (ω) of current noise. (A) Nonlinear capacitance plotted against \(\overline{\omega }(=\omega /{\omega }_{r})\). Nonlinear capacitance C _nl is normalized by γnq ². (B) Power spectral density of current noise is plotted against \(\overline{\omega }\). \({S}_{I}(\overline{\omega })\) is normalized by \({S}_{0}\mathrm{(=4}\overline{P}\mathrm{(1}-\overline{P})n{q}^{2}{\omega }_{r})\). Traces respectively correspond to the values of \({\overline{\omega }}_{\eta }\): 1 (black), 2 (blue), and 5 (red).