Figure 6

The effective temperature \(T_{\mathrm{{eff}}}\) (K) and quantum synchronization \(S_{c}\) of mechanical and rf resonators versus \(\gamma _{m}\) and \(\gamma _{\mathrm{lc}}\) without the voltage modulation (\(\eta =0\)). \(\omega _{0}=\omega _{\mathrm{lc}}\) in (a)-(c), and \(\omega _{\mathrm{lc}}/\omega _{0}=10\) in (d)-(f). The other parameters are the same as in Fig. 3