Figure 3

(a) Bipartite entanglement \(E_{mb}\), \(E_{ab}\), and \(E_{am}\) and (b) tripartite entanglement \(R_{\tau}^{\min}\) versus detuning \(\tilde{\Delta}_{c}\). Bipartite and tripartite entanglement versus (c) temperature T and (d) mechanical damping rate \(\gamma _{b}\) where \(\tilde{\Delta}_{c}\) is optimized for each entanglement, respectively. The other parameters are the same as in Fig. 2