Entanglement of two Jaynes-Cummings atoms in single-excitation space

Ya Yang,Yan Liu,Jing Lu,Lan Zhou

Figure 5. A comparison of entanglement dynamics for four different initial states. The superscript Qαβ indicates the case for the initial state $\left|{\psi }_{\alpha \beta }\left(0\right)\right\rangle $. The ratio of the coupling strengths takes a value of $\tfrac{{g}_{A}}{{g}_{B}}=5$ in subgraphs (a) and (b), and $\tfrac{{g}_{A}}{{g}_{B}}=4$ in subgraphs (c) and (d). In all subgraphs, the initial-state parameter, θ, is fixed at $\tfrac{\pi }{12}$.