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

Ya Yang,Yan Liu,Jing Lu,Lan Zhou

Figure 4. The dynamics of concurrence ${{\mathbb{C}}}^{{AB}}$ for (a) an initial state of $\left|{\psi }_{{Ab}}\left(0\right)\right\rangle $ and (b) $\left|{\psi }_{{Ba}}\left(0\right)\right\rangle $. In images (a) and (b), the gray-blue solid line, the red dotted line and the blue dotted line are respectively used to indicate that the ratios of coupling intensity of the two cavities are 1, $\sqrt{2}$, and 2. The initial-state parameter, θ, is fixed at $\tfrac{\pi }{12}$ in all subgraphs.