Figure 5

\(\Delta E_{n}\), \(\Delta Q^{\beta }_{n}\) and \(\Delta Q^{\text{coh}}_{n}\) with respect to n for fixed p (\(p=0.4\)), \(T=\omega _{E}=1\), \(\gamma =\frac{\pi }{14}\) and \(\delta =\frac{\pi }{6}\) which is the Markovian region of coupling presented in Fig. 2. \(\phi =\pi /2\) (a) and \(\phi =\pi \) (b) which are the non-Markovian regime presented in Fig. 3(b), and the initial state of system is excited state \(|0\rangle \)