phase fluctuation enhances nonclassical features via creation of indirect spontaneous emission root [@sint].

It is not difficult to see from Figs. \[fig5\], \[fig6\] and \[fig7\] that $V_{s}$ is very close to 0.4, which is by far larger than the case when $\Omega=0$. In the quest of improving the degree of entanglement, $V_{s}$ is plotted against $time$ for $\gamma=0.75\Gamma$, $\theta=0.25$ and different values of $A$. As unambiguously presented in Fig. \[fig8\], the degree of entanglement is found to increase with the linear gain coefficient. This implies that in the process of practical utilization, one can manipulate the rate at which the atoms are injected into the cavity to get an optimum entanglement. It is worth noting that the values of $A$ are set in this manner so that one can able to make comparison with the case when $\Omega=0$ rather than aiming at finding the highest degree of entanglement. In light of this, upon comparing the results shown in Figs. \[fig4\] and \[fig8\], one can readily see that the degree of entanglement is larger when $\Omega=0$ at earlier times, whereas the opposite holds for longer time span where the oscillation naturally subsides. Although there is no earlier analysis that supports this 