Erratum: Mechanism for quantum speedup in open quantum systems [Phys. Rev. A 93, 020105(R) (2016)]

Figure 1

(a) Non-Markovianity $\mathcal{N}$ (blue dashed line) and QSL time ${\tau }_{\mathrm{QSL}}$ (red solid line) as a function of the coupling constant $\eta$. The inset shows the energy spectrum of the total system, where the green dot-dashed line denotes the energy of the formed bound state. The obtained ${\left|c\left(t\right)\right|}^2$ (b) and the corresponding decay rate $\mathrm{\Gamma }\left(t\right)$ (c) with and without bound state. The bound state is formed when $\eta >{\eta }_c=0.1$. The parameters are ${\omega }_c\tau =800, {\omega }_0/{\omega }_c=0.1$, and $s=1$.