Figure 6

Concurrence (solid line) and quantum discord (dashed line) with respect to ξ for initial quantum correlation Eq. (19) (a). Trace distance Eq. (23) against the number of collisions n with different ξ in the Markovian coupling region of Fig. 2 (\(\gamma =\frac{\pi }{14}\), \(\delta =\frac{\pi }{6}\)), a non-Markovian process is induced by initial quantum correlation Eq. (19), and the bound of Eq. (24) is indicated by the upper horizontal line (b)