Correlation dynamics of two-parameter qubit-qutrit states under decoherence

摘要

We investigate the dynamics of correlations for two-parameter qubit--qutrit states under various local decoherence channels including depahsing,phase-flip,bit-and trit-flip,bit-and trit-phase-flip,and depolarizing channels.We find that,under certain conditions,the classical correlations may not be affected by the noise or decay monotonically.The quantum correlations measured by measurement-induced disturbance (MID) show three types of dynamical behaviors:(i)monotonic decay to zero,(ii) monotonic decay to a nonzero steady value,(iii) increase from zero and then decrease to zero in a monotonic way.Consequently,we find that,differing from the dynamics of entanglement,the present classical and quantum correlations do not reveal sudden death behavior.