中国物理B ›› 2013, Vol. 22 ›› Issue (5): 50303-050303.doi: 10.1088/1674-1056/22/5/050303
袁浩a, 韦联福a b
Yuan Hao (袁浩)a, Wei Lian-Fu (韦联福)a b
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.
中图分类号: (Decoherence; open systems; quantum statistical methods)