摘要
We present a detailed study on the dynamics of two-qubit correlations in non-Markovian environments,applying the hierarchy equations approach.This treatment is free from the limitation of perturbative,Markovian or rotating wave approximations.It is shown that crossovers and sudden changes in the classical and quantum correlations can appear when the strength of the interaction between qubits is gradually reduced.For some special initial states,there are even sudden transitions between the classical and quantum correlations.
基金
Supported by the National Basic Research Program,and the National Natural Science Foundation of China under Grant Nos 60921091 and 10874162.
