Enhancement of Quantum Correlations in Qubit-Qutrit Systems under the non-Markovian Environment  

作　　者：Abdul Basi Hamad Ali Fazal Badshah Guo-Qin Ge Abdul Basit;Hamad Ali;Fazal Badshah;葛国勤(School of Physics, Huazhong University of Science and Technology;Quantum Optics Lab.Department of Physics, COMSATS, Institute of Information Technology)

机构地区：School of Physics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China

出　　处：《Communications in Theoretical Physics》2017年第7期29-34,共6页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11274132 and 11550110180

摘　　要：We investigate the time evolution of quantum correlations of a hybrid qubit-qutrit system under the classical Ornstein-Uhlenbeck(OU) noise. Here we consider two different one-parameter families of qubit-qutrit states which independently interact with the non-Markovian reservoirs. A comparison with the Markovian dynamics reveals that for the same set of initial condition parameters, the non-Markovian behavior of the environment plays an important role in the enhancement of the survival time of quantum correlations. In addition, it is observed that the non-Markovian strength(γ/Γ) has a positive impact on the correlations time. For the initial separable states it is found that there is a finite time interval in which the geometric quantum discord is frozen despite the presence of a noisy environment and that interval can be further prolonged by using the non-Markovian property. Moreover, its decay can be significantly delayed.

关 键 词：ENTANGLEMENT geometric quantum discord Ornstein-Uhlenbeck noise non-Markovian environ-ment 

分 类 号：O413[理学—理论物理]