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

作     者：Abdul Basit Hamad Ali Fazal Badshah 葛国勤 Abdul Basi Hamad Ali Fazal Badshah Guo-Qin Ge

作者机构：School of Physics Huazhong University of Science and Technology Quantum Optics Lab.Department of Physics COMSATS Institute of Information Technology 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2017年第67卷第7期

页      面：29-34页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

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

主　　题：量子关联 非马尔科夫 噪声环境 粒子系统 马尔可夫 时间演化 混合系统 量子比特 

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.