量子电子学报2012，Vol.29Issue(3)：323-329,7.DOI:10.3969/j.issn.1007-5461.2012.03.011
与库相互作用的非耦合两比特系统量子失协动力学
Quantum discord dynamics of non-coupled two-qubit system interacting with reservoirs
摘要
Abstract
A general expression of quantum discord for X structure density matrix was derived. The dissipative dynamics of non-coupled two qubits independently interacting with their reservoir was solved by the non-Markovian master equation in a single excitation state. Under the detuning spectral density, the quantum discord dynamics was discussed and compared in different coupling regime. The results showed that this expression was employed to any physical system having X structure density matrix, and the two variants of master equations were exploited in different coupled regimes in the description of quantum correlation dynamics. It is convenient to calculate the quantum discord for later study and provide certain reference about what kind of master equation used in different coupling areas.关键词
量子光学/量子失协/非马尔科夫主方程/关联函数Key words
quantum optics/ quantum discord/ non-Markovian master equation/ correlation function分类
数理科学引用本文复制引用
王小云,丁邦福,赵鹤平..与库相互作用的非耦合两比特系统量子失协动力学[J].量子电子学报,2012,29(3):323-329,7.基金项目
湖南省自然科学基金(09JJ6011)、湖南省教育厅资助项目(10A100,07C528) （09JJ6011）
