量子电子学报2012，Vol.29Issue(6)：701-707,7.DOI:10.3969/j.issn.1007-5461.2012.06.008
耦合量子比特退纠缠的研究
Disentanglement of coupled qubits
摘要
Abstract
In Markovian environment, the nature of entanglement dynamics and entanglement sudden death of coupling qubits in the dissipative environment are investigated in detail using concurrence function. The results show that the dynamic evolution of entanglement is closely related with temperature of the system, the initial entanglement and the initial quantum state. Under normal circumstances, entanglement sudden death always occurs due to environmental effect. A specific area is found through numerical simulation where the decay of entanglement is very slow. Under the zero-temperature approximation, the specific conditions of entanglement sudden death and the equation for calculating the time of entanglement sudden death are both given.关键词
量子光学/纠缠/耦合量子比特/马尔科夫环境/共生纠缠度Key words
quantum optics/ entanglement/ coupled qubits/ Markovian environment/ concurrence分类
数理科学引用本文复制引用
冯斌斌,邹雄,嵇英华..耦合量子比特退纠缠的研究[J].量子电子学报,2012,29(6):701-707,7.基金项目
国家自然科学基金(11164009)资助项目 （11164009）
