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中文摘要：
研究了非马尔可夫噪声环境影响下两个量子比特纠缠的动力学行为．对比讨论了因式化纠缠在描述纠缠动力学演化的有效性．结果表明：对于贝尔态、最大纠缠混合态等特殊初态，当噪声环境的影响比较弱时，利用纠缠的因式化分解形式可以有效地刻画纠缠的动力学演化；对于一般初态的情况，当系统的纠缠比较大，噪声环境的影响比较弱时，纠缠的因式化分解形式也可以有效地刻画纠缠的动力学演化．
英文摘要：
The validity of factorization law for the entanglement evolution of two qubits coupled to two independent non-Markovian channels is investigated. It is found that for some initial states, such as the Bell state and the maximally entangled mixed state, the entanglement can be characterized by the factorized entanglement when the effects of the channels are weak. For the general initial states, the factorized entanglement provides us with a good approximation to characterize the entanglement dynamics when the entanglement is large.
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