热储中量子不和谐与双原子纠缠的相关关系

原子与分子物理学报 Pub Date : 2014-04-10 DOI:10.1155/2014/564805

Xue-qun Yan, Zhuan-Lin Yue

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引用次数: 2

摘要

研究了热储中双量子比特系统的量子不和谐和纠缠的时间演化。我们发现量子纠缠和量子不和谐在动力学演化行为中不存在简单的有序关系;也就是说，在进化过程中，量子不和谐可能比纠缠更小或更大。然而，序关系的变化与平均光子数之间有很强的相关性。此外，它还表明纠缠不是非经典性的最强形式。

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Correlated Relation between Quantum Discord and Entanglement of Two-Atom in Thermal Reservoirs

We study the time evolution of quantum discord and entanglement of a two-qubit system in thermal reservoirs. We find that there are no simple ordering relations between entanglement and quantum discord for the dynamical evolution behavior; that is, quantum discord may be smaller or larger than entanglement in the evolution process. However, a strong correlation between changes of the ordering relations and the mean photon number is found. In addition, it also shows that entanglement is not the strongest form of nonclassicality.

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