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arXiv 0705.4373quant-ph
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Jaynes-Cummings模型的线性熵、冯诺伊曼熵和原子Wehrl熵之间的关系

Relationship between the linear entropy, the von Neumann entropy and the atomic Wehrl entropy for the Jaynes-Cummings model

Faisal A. A. El-Orany

摘要:

线性熵、冯诺伊曼熵和原子Wehrl熵常被用来量化量子系统中的纠缠。这些关系提供了Jaynes-Cummings模型(JCM)中纠缠的典型信息。在这封信中,我们解释了这个解析的起源,并得出一个封闭的形式为原子韦尔熵。此外,我们还发现用布洛赫球半径来量化JCM中的纠缠比用熵关系来量化更方便。

英文摘要:

The linear entropy, the von Neumann entropy and the atomic Wehrl entropy are frequently used to quantify entanglement in the quantum systems. These relations provide typical information on the entanglement in the Jaynes-Cummings model (JCM). In this Letter, we explain the origin of this analytically and derive a closed form for the atomic Wehrl entropy. Moreover, we show that it is more convenient to use the Bloch sphere radius for quantifying entanglement in the JCM instead of these entropic relations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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