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arXiv quant-ph/0203102quant-ph
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熵与维格纳函数

Entropy and Wigner Functions

G. Manfredi, M. R. Feix

摘要:

讨论了基于Wigner函数的另一种量子熵定义的性质。这种定义是从量子力学的维格纳表示中自然产生的,并且可以很容易地量化量子态的纠缠量。结果表明,平滑的维格纳函数诱导熵的增加。这一事实被用来导出一些简单的规则来构造正定的概率分布,这些概率分布也是可容许的Wigner函数

英文摘要:

The properties of an alternative definition of quantum entropy, based on Wigner functions, are discussed. Such definition emerges naturally from the Wigner representation of quantum mechanics, and can easily quantify the amount of entanglement of a quantum state. It is shown that smoothing of the Wigner function induces an increase in entropy. This fact is used to derive some simple rules to construct positive definite probability distributions which are also admissible Wigner functions

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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