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arXiv 2006.13845quant-ph
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相对熵作为厄米特系统与非厄米特系统区别的度量

Relative Entropy as a Measure of Difference Between Hermitian and Non-Hermitian Systems

Kabgyun Jeong, Kyu-Won Park, Jaewan Kim

摘要:

我们采用相对熵作为度量来量化椭圆光学微腔中厄米系统和非厄米系统本征模的差异。发现在集体兰姆位移范围内的相对熵平均值较大,而在自能范围内的相对熵平均值较小。此外,非厄米系统中的弱相互作用和强相互作用在相对熵方面表现出相当不同的行为,从而在椭圆微腔中表现出明显的本征模交换。

英文摘要:

We employ the relative entropy as a measure to quantify the difference of eigenmodes between Hermitian and non-Hermitian systems in elliptic optical microcavities. We have found that the average value of the relative entropy in the range of the collective Lamb shift is large, while that in the range of self-energy is small. Furthermore, the weak and strong interactions in the non-Hermitian system exhibit rather different behaviors in term of the relative entropy, and thus it displays an obvious exchange of eigenmodes in the elliptic microcavity.

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