Quantum non-Gaussianity of single-mode Schrodinger cat states based on Kurtosis

被引：7

作者：

Xiang, Shao-Hua ^{[1
]}

Song, Ke-Hui ^{[1
]}

机构：

[1] Huaihua Univ, Dept Phys & Informat Engn, Huaihua 418008, Hunan, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL D | 2015年 / 69卷 / 11期

基金：

中国国家自然科学基金;

关键词：

ODD COHERENT STATES; NON-CLASSICALITY; DECOHERENCE; DISTANCE; OPTICS; EVEN;

D O I：

10.1140/epjd/e2015-60480-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We evaluate the non-Gaussianity of single-mode Schrodinger cat states based on measure of the kurtosis. It is found that for odd Schrodinger cat state, its kurtosis is always negative, whereas the kurtosis of even Schrodinger cat state may be negative or positive. We then introduce the average kurtosis to measure how far the distribution of Schrodinger cat states is from their corresponding Gaussian ones. Finally, we discuss the relation between the non-Gaussianity and nonclassicality of such states.

引用

页数：9

共 40 条

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