Nonclassical properties of superposition of two coherent states shifted in phase by 3p/2

被引：12

作者：

Ahmad, Muhammad Ashfaq ^{[1
]}

Zeng Ran ^{[1
]}

Liu Shu-Tian ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2006年 / 23卷 / 09期

关键词：

D O I：

10.1088/0256-307X/23/9/024

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the quantum superposition of two coherent states shifted in phase by 2/3 pi, vertical bar alpha > and vertical bar-i alpha >, as well as special states that are characterized solely with respect to amplitude alpha. According to analysis of nonclassical properties such as oscillatory and sub-Poissonian distribution of photon numbers, photon antibunching, quadrature squeezing, and negativity of Winger function, it is concluded that the considered superposition state is a nonclassical state. Also, the special state is found to exhibit even stronger nonclassical features when relative phase phi of the superposition is equal to the average photon number vertical bar alpha vertical bar(2).

引用

页码：2438 / 2441

页数：4

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