Wigner functions of multiple-photon excited coherent states

被引：4

作者：

Lan Hai-Jiang ^{[1
,2
]}

Pang Hua-Feng ^{[1
]}

Wei Lan-Fu ^{[1
]}

机构：

[1] SW Jiaotong Univ, Lab Quantum Opt Elect Informat, Chengdu 610031, Peoples R China

[2] Luzhou Teachers Coll, Dept Phys & Informat Sci, Liuzhou 545003, Peoples R China

来源：

ACTA PHYSICA SINICA | 2009年 / 58卷 / 12期

基金：

中国国家自然科学基金;

关键词：

non-classical quantum states; excited coherent states; Wigner function; non-classicality; RADIATION-FIELD; QUANTUM STATES; OPERATORS; INVERSE; EVEN; GENERATION;

D O I：

10.7498/aps.58.8281

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Wigner functions in phase space are reconstructed for the excited coherent states, which are generated by applying the inverse of k-Boson operators repeatedly to the coherent states. The non-classicality of these states is discussed by calculating their Wigner functions in Fock-state space. Numerical results show that these excited coherent states always reveal non-classical characteristics, no matter whether the excited number k is even or odd, and also the corresponding non-classicality is more obvious with the number k increasing.

引用

页码：8281 / 8288

页数：8

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