Negativity of the Wigner function as an indicator of non-classicality

被引：606

作者：

Kenfack, A

Zyczkowski, K

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[2] Univ Dschang, Dept Phys, Dschang, Cameroon

[3] Jagiellonian Univ, Inst Fizyki Imienia Mariana Smoluchowskiego, PL-30059 Krakow, Poland

[4] Polish Acad Sci, Ctr Fizyki Teoretycznej, PL-02668 Warsaw, Poland

来源：

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS | 2004年 / 6卷 / 10期

关键词：

quasiprobability distribution functions; non-classicality negativity of Wigner functions; Fock states; squeezed states; generalized Fock states; Schrodinger cat state;

D O I：

10.1088/1464-4266/6/10/003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A measure of non-classicality of quantum states based on the volume of the negative part of the Wigner function is proposed. We analyse this quantity for Fock states, squeezed displaced Fock states and cat-like states defined as coherent superposition of two Gaussian wavepackets.

引用

页码：396 / 404

页数：9

共 67 条

[1] Phase distribution from the Wigner function for superpositions of squeezed displaced Fock states [J].