Dynamic statistical properties of squeezed coherent state superpositions

被引：3
|
作者：
Sales, J. S. [1 ,2 ]
de Almeida, N. G. [2 ]
机构：
[1] Univ Estadual Goias, Unucet, BR-75132903 Anapolis, Go, Brazil
[2] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2013年 / 392卷 / 16期
关键词：
Squeezed coherent state superpositions; Statistical properties of squeezed states; Sub-Poissonian statistics; ENTANGLEMENT; GENERATION; ATOMS;
D O I：
10.1016/j.physa.2013.02.017
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We carried out a study of statistical properties of a squeezed coherent state superposition (SCSS) evolving under a thermal reservoir at zero and finite temperature. Our results reveal some peculiarities not noticed by previous studies, which were mainly focused on ideal (lossless) properties of SCSS. Our main results indicate the existence of realistic parameters for which SCSS, at zero absolute, remains sub-Poissonian or squeezed asymptotically, while, at finite temperature, we found that SCSS only loses its squeezing or sub-Poissonian character at large times as compared with the time needed to the SCSS become a complete mixture. (C) 2013 Elsevier B.V. All rights reserved.
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页码：3308 / 3315
页数：8
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