Spin Squeezing for Superpositions of Dicke States

被引：1
|
作者：
Hu, Xiu-Xia [1 ]
Hu, Guo-Jin [2 ]
机构：
[1] Jiangxi Agr Univ, Dept Phys, Nanchang 330032, Peoples R China
[2] Nanchang Normal Univ, Dept Phys, Nanchang 330032, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2014年 / 53卷 / 02期
关键词：
Spin squeezing; Superposition; Dicke states; Mean spin direction; Optimally squeezed angle; ENTANGLEMENT;
D O I：
10.1007/s10773-013-1843-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate spin squeezing for superpositions of Dicke states. We derive the mean spin direction, the length of mean spin, the optimally squeezed angle and numerically calculate the spin squeezing parameter, which is determined by on the superposed coefficients and the relative phase. Approximate same superposed amplitude and the smaller relative phase lead to the larger the length of mean spin, the stronger spin squeezing and spin squeezing maintains in a longer time interval.
引用
收藏
页码：586 / 591
页数：6
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