Symmetry and size effects on energy and entanglement of an exciton in coupled quantum dots

被引：0
|
作者：
沈曼 [1 ]
白彦魁 [1 ]
安兴涛 [2 ]
刘建军 [1 ,3 ]
机构：
[1] College of Physics Science & Information Engineering and Hebei Advanced Thin Film Laboratory, Hebei Normal University
[2] School of Sciences, Hebei University of Science and Technology
[3] Physics Department, Shijiazhuang University
来源：
Chinese Physics B | 2013年 / 04期
基金：
中国国家自然科学基金;
关键词：
exciton; coupled Gaussian quantum dot; symmetry; entanglement entropy;
D O I：
暂无
中图分类号：
O431.2 [量子光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study theoretically the essential properties of an exciton in vertically coupled Gaussian quantum dots in the presence of an external magnetic field. The ground state energy of a heavy-hole exciton is split into four energy levels due to the Zeeman effect. For the symmetrical system, the entanglement entropy of the exciton state can reach a value of 1. However, for a system with broken symmetry, it is close to zero. Our results are in good agreement with previous studies.
引用
收藏
页码：389 / 393
页数：5
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