Dynamical behaviors of an exciton in an asymmetric double coupled quantum dot

被引：0

作者：

Liu C.-D. ^{[1
]}

Liu W. ^{[2
]}

Li F.-L. ^{[3
]}

Wu D.-P. ^{[4
]}

Su X.-Y. ^{[2
]}

机构：

[1] School of Transportation and Vehicle Engineering, Shan Dong University of Technology, Zibo

[2] Department of Physics, Qufu Normal University, Qufu

[3] No. 1 Middle School, Zichuan, Zibo

[4] No. 1 Middle School, Qingdao

来源：

Frontiers of Physics in China | 2006年 / 1卷 / 2期

关键词：

Exciton; Floquet states; Localization; Quantum dots; Quasienergy;

D O I：

10.1007/s11467-006-0007-y

中图分类号：

学科分类号：

摘要：

Dynamical behaviors of an exciton in an asymmetric double coupled quantum dot and an alternatingcurrent (ac) electric field have been analyzed based on the two-level approximation theory, and the conditions under which dynamical localization occurs are obtained. It shows that when the amplitude of the ac electric field is small, the Coulomb interaction plays an important role. The dynamical behaviors of the exciton are mainly confined in the low-level subspace. When the ratio of the field intensity to frequency is the root of Bessel function, electron and hole are localized in one dot, and they can be divided with the increasing amplitude of the ac electric field. © Higher Education Press and Springer-Verlag 2006.

引用

页码：238 / 242

页数：4

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