Back action of nonequilibrium phonons on the optically induced dynamics in semiconductor quantum dots -: art. no. 035302

被引：46
|
作者：
Krügel, A [1 ]
Axt, VM [1 ]
Kuhn, T [1 ]
机构：
[1] Univ Munster, Inst Festkorpertheorie, D-48149 Munster, Germany
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 03期
关键词：
D O I：
10.1103/PhysRevB.73.035302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamics in a GaAs-type quantum dot induced by excitation with Gaussian laser pulses of arbitrary duration are calculated in the density matrix formalism using the correlation expansion. In particular the back-action of nonequilibrium phonons, i.e., the coherent phonon amplitude and the nonequilibrium phonon occupation, on the electronic two-level system are studied. We find that especially for long pulses and low temperatures nonequilibrium phonons play an important role and cannot be neglected.
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页数：9
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