Phonon-induced pure dephasing in exciton-biexciton quantum dot systems driven by ultrafast laser pulse sequences

被引：49
作者：
Axt, VM
Kuhn, T
Vagov, A
Peeters, FM
机构：
[1] Univ Munster, Inst Festkorpertheorie, D-48149 Munster, Germany
[2] Univ Antwerp, Dept Phys, B-2020 Antwerp, Belgium
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.72.125309
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A semiconductor quantum dot model accounting for single exciton as well as biexciton states coupled to phonons and laser light is investigated in the limit of strong electronic confinement. For an arbitrary sequence of excitations with ultrafast pulses analytical solutions are obtained for all density-matrix elements. The results are nonperturbative with respect to both the carrier-phonon and the carrier-light coupling. Numerical results for a single pulse excitation are presented illustrating spectral features of our solution as well as pulse area and temperature dependences.
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页数：15
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