Theory of ultrafast nonlinear optics of Coulomb-coupled semiconductor quantum dots:: Rabi oscillations and pump-probe spectra

被引：64

作者：

Danckwerts, J ^{[1
]}

Ahn, KJ ^{[1
]}

Förstner, J ^{[1
]}

Knorr, A ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Theoret Phys, AG Nichtlineare Opt & Quantenelekt, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.73.165318

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the optical properties of a Coulomb-coupled double-quantum dot system excited by coherent light pulses. Basic effects of Coulomb coupling regarding linear and nonlinear optical processes are discussed. By numerically solving the Heisenberg equation of motion we are able to present the temporal evolution of the system's density matrix for a wide range of coupling parameters. The two main coupling effects in dipole approximation, biexcitonic shift and Forster energy transfer, are investigated and their qualitative and quantitative influence on absorption spectra, Rabi oscillations, and single- and two-pulse excitation is discussed. We present simulated differential transmission spectra to allow for comparison with recent experimental studies.

引用

页数：16

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