Dresden 2011 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 70: Quantum Dots and Wires: Theory
HL 70.12: Vortrag
Donnerstag, 17. März 2011, 13:15–13:30, POT 151
Microscopic description of the dynamics of luminescence and dephasing of semiconductor quantum dots — •Heinrich A.M. Leymann1, Matthias Florian2, Jan Wiersig1, and Frank Jahnke2 — 1Institut für Theoretische Physik, Universität Magdeburg, 39016 Magdeburg — 2Institut für Theoretische Physik, Universität Bremen, 28334 Bremen
Semiconductor quantum dots (QDs) are of considerable interest due to their potential for device applications such as lasers and non-classical light sources, as well as fundamental studies.
We present a microscopic theory for the photoluminescence of QDs based on an equation of motion technique. The influence of Coulomb- and carrier-photon interaction will be discussed in terms of correlation functions. A consistent treatment of pumping, scattering and dephasing will be presented that extends the cluster-expansion technique used in [1].
Furthermore results for a single QD emitter coupled to a single cavity mode will be discussed and compared to direct solutions of the von-Neumann equation of the statistical operator, showing excellent agreement.
[1] N. Baer et al., Eur. Phys. J. B 50 411 (2006).