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HL: Halbleiterphysik

HL 50: Poster II

HL 50.85: Poster

Donnerstag, 30. März 2006, 16:30–19:00, P3

Theory of Optical Dephasing in Semiconductor Quantum Dots — •Carsten Weber, Matthias Hirtschulz, and Andreas Knorr — Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

Within a density matrix approach, the nonlinear quantum kinetic dynamics of semiconductor quantum dots is investigated. We consider different dephasing mechanisms, e.g. electron-phonon interaction and the interaction with the underlying wetting layer, in order to describe in a realistic manner the damping mechanisms. Non-Markovian dynamics as well as scattering processes lead to a damping of the Rabi oscillations, which can be compared to single-quantum dot experiments.