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HL: Halbleiterphysik

HL 40: Quantum dots and wires: Optical properties III

HL 40.7: Vortrag

Donnerstag, 30. März 2006, 12:30–12:45, POT 151

Microscopic Dynamics of two Coupled Quantum Dots — •Sandra Ritter, Kwang Jun Ahn, Juliane Danckwerts, and Andreas Knorr — Institut für Theoretische Physik,Nichtlineare Optik und Quantenelektronik,Technische Universität Berlin,Hardenbergstr. 36, 10623 Berlin, Germany

Within a density-matrix approach, we investigate the quantum kinetics of two Förster coupled semiconductor quantum dots. For the longitudinal Coulomb interaction, the Förster process leads to excitation energy transfer between the two quantum dots. Depending on resonant or nonresonant coupling, a qualitatively different behavior can be observed. Furthermore, we study the combined effects related to Förster transfer and dephasing processes.