Regensburg 2004 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HL: Halbleiterphysik
HL 36: Quantenpunkte und -dr
ähte: Optische Eigenschaften I
HL 36.13: Vortrag
Donnerstag, 11. März 2004, 13:15–13:30, H17
Quantum coherences in semiconductor quantum dots — •Hans Christian Schneider1 and Weng W. Chow2 — 1Fachbereich Physik, TU Kaiserslautern, Postf. 3049, 67653 Kaiserslautern — 2Sandia National Laboratories, Albuquerque, NM 87185-0601, USA
Inversionless gain, electromagnetically induced transparency, refractive index enhancement and group-velocity reduction are studied for semiconductor quantum-dot structures under transient conditions. Substantial deviations from atomic quantum coherence phenomena exist because of many-body effects. Results on the influence of excitation-induced dephasing in a semiconductor quantum-dots will also be presented.