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Krügel, A. ; Axt, Vollrath Martin ; Kuhn, Tilmann ; Machnikowski, Paweł ; Vagov, Alexei:
The role of acoustic phonons for Rabi oscillations in semiconductor quantum dots.
In: Applied Physics B.
Bd. 81
(2005)
Heft 7
.
- S. 897-904.
ISSN 1432-0649
DOI: https://doi.org/10.1007/s00340-005-1984-1
Angaben zu Projekten
| Projektfinanzierung: |
Alexander von Humboldt-Stiftung Deutsche Forschungsgemeinschaft ESF within the EU network arrays of quantum dots and Josephson junctions, Polish KBN (Grant No.PB 2 P03B 08525) and Flemish science foundation. |
|---|
Abstract
The damping of Rabi oscillations in quantum dots as well as the renormalization of the carrier-light coupling, due to the interaction with longitudinal acoustic phonons are studied as a function of temperature and laser pulse parameters. Numerical results are obtained by using a correlation expansion within the density matrix theory. The observed features like a non-monotonous dependence of the damping on the pulse duration are characteristic for the strongly non-Markovian nature of the phonon coupling in these systems. The results can be well interpreted on the level of a perturbation expansion in the carrier-phonon interaction.