Observation of an unusual temperature dependence of the initial decoherence time in quantum dots

Axt, V. M., Kuhn, T., Vagov, A., Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314, Langbein, Wolfgang ORCID: https://orcid.org/0000-0001-9786-1023 and Woggon, U. 2005. Observation of an unusual temperature dependence of the initial decoherence time in quantum dots. Physica Status Solidi C: Current Topics in Solid State Physics 2 (8) , pp. 3167-3170. 10.1002/pssc.200460779

Full text not available from this repository.

Abstract

We report on four-wave-mixing experiments in self-assembled InAs/GaAs quantum dots and compare with a theory that accounts for the pure-dephasing induced by acoustic phonons. The measurements demonstrate an unusual non-monotonous temperature dependence of the initial decoherence time in full agreement with previous theoretical predictions made on the basis of a model that concentrates on the lowest electronic states. For samples exhibiting strong electronic confinement this model even yields a good quantitative agreement with the experiments while for less confined samples there are some systematic deviations although many qualitative features are still well reproduced by the model.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Publisher:	Wiley
ISSN:	1610-1634
Last Modified:	10 Jul 2024 19:17
URI:	https://orca.cardiff.ac.uk/id/eprint/48808

Actions (repository staff only)

Edit Item