Role of Coulomb correlations for femtosecond pump-probe signals obtained from a single quantum dot

Huneke, Jan; D'Amico, Irene; Machnikowski, Paweł; Thomay, Tim; Bratschitsch, Rudolf; Leitenstorfer, Alfred; Kuhn, Tilmann

Role of Coulomb correlations for femtosecond pump-probe signals obtained from a single quantum dot

Dateien

PhysRevB.84.115320.pdfGröße: 954.27 KBDownloads: 289

Datum

2011

Autor:innen

Huneke, Jan

D'Amico, Irene

Machnikowski, Paweł

Thomay, Tim

Bratschitsch, Rudolf

Leitenstorfer, Alfred

Kuhn, Tilmann

Publikationstyp

Zeitschriftenartikel

unikn.publication.listelement.citation.prefix.version.undefined

Physical Review B. 2011, 84(11). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.84.115320

Zusammenfassung

We present a theoretical analysis of femtosecond pump-probe experiments performed on a single negatively charged quantum dot. The influence of Coulomb-correlation effects as well as carrier relaxation on transient transmission change signals is investigated. Our model describes ultrafast disappearance of the fundamental trion absorption due to instantaneous Coulomb renormalizations and a delayed onset of gain at the same frequency, as found in the measurements. Going beyond previous experimental information, we predict that after spin-conserving carrier relaxation, new optical transitions exhibiting either gain or absorption should emerge that build up on a picosecond timescale. The time dependence of these new transitions provides insight into details of the carrier relaxation processes.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

HUNEKE, Jan, Irene D'AMICO, Paweł MACHNIKOWSKI, Tim THOMAY, Rudolf BRATSCHITSCH, Alfred LEITENSTORFER, Tilmann KUHN, 2011. Role of Coulomb correlations for femtosecond pump-probe signals obtained from a single quantum dot. In: Physical Review B. 2011, 84(11). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.84.115320

BibTex

@article{Huneke2011Coulo-19187,
  year={2011},
  doi={10.1103/PhysRevB.84.115320},
  title={Role of Coulomb correlations for femtosecond pump-probe signals obtained from a single quantum dot},
  number={11},
  volume={84},
  issn={1098-0121},
  journal={Physical Review B},
  author={Huneke, Jan and D'Amico, Irene and Machnikowski, Paweł and Thomay, Tim and Bratschitsch, Rudolf and Leitenstorfer, Alfred and Kuhn, Tilmann}
}

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