Anomalous time evolution of exciton coherence in highly-stacked InAs quantum dots

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K. Ema, M. Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We perform a transient four-wave mixing experiment to investigate the initial dynamics of the time evolution of exciton coherence in highly-stacked InAs quantum dots. For short time delays, an oscillatory behavior with a period of 31 ps is observed only in the weak excitation regime. The excitation density and polarization dependence of this oscillation cannot be explained by the usual quantum beat phenomena such as biexcitonic and bright excitonic beats.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages973-974
Number of pages2
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: 2006 Jul 242006 Jul 28

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other28th International Conference on the Physics of Semiconductors, ICPS 2006
CountryAustria
CityVienna
Period06/7/2406/7/28

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Keywords

  • Coherent spectroscopy
  • Quantum beat
  • Quantum dots
  • Transient four-wave mixing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ishi-Hayase, J., Akahane, K., Yamamoto, N., Kujiraoka, M., Ema, K., & Sasaki, M. (2007). Anomalous time evolution of exciton coherence in highly-stacked InAs quantum dots. In Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B (pp. 973-974). (AIP Conference Proceedings; Vol. 893). https://doi.org/10.1063/1.2730219