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

Junko 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 publicationAIP Conference Proceedings
Pages973-974
Number of pages2
Volume893
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: 2006 Jul 242006 Jul 28

Other

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

Fingerprint

synchronism
quantum dots
excitons
four-wave mixing
excitation
time lag
oscillations
polarization

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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 AIP Conference Proceedings (Vol. 893, pp. 973-974) https://doi.org/10.1063/1.2730219

Anomalous time evolution of exciton coherence in highly-stacked InAs quantum dots. / Hayase, Junko; Akahane, K.; Yamamoto, N.; Kujiraoka, M.; Ema, K.; Sasaki, M.

AIP Conference Proceedings. Vol. 893 2007. p. 973-974.

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

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 AIP Conference Proceedings. vol. 893, pp. 973-974, 28th International Conference on the Physics of Semiconductors, ICPS 2006, Vienna, Austria, 06/7/24. https://doi.org/10.1063/1.2730219
Hayase J, Akahane K, Yamamoto N, Kujiraoka M, Ema K, Sasaki M. Anomalous time evolution of exciton coherence in highly-stacked InAs quantum dots. In AIP Conference Proceedings. Vol. 893. 2007. p. 973-974 https://doi.org/10.1063/1.2730219
Hayase, Junko ; Akahane, K. ; Yamamoto, N. ; Kujiraoka, M. ; Ema, K. ; Sasaki, M. / Anomalous time evolution of exciton coherence in highly-stacked InAs quantum dots. AIP Conference Proceedings. Vol. 893 2007. pp. 973-974
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