A new method for coherent control in a quantum dot ensemble

M. Kujiraoka, Junko Hayase, K. Akahane, N. Yamamoto, K. Ema, M. Sasaki

Research output: Contribution to journalArticle

Abstract

We propose a new method for controlling macroscopic coherent phenomena by taking advantage of the characteristics of quantum dot (QD) ensembles. We demonstrate that the ensemble average of Rabi oscillations of excitonic polarization can be changed drastically by selecting the spatial distributions of input electric fields. We show that the changes in ensemble averages are caused by polarization interference; the results of our previous experiments agree with our calculations. This result demonstrates that a macroscopic coherent response from a QD ensemble can be controlled by changing the spatial distribution of excitation beams.

Original languageEnglish
Article number012125
JournalJournal of Physics: Conference Series
Volume193
DOIs
Publication statusPublished - 2009
Externally publishedYes

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spatial distribution
quantum dots
polarization
interference
oscillations
electric fields
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

A new method for coherent control in a quantum dot ensemble. / Kujiraoka, M.; Hayase, Junko; Akahane, K.; Yamamoto, N.; Ema, K.; Sasaki, M.

In: Journal of Physics: Conference Series, Vol. 193, 012125, 2009.

Research output: Contribution to journalArticle

Kujiraoka, M. ; Hayase, Junko ; Akahane, K. ; Yamamoto, N. ; Ema, K. ; Sasaki, M. / A new method for coherent control in a quantum dot ensemble. In: Journal of Physics: Conference Series. 2009 ; Vol. 193.
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