Cascade optical excitation of an artificial exciton molecule in a coupled quantum dot

Keishiro Goshima, Kazuhiro Komori, Takeyoshi Sugaya, Toshihide Takagahara

研究成果: Conference article査読

抄録

We investigated the formation dynamics of the artificial exciton molecule state, which consists of two different excitons confined in each quantum dot of a pair of quantum dots, namely a coupled quantum dot (CQD). By the selective optical excitation of the inherent energy states of two different excitons using two color continuous wave (CW) and pulsed lasers, we successively created Xb excitons and an artificial exciton molecule state, and monitored the photoluminescence, namely the population, of the artificial exciton molecule states. By employing the power dependence of the two colors and the excitation energy dependence, we succeeded in controlling the cascade optical excitation of an artificial exciton molecule.

本文言語English
ページ(範囲)343-346
ページ数4
ジャーナルPhysica Status Solidi (C) Current Topics in Solid State Physics
5
1
DOI
出版ステータスPublished - 2008
外部発表はい
イベント15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan
継続期間: 2007 7月 232007 7月 27

ASJC Scopus subject areas

  • 凝縮系物理学

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