Carrier relaxation and quantum decoherence of excited states in self-assembled quantum dots

H. Htoon, D. Kulik, O. Baklenov, T. Takagahara, A. L. Holmes, C. K. Shih

研究成果: Article

72 引用 (Scopus)

抜粋

We report systematic measurements of photoluminescence excitation spectra and dephasing times (T2's) on various excited states of hundreds of individual quantum dots (QDs). From the variation of T2's with the energy separation between excited states and the ground state (Erel), we identified two distinct regions of Erel where LO phonon emission and hole relaxation via LA phonon emission play as dominat dephasing mechanisms. We also found a clear evidence of significantly slow energy relaxation in the Erel range where these phonon emission processes are suppressed due to the reduction of interaction phase space.

元の言語English
記事番号241303
ページ(範囲)2413031-2413034
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
63
発行部数24
出版物ステータスPublished - 2001 1 1
外部発表Yes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • これを引用

    Htoon, H., Kulik, D., Baklenov, O., Takagahara, T., Holmes, A. L., & Shih, C. K. (2001). Carrier relaxation and quantum decoherence of excited states in self-assembled quantum dots. Physical Review B - Condensed Matter and Materials Physics, 63(24), 2413031-2413034. [241303].