Phonon-induced exciton dephasing in quantum dot molecules

E. A. Muljarov, T. Takagahara, R. Zimmermann

研究成果: Article査読

59 被引用数 (Scopus)

抄録

A new microscopic approach to the optical transitions in quantum dots and quantum dot molecules, which accounts for both diagonal and nondiagonal exciton-phonon interaction, is developed. The cumulant expansion of the linear polarization is generalized to a multilevel system and is applied to calculation of the full time dependence of the polarization and the absorption spectrum. In particular, the broadening of zero-phonon lines is evaluated directly and discussed in terms of real and virtual phonon-assisted transitions. The influence of Coulomb interaction, tunneling, and structural asymmetry on the exciton dephasing in quantum dot molecules is analyzed.

本文言語English
論文番号177405
ジャーナルPhysical Review Letters
95
17
DOI
出版ステータスPublished - 2005 10 21
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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