Phonon-induced exciton dephasing in quantum dot molecules

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

研究成果: Article

59 引用 (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.

元の言語English
記事番号177405
ジャーナルPhysical Review Letters
95
発行部数17
DOI
出版物ステータスPublished - 2005 10 21
外部発表Yes

Fingerprint

quantum dots
excitons
molecules
linear polarization
optical transition
time dependence
asymmetry
interactions
absorption spectra
expansion
polarization

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Phonon-induced exciton dephasing in quantum dot molecules. / Muljarov, E. A.; Takagahara, Toshihide; Zimmermann, R.

:: Physical Review Letters, 巻 95, 番号 17, 177405, 21.10.2005.

研究成果: Article

@article{580352d3f69b436da1c3b9e0493541e2,
title = "Phonon-induced exciton dephasing in quantum dot molecules",
abstract = "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.",
author = "Muljarov, {E. A.} and Toshihide Takagahara and R. Zimmermann",
year = "2005",
month = "10",
day = "21",
doi = "10.1103/PhysRevLett.95.177405",
language = "English",
volume = "95",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",

}

TY - JOUR

T1 - Phonon-induced exciton dephasing in quantum dot molecules

AU - Muljarov, E. A.

AU - Takagahara, Toshihide

AU - Zimmermann, R.

PY - 2005/10/21

Y1 - 2005/10/21

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=28944442737&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=28944442737&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.95.177405

DO - 10.1103/PhysRevLett.95.177405

M3 - Article

AN - SCOPUS:28944442737

VL - 95

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 177405

ER -