LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model
Other Condensed Matter
2009-11-11 v1
Abstract
It is widely believed that, due to its discrete nature, excitonic states in a quantum dot coupled to dispersionless LO phonons form everlasting mixed states (exciton polarons) showing no line broadening in the spectrum. This is indeed true if the model is restricted to a limited number of excitonic states in a quantum dot. We show, however, that extending the model to a large number of states results in LO phonon-induced spectral broadening and complete decoherence of the optical response.
Keywords
Cite
@article{arxiv.cond-mat/0605545,
title = {LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model},
author = {E. A. Muljarov and R. Zimmermann},
journal= {arXiv preprint arXiv:cond-mat/0605545},
year = {2009}
}
Comments
4 pages, 4 figures