Exciton dephasing in quantum dots: Coupling to LO phonons via excited states

Abstract

We have found a novel mechanism of spectral broadening and dephasing in quantum dots (QDs) due to the coupling to longitudinal-optical (LO) phonons. In theory, this mechanism comes into play only if the complete manifold of exciton levels (including those in the wetting-layer continuum) is taken into account. We demonstrate this nontrivial dephasing in different types of QDs, using the exactly solvable quadratic coupling model, here generalized to an arbitrary number of excitonic states.

OECS10 contribution paper

References in corpus (4)

• Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons
• LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model
• Optical absorption in quantum dots: Coupling to longitudinal optical phonons treated exactly
• Comment on "Dephasing Times in Quantum Dots due to Elastic LO Phonon-Carrier Collisions"

Cited by in corpus (1)

• Formation dynamics of an entangled photon pair -- a temperature dependent analysis