LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model

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.

4 pages, 4 figures

References in corpus (1)

• Change of decoherence scenario and appearance of localization due to reservoir anharmonicity

Cited by in corpus (3)

• Influence of electron-acoustic phonon scattering on off-resonant cavity feeding within a strongly coupled quantum-dot cavity system
• Zero-phonon linewidth and phonon satellites in the optical absorption of nanowire-based quantum dots
• Zero-Phonon Line Broadening and Satellite Peaks in Nanowire Quantum Dots: The Role of Piezoelectric Coupling