Influence of carrier-carrier and carrier-phonon correlations on optical absorption and gain in quantum-dot systems

Details Influence of carrier-carrier and carrier-phonon correlations on optical absorption and gain in quantum-dot systems Influence of carrier-carrier and carrier-phonon correlations on optical absorption and gain in quantum-dot systems

2005-09-21

arxiv.org/abs/cond-mat/0509543v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 10 figures

Scientific paper

10.1103/PhysRevB.73.085324

A microscopic theory is used to study the optical properties of semiconductor quantum dots. The dephasing of a coherent excitation and line-shifts of the interband transitions due to carrier-carrier Coulomb interaction and carrier-phonon interaction are determined from a quantum kinetic treatment of correlation processes. We investigate the density dependence of both mechanisms and clarify the importance of various dephasing channels involving the localized and delocalized states of the system.

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