Abstract

We extend the exciton population equations of a two-level quantumdot system with weak excitation to the ones with strong excitations, in which,the phonon-induced intensity-dependent dephasing time and decay rate areinvolved. The straightforward calculated populations from the modifiedpopulation equations demonstrate the damping behavior of Rabi oscillation asthe external field increasing. The effect of the intensity-dependentdephasing time and the intensity-dependent decay rate are also discussed.

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