Abstract
The authors present results for the energy spectrum and the dynamical behavior of excitons in an asymmetric quantum dot molecule. Two main resonances are found by using parameters from GaAs-based systems. Excitonic and binding energies are calculated as functions of an external electric field. They fully explore the dynamics of the exciton, showing the time evolution of both the electron and hole components. The effect of the Coulomb interaction is found to be quite dramatic and responsible for considerably large resonance fields as well as for some underlying beatings found in the main oscillation pattern.
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