Mean-field dynamics of a quantum dot - microcavity system

Details Mean-field dynamics of a quantum dot - microcavity system Mean-field dynamics of a quantum dot - microcavity system

2004-09-20

arxiv.org/abs/cond-mat/0409525v1

Physica E 27 (2005) 427 - 438

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1016/j.physe.2005.01.005

Mean-field evolution equations for the exciton and photon populations and polarizations (Bloch-Lamb equations) are written and numerically solved in order to describe the dynamics of electronic states in a quantum dot coupled to the photon field of a microcavity. The equations account for phase space filling effects and Coulomb interactions among carriers, and include also (in a phenomenological way) incoherent pumping of the quantum dot, photon losses through the microcavity mirrors, and electron-hole population decay due to spontaneous emission of the dot. When the dot may support more than one electron-hole pair, asymptotic oscillatory states, with periods between 0.5 and 1.5 ps, are found almost for any values of the system parameters.

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