Quantum Effect of the Exciton Intensity in a Semiconductor Microcavity

We have studied the collapses and revivals of the exciton intensity in a semiconductor microcavity under the resonant case. It is found that, when the excitons are initially in the number state, the exciton intensity exhibits the periodic oscillation if the dissipation parameters equal zero, but if there exists the dissipation, the damped oscillation appears. Whether there exists the dissipation or does not, the width of oscillation decreases with the increment of the atom numbers. When the excitons are initially in the coherent state, the width of the oscillation decreases with the increment of the dissipation.