Cavity polaritons: Classical behaviour of a quantum parametric oscillator
Abstract
We address theoretically the optical parametric oscillator based on semiconductor cavity exciton-polaritons under a pulsed excitation. A "hyperspin" formalism is developed which allows, in the case of large number of polaritons, to reduce quantum dynamics of the parametric oscillator wavefunction to the Liouville equation for the classical probability distribution. Implications for the statistics of polariton ensembles are analyzed.
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