Behaviour of Polariton in a Simple Model

Behaviour of a simple model polariton system is restudied. The distribution of phonons in polariton never is sub-Poisson given by computation of the thermal counterpart of the Q parameter and the matrix m⁽³⁾. The polariton complex as a whole shows non-classical behaviour below a threshold temperature, which depends on the photon-phonon coupling strength, when the distribution of phonons is always classical at any temperature.