Dynamics of a quantum polariton vortex: Low excitation scenario

Vorticity has been traditionally investigated within the frame of many-body phenomena; under the mean-field or coherent approaches. In the present work, we demonstrate that the fully quantized picture describes richer dynamics at the quantum coupling limit, where two systems exchange an indivisible excitation. The quantum correlations intrinsic to our formalism, account for the emergence of a family of trajectories that differs from the circular paths known in macroscopic vorticity phenomena. This result enables the establishment of a criterion to differentiate the behavior at the edge between the quantum and classical polariton vortex dynamics.