  We keep track of the orbital degree of freedom of an exciton polariton
condensate, confined in an optical trap, and reveal the stochastic switching of
persistent annular polariton currents in the pulse-periodic excitation
regime.In an elliptic trap, the low-lying in energy polariton current states
are inherent in a two-petalled density distribution and swirling phase. In the
stochastic regime, the averaged over multiple excitation pulses density
distribution gets homogenised in the azimuthal direction, while the weighted
phase extracted from interference experiments experiences two compensating each
other jumps, when varying around the center of the trap. Breaking the
reciprocity of the system with a supplemental control optical pulse makes it
possible to switch the system from the stochastic regime to the deterministic
regime of an arbitrary polariton circulation.
