Unconventional Berezinskii-Kosterlitz-Thouless Transition in the Multicomponent Polariton System
Unconventional Berezinskii-Kosterlitz-Thouless Transition in the Multicomponent Polariton System
We study a four-component polariton system in the optical parametric oscillator regime consisting of exciton, photon, signal, and idler modes across the Berezinskii-Kosterlitz-Thouless (BKT) transition. We show that all four components share the same BKT critical point, and algebraic decay of spatial coherence with the same critical exponent. However, while …