Spin polarization of exciton-polariton condensate in a photonic synthetic effective magnetic field

Abstract

The authors investigate here the spin polarization of localized exciton-polariton condensates in CdTe-based microcavities doped with magnetic ions. They demonstrate that an effective magnetic field originating from the photonic potential landscape leads to the formation of elliptically polarized condensate. The degree of spin polarization of the condensate depends on the excitation power and polarization of the laser. Based on the magnetic field behavior of the condensate in the presence of magnetic ions, they estimate the polariton-polariton interaction strength in a CdTe system.