Dynamics of spin polarization in tilted polariton rings

We have observed the effect of pseudomagnetic field originating from the polaritonic analog of spin-orbit coupling [transverse electric and transverse magnetic (TE-TM) splitting] on a polariton condensate in a ring-shaped microcavity. The effect gives rise to a stable four-leaf pattern around the ring as seen from the linear polarization measurements of the condensate photoluminescence. This pattern is found to originate from the interplay of the cavity potential, energy relaxation, and TE-TM splitting in the ring. Our observations are compared to the dissipative one-dimensional spinor Gross-Pitaevskii equation with the TE-TM splitting energy, which shows good qualitative agreement.

Automated summary

The study focused on the effect of pseudomagnetic field on a polariton condensate in a ring-shaped microcavity, resulting in a stable four-leaf pattern. The pattern was found to originate from the interaction of cavity potential, energy relaxation, and TE-TM splitting. Comparisons with the dissipative one-dimensional spinor Gross-Pitaevskii equation with the TE-TM splitting energy showed good qualitative agreement.