Localization of anisotropic exciton polariton condensates in perovskite microcavities

Abstract

Perovskite materials such as CsPbBr3 attract intensive attention due to excellent photonic properties. Especially, the exciton polariton condensate based on perovskite CsPbBr3 has been realized at room temperature. In this work, we observe the XY splitting of exciton polaritons localized in disorder induced potential traps in a CsPbBr3 microcavity due to the anisotropy of the perovskite and polariton condensation onto the horizontally and vertically linear polarized modes. In addition, the refractive index of the microcavity can be modified by filling liquid crystal molecules into the cavity layer, which can modify the XY splitting of localized polaritons. Our results pave the way to study the nontrivial band structure based on the XY splitting of the localized polariton condensate in microcavities.