Abstract
Room temperature polariton state in microcavity of lead-halide perovskite gathers much attention to study their fundamental quantum physics. In this study, we investigate the polarization characteristics of polaritonic Bardeen-Cooper-Schrieffer (BCS) state in CsPbBr3 microcavities. The polariton mode shows a large birefringence due to the crystallographic anisotropy. At a high excitation density, we observed condensation switching phenomenon between the two polarized polariton modes.
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