Data from: Room-temperature spinor condensate in halide perovskite microcavity

A deeper understanding of room temperature polariton condensed phases is
essential for advancing quantum applications. Spin degrees of freedom
inherent in polariton particles manifest themselves in the form of spinor
condensation, which has been demonstrated only at cryogenic temperatures
in the past. Herein we demonstrate room-temperature spinor polariton
condensation in a lead-halide perovskite microcavity under non-resonant
optical excitation. The crystalline anisotropy of the perovskite induces a
linear polarization splitting of the lower polariton modes, and above the
condensation threshold, nonlinear polariton-polariton interactions drive
the formation of elliptically polarized condensates. The condensation
dynamics, reproduced by a spin-dependent Gross-Pitaevskii model, highlight
that the strong polariton-polariton interactions in CsPbBr3 enable an
exceptionally low threshold for spinor condensation, despite significant
linear polarization splitting. Our findings pave the way for all-optical
control of polariton spin states at room temperature, opening a path
toward scalable polaritonic quantum devices.