Fig. 2: Polariton condensation signatures.
From: Quantum coherence of a long-lifetime exciton-polariton condensate
a PL intensity (black circles) and linewith (red diamonds) as a function of P/Pth. b Corresponding blueshift extracted from the momentum-resolved emissions at k = 0. LPB denotes spectra where the polariton system only occupies the ground state of the lower polariton branch. BEC denotes spectra where the system displays a polariton condensate state.
