Exciton-polaritons

Exciton-polaritons are a type of polariton quasiparticle arising from strong coupling of excitons (bulk or quantum well) and photons (for example, quantized in an optical microcavity). They occur in semiconductor microcavities. Cavity exciton-polaritons are characterized by a non-parabolic dispersion, a light effective mass and a capacity to interact with each other and with the environment (including phonons, which provide thermalization). Exciton-polaritons are composite bosons and can be observed to form Bose-Einstein condensates.^[1]

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