A polariton laser is a type of laser that operates based on the principles of quantum mechanics, specifically using exciton-polaritons. These are quasi-particles that arise from the coupling of excitons (bound states of electrons and holes) with photons in a microcavity. Unlike traditional lasers, which rely on population inversion among electronic states, polariton lasers utilize the Bose-Einstein condensation of polaritons to achieve lasing.
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