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Solid-state physics

A polariton laser

Polaritons — particles comprising both light and matter — can form a coherent state, just as light and matter can individually. This fact has now been exploited to make the first room-temperature polariton laser.

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Butov, L. A polariton laser. Nature 447, 540–541 (2007). https://doi.org/10.1038/447540a

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