An experimental physicist who coauthored a 2006 demonstration of an exciton-polariton condensate in a semiconductor microcavity. The experiment combined a large occupation of the lowest state with increasing temporal coherence and spatial coherence and emerging polarization, rather than relying on bright emission alone. The paper identifies Kasprzak's work on thermalization, condensation and polarization buildup.[ref]
Bose-Einstein condensation of exciton polaritons by J. Kasprzak and others. Abstract and author contributions: J.K.'s thermalization, condensation and polarization work
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