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Quantum degeneracy of microcavity polaritons

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 نشر من قبل Jean-Philippe Karr
 تاريخ النشر 2005
  مجال البحث فيزياء
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 تأليف Augustin Baas




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We investigate experimentally one of the main features of a quantum fluid constituted by exciton polaritons in a semiconductor microcavity, that is quantum degeneracy of a macroscopic fraction of the particles. We show that resonant pumping allows to create a macroscopic population of polaritons in one quantum state. Furthermore we demonstrate that parametric polariton scattering results in the transfer of a macroscopic population of polariton from one single quantum state into another one. Finally we briefly outline a simple method which provides direct evidence of the first-order spatial coherence of the transferred population.



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