Quantum degeneracy of microcavity polaritons

Details Quantum degeneracy of microcavity polaritons Quantum degeneracy of microcavity polaritons

2005-01-11

arxiv.org/abs/cond-mat/0501260v2

Physical Review Letters 96 (2006) 176401

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevLett.96.176401

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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