Long range correlations in a 97% excitonic one-dimensional polariton condensate

Abstract

We report on the realization of an out-of-equilibrium polariton condensate under pulsed excitation in a one-dimensional geometry. We observe macroscopic occupation of a polaritonic mode with only 3% photonic fraction, and a nature strikingly close to that of a bare exciton condensate. With the help of this tiny photonic fraction, the condensate is found to display first-order coherence over distances as large as 10 microns. Based on a driven-dissipative mean field model, we find that the correlations length is limited by the effects of a shallow disorder under non-equilibrium conditions.

5 pages, 3 figures

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• Optical amplifier based on guided polaritons in GaN and ZnO
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• Cavity Polariton Condensate in a Disordered Environment
• Thermal decoherence of a nonequilibrium polariton fluid
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• Interplay between tightly focused excitation and ballistic propagation of polariton condensates in a ZnO microcavity