Bose glass and superfluid phases of cavity polaritons.
We report the calculation of cavity exciton-polariton phase diagram including realistic structural disorder. With increasing density polaritons first undergo a quasiphase transition toward a Bose glass: the condensate is localized in at least one minimum of the disorder potential. A further increase of the density leads to a percolation process of the polariton fluid giving rise to a Kosterlitz-Thouless phase transition toward superfluidity. The spatial representation of the condensate wave function as well as the spectrum of elementary excitations are obtained from the Gross-Pitaevskii equation for all the phases.
Malpuech
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LASMEA, CNRS-Université Blaise Pascal, 24 Avenue des Landais, 63177 Aubière Cedex France.
Solnyshkov
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Ouerdane
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Glazov
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Shelykh
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