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Article Dans Une Revue Physical Review Research Année : 2020

Galilean boosts and superfluidity of resonantly driven polariton fluids in the presence of an incoherent reservoir

Résumé

We theoretically investigate how the presence of a reservoir of incoherent excitations affects the superfluidity properties of resonantly driven polariton fluids. While in the absence of reservoir the two cases of a defect moving in a fluid at rest and of a fluid flowing against a static defect are linked by a formal Galilean transformation, here the reservoir defines a privileged reference frame attached to the semiconductor structure and causes markedly different features between the two settings. The consequences on the critical velocity for superfluidity are highlighted and compared to experiments in resonantly driven excitons polaritons.

Dates et versions

hal-02991721 , version 1 (06-11-2020)

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Ivan Amelio, Anna Minguzzi, Maxime Richard, Iacopo Carusotto. Galilean boosts and superfluidity of resonantly driven polariton fluids in the presence of an incoherent reservoir. Physical Review Research, 2020, 2 (2), pp.023158. ⟨10.1103/PhysRevResearch.2.023158⟩. ⟨hal-02991721⟩
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