Fluides Quantiques et Dispositifs à Polaritons

Abstract : Exciton polaritons are half-light half-matter quasi-particles which have been the subject of very exciting studies in recent years. They are given by the strong coupling between excitonic transitions in semiconductors and the electromagnetic field confined in a microcavity. In this Ph.D. thesis, two aspects of the corresponding physics have been theoretically studied : quantum optical device properties and quantum fluid behavior. Each part is compared with experimental results obtained by collaborating groups. First, we study the optical parametric oscillation regime in pillar microcavities, demonstrating the important role played by the dimensionality of the system. In a se- cond part, we investigate in detail the resonantly excited polariton superfluid regime. We have shown the hydrodynamic generation of vortices and dark solitons in such resonantly-driven superfluid. Finally, we present how the spin polariton properties can lead to a control of the effective potential landscape for the propagation of polaritons.
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Submitted on : Thursday, June 2, 2011 - 8:12:33 PM
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Simon Pigeon. Fluides Quantiques et Dispositifs à Polaritons. Physique mathématique [math-ph]. Université Paris-Diderot - Paris VII, 2011. Français. ⟨tel-00597945⟩

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