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Title: Interaction-enhanced flow of a polariton superfluid current in a ring
Author: Gallemí Camacho, Albert
Guilleumas, Montserrat
Richaud, M.
Minguzzi, A.
Keywords: Quasipartícules (Física)
Teoria quàntica
Quasiparticles (Physics)
Quantum theory
Issue Date: 5-Sep-2018
Publisher: American Physical Society
Abstract: We study the quantum hydrodynamical features of exciton polaritons flowing circularly in a ring-shaped geometry. We consider a resonant-excitation scheme in which the spinor polariton fluid is set into motion in both components by spin-to-orbital angular momentum conversion. We show that this scheme allows us to control the winding number of the fluid and to create two circulating states differing by two units of the angular momentum. We then consider the effect of a disorder potential, which is always present in realistic nanostructures. We discuss how a smooth disorder can be efficiently screened by the polariton-polariton interactions, yielding a signature of polariton superfluidity. This effect is reminiscent of supercurrent in a superconducting loop
Note: Reproducció del document publicat a:
It is part of: Physical Review B, 2018, vol. 98, p. 104502
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ISSN: 2469-9950
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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