Superfluidity of a nonequilibrium Bose-Einstein condensate of polaritons

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.81.054508· OSTI ID:21366674

Wouters, Michiel; Savona, Vincenzo ^[1]

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1. Insitute of Theoretical Physics, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

We study theoretically superfluidity in a driven-dissipative Bose gas out of thermal equilibrium, and discuss the relation with conventional superfluids. We show how the superfluid behavior is characterized by a dramatic increase in the lifetime of a quantized vortex and point out the influence of the spatial geometry of the condensate. We apply our study to a condensate of polaritons in a semiconductor microcavity, whose properties can be directly inferred from optical spectroscopy. We propose three different experimental schemes to measure the vorticity of the polariton condensate.

• OSTI ID: 21366674
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevB.81.054508; (c) 2010 The American Physical Society; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSE-EINSTEIN CONDENSATION
BOSE-EINSTEIN GAS
CAVITIES
CONDENSATES
LIFETIME
POLARONS
SEMICONDUCTOR MATERIALS
SIMULATION
SPECTROSCOPY
SUPERFLUIDITY
THERMAL EQUILIBRIUM
VORTICES
EQUILIBRIUM
MATERIALS
QUASI PARTICLES