Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential

Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a microcavity structure, and evidence has been reported of Bose-Einstein condensation of polaritons accumulated in this type of trap. We present her...

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Vydané v:Physical review. B, Condensed matter and materials physics Ročník 77; číslo 15
Hlavní autori: Berman, Oleg L., Lozovik, Yurii E., Snoke, David W.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States 16.04.2008
Predmet:
ANGULAR MOMENTUM
BOSE-EINSTEIN CONDENSATION
CONDENSATES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
EXCITONS
HARMONIC POTENTIAL
POLARONS
SUPERFLUIDITY
TRAPS
TWO-DIMENSIONAL CALCULATIONS
ISSN:1098-0121, 1550-235X
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Abstract Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a microcavity structure, and evidence has been reported of Bose-Einstein condensation of polaritons accumulated in this type of trap. We present here the theory of Bose-Einstein condensation (BEC) and superfluidity of the exciton polaritons in a harmonic potential trap. Along the way, we determine a general method for defining the superfluid fraction in a 2D trap, in terms of angular momentum representation. We show that in the continuum limit, as the trap becomes shallower, the superfluid fraction approaches the 2D Kosterlitz-Thouless limit, while the condensate fraction approaches zero, as expected.
AbstractList Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a microcavity structure, and evidence has been reported of Bose-Einstein condensation of polaritons accumulated in this type of trap. We present here the theory of Bose-Einstein condensation (BEC) and superfluidity of the exciton polaritons in a harmonic potential trap. Along the way, we determine a general method for defining the superfluid fraction in a 2D trap, in terms of angular momentum representation. We show that in the continuum limit, as the trap becomes shallower, the superfluid fraction approaches the 2D Kosterlitz-Thouless limit, while the condensate fraction approaches zero, as expected.
ArticleNumber 155317
Author Snoke, David W.
Berman, Oleg L.
Lozovik, Yurii E.
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Snippet Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a...
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SubjectTerms ANGULAR MOMENTUM
BOSE-EINSTEIN CONDENSATION
CONDENSATES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
EXCITONS
HARMONIC POTENTIAL
POLARONS
SUPERFLUIDITY
TRAPS
TWO-DIMENSIONAL CALCULATIONS
Title Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential
URI https://www.osti.gov/biblio/21143282
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