Phase diagram of microcavity polariton condensates with a harmonic potential trap

Ting Wei Chen; Ming Dar Wei; Szu Cheng Cheng; Wen Feng Hsieh

doi:10.1016/j.ssc.2013.09.035

Phase diagram of microcavity polariton condensates with a harmonic potential trap

Ting Wei Chen, Ming Dar Wei, Szu Cheng Cheng, Wen Feng Hsieh

Department of Photonics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We theoretically explore the phase transition in inhomogeneous exciton-polariton condensates with variable pumping conditions. Through Bogoliubov excitations to the radial-symmetric solutions of complex Gross-Pitaevskii equation, we determine not only the bifurcation of stable and unstable modes by the sign of fluid compressibility but also two distinct stable modes which are characterized by the elementary excitations and the stability of singly quantized vortex. One state is the quasi-condensate BKT phase with Goldstone flat dispersion; the other state is the localized-BEC phase which exhibits linear-type dispersion and has an excitation energy gap at zero momentum.

Original language	English
Pages (from-to)	23-27
Number of pages	5
Journal	Solid State Communications
Volume	178
DOIs	https://doi.org/10.1016/j.ssc.2013.09.035
Publication status	Published - 2014

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/j.ssc.2013.09.035

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title = "Phase diagram of microcavity polariton condensates with a harmonic potential trap",

abstract = "We theoretically explore the phase transition in inhomogeneous exciton-polariton condensates with variable pumping conditions. Through Bogoliubov excitations to the radial-symmetric solutions of complex Gross-Pitaevskii equation, we determine not only the bifurcation of stable and unstable modes by the sign of fluid compressibility but also two distinct stable modes which are characterized by the elementary excitations and the stability of singly quantized vortex. One state is the quasi-condensate BKT phase with Goldstone flat dispersion; the other state is the localized-BEC phase which exhibits linear-type dispersion and has an excitation energy gap at zero momentum.",

author = "Chen, {Ting Wei} and Wei, {Ming Dar} and Cheng, {Szu Cheng} and Hsieh, {Wen Feng}",

note = "Funding Information: We acknowledge the financial support from the National Science Council (NSC) of the Republic of China under Contract no. NSC99-2112-M-034-002-MY3 and NSC99-2112-M-009-009-MY3 .",

year = "2014",

doi = "10.1016/j.ssc.2013.09.035",

language = "English",

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TY - JOUR

T1 - Phase diagram of microcavity polariton condensates with a harmonic potential trap

AU - Chen, Ting Wei

AU - Wei, Ming Dar

AU - Cheng, Szu Cheng

AU - Hsieh, Wen Feng

N1 - Funding Information: We acknowledge the financial support from the National Science Council (NSC) of the Republic of China under Contract no. NSC99-2112-M-034-002-MY3 and NSC99-2112-M-009-009-MY3 .

PY - 2014

Y1 - 2014

N2 - We theoretically explore the phase transition in inhomogeneous exciton-polariton condensates with variable pumping conditions. Through Bogoliubov excitations to the radial-symmetric solutions of complex Gross-Pitaevskii equation, we determine not only the bifurcation of stable and unstable modes by the sign of fluid compressibility but also two distinct stable modes which are characterized by the elementary excitations and the stability of singly quantized vortex. One state is the quasi-condensate BKT phase with Goldstone flat dispersion; the other state is the localized-BEC phase which exhibits linear-type dispersion and has an excitation energy gap at zero momentum.

AB - We theoretically explore the phase transition in inhomogeneous exciton-polariton condensates with variable pumping conditions. Through Bogoliubov excitations to the radial-symmetric solutions of complex Gross-Pitaevskii equation, we determine not only the bifurcation of stable and unstable modes by the sign of fluid compressibility but also two distinct stable modes which are characterized by the elementary excitations and the stability of singly quantized vortex. One state is the quasi-condensate BKT phase with Goldstone flat dispersion; the other state is the localized-BEC phase which exhibits linear-type dispersion and has an excitation energy gap at zero momentum.

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U2 - 10.1016/j.ssc.2013.09.035

DO - 10.1016/j.ssc.2013.09.035

M3 - Article

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SN - 0038-1098

VL - 178

SP - 23

EP - 27

JO - Solid State Communications

JF - Solid State Communications

ER -

Phase diagram of microcavity polariton condensates with a harmonic potential trap

Abstract

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