Quantum fluctuations and stability of vortex lattices in a nonresonantly pumped exciton-polariton condensate

Ting Wei Chen; Shih Da Jheng; Tsin-Fu Jiang; Szu Cheng Cheng

doi:10.1088/1361-648X/aa51b4

Quantum fluctuations and stability of vortex lattices in a nonresonantly pumped exciton-polariton condensate

Ting Wei Chen, Shih Da Jheng, Tsin-Fu Jiang, Szu Cheng Cheng^*

^*Corresponding author for this work

Institute of Physics

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

2 Scopus citations

Abstract

The dynamics of an exciton-polariton condensate (EPC) subject to harmonic confinement can cause spontaneously formed vortices to arrange into a triangular vortex lattice. The stability of such a spontaneously formed vortex lattice is still unknown. We investigate the quantum fluctuations of vortex lattices in a rapidly rotating EPC with a rotation frequency close to the harmonic trap. In such a large condensate, we find that a vortex lattice with a triangular structure is stable, whereas one with a square structure becomes unstable. This result indicates that a driven-dissipative vortex array with strong quantum fluctuations can occur in an EPC.

Original language	English
Article number	085403
Journal	Journal of Physics Condensed Matter
Volume	29
Issue number	8
DOIs	https://doi.org/10.1088/1361-648X/aa51b4
State	Published - 1 Mar 2017

Keywords

condensate
exciton-polariton
vortex lattice

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title = "Quantum fluctuations and stability of vortex lattices in a nonresonantly pumped exciton-polariton condensate",

abstract = "The dynamics of an exciton-polariton condensate (EPC) subject to harmonic confinement can cause spontaneously formed vortices to arrange into a triangular vortex lattice. The stability of such a spontaneously formed vortex lattice is still unknown. We investigate the quantum fluctuations of vortex lattices in a rapidly rotating EPC with a rotation frequency close to the harmonic trap. In such a large condensate, we find that a vortex lattice with a triangular structure is stable, whereas one with a square structure becomes unstable. This result indicates that a driven-dissipative vortex array with strong quantum fluctuations can occur in an EPC.",

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author = "Chen, {Ting Wei} and Jheng, {Shih Da} and Tsin-Fu Jiang and Cheng, {Szu Cheng}",

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T1 - Quantum fluctuations and stability of vortex lattices in a nonresonantly pumped exciton-polariton condensate

AU - Chen, Ting Wei

AU - Jheng, Shih Da

AU - Jiang, Tsin-Fu

AU - Cheng, Szu Cheng

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The dynamics of an exciton-polariton condensate (EPC) subject to harmonic confinement can cause spontaneously formed vortices to arrange into a triangular vortex lattice. The stability of such a spontaneously formed vortex lattice is still unknown. We investigate the quantum fluctuations of vortex lattices in a rapidly rotating EPC with a rotation frequency close to the harmonic trap. In such a large condensate, we find that a vortex lattice with a triangular structure is stable, whereas one with a square structure becomes unstable. This result indicates that a driven-dissipative vortex array with strong quantum fluctuations can occur in an EPC.

AB - The dynamics of an exciton-polariton condensate (EPC) subject to harmonic confinement can cause spontaneously formed vortices to arrange into a triangular vortex lattice. The stability of such a spontaneously formed vortex lattice is still unknown. We investigate the quantum fluctuations of vortex lattices in a rapidly rotating EPC with a rotation frequency close to the harmonic trap. In such a large condensate, we find that a vortex lattice with a triangular structure is stable, whereas one with a square structure becomes unstable. This result indicates that a driven-dissipative vortex array with strong quantum fluctuations can occur in an EPC.

KW - condensate

KW - exciton-polariton

KW - vortex lattice

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

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