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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Article number085403
JournalJournal of Physics Condensed Matter
Volume29
Issue number8
DOIs
StatePublished - 1 Mar 2017

Keywords

  • condensate
  • exciton-polariton
  • vortex lattice

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