Polarized polariton condensates and coupled XY models

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Abstract

Microcavity polaritons, which at low temperatures can condense to a macroscopic coherent state, possess a polarization degree of freedom. This paper discusses the phase diagram of such a system, showing the boundaries between differently polarized condensates. The Bogoliubov approximation is shown to have problems in describing the transition between differently polarized phases; the Hartree-Fock-Popov approximation performs better, and compares well to exact results that can be used in the limit where the left- and right-circular polarization states decouple. The effects on the phase boundary of various symmetry breaking terms present in real microcavities are also considered.

Original languageEnglish
Pages (from-to)205316
Number of pages6
JournalPhysical Review. B, Condensed matter and materials physics
Volume78
Issue number20
DOIs
Publication statusPublished - Nov 2008

Keywords

  • BOSE-EINSTEIN CONDENSATION
  • EXCITON-POLARITONS
  • BEHAVIOR
  • SYSTEMS

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