Estimating the conditions for polariton condensation in organic thin-film microcavities

Abstract

We examine the possibility of observing Bose condensation of a confined two-dimensional polariton gas in an organic quantum well. We deduce a suitable parameterization of a model Hamiltonian based upon the cavity geometry, the biexciton binding energy, and similar spectroscopic and structural data. By converting the sum-over-states to a semiclassical integration over $d$-dimensional phase space, we show that while an ideal 2-D Bose gas will not undergo condensation, an interacting gas with the Bogoliubov dispersion $H(p)\approx sp$ close to $p=0$ will undergo Bose condensation at a given critical density and temperature. We show that $T_c/\sqrt{{\rho }_c}$ is sensitive to both the cavity geometry and to the biexciton binding energy. In particular, for strongly bound biexcitons, the non-linear interaction term appearing in the Gross-Pitaevskii equation becomes negative and the resulting ground state will be a localized soliton state rather than a delocalized Bose condensate.

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References in corpus (5)

• Bose-Einstein condensation of photons in an optical microcavity
• Collective coherence in planar semiconductor microcavities
• Polariton condensation with localised excitons and propagating photons
• Thermodynamics and Excitations of Condensed Polaritons in Disordered Microcavities
• Ideal Quantum Gases in D-dimensional Space and Power-law Potentials

Cited by in corpus (7)

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• Driving chemical reactions with polariton condensates
• Exact analytical solution for density matrix of a non-equilibrium polariton Bose-Einstein condensate
• A model for exciton-polaritons in uniaxial molecular crystals describing spatial dispersion, refraction and reflection
• Analytical framework for non-equilibrium phase transition to Bose--Einstein condensate
• Quantum symmetry breaking of exciton/polaritons in metal-nanorod plasmonic array
• Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime