Magnetic field effect on polarization and dispersion of exciton-polaritons in planar microcavities

Details Magnetic field effect on polarization and dispersion of exciton-polaritons in planar microcavities Magnetic field effect on polarization and dispersion of exciton-polaritons in planar microcavities

2008-06-23

arxiv.org/abs/0806.3647v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 pages, 5 figures

Scientific paper

10.1103/PhysRevB.78.165323

The non-local dielectric response theory is extended to describe oblique reflection of light from quantum wells subjected to the magnetic field. This allows us to calculate the dispersion and polarization of the exciton-polariton modes in semiconductor microcavities in the presence of a magnetic field normal to the plane of the structure. We show that due to the interplay between the exciton Zeeman splitting and TE-TM splitting of the photon modes, four polariton dispersion branches are formed with a polarization gradually changing from circular in the exciton-like part to linear in the photon-like part of each branch. Faraday rotation in quantum microcavities is shown to be strongly enhanced as compared with the rotation in quantum wells.

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