Exciton-polaritons

Exciton-polaritons are a type of polariton quasiparticle arising from strong coupling of excitons (bulk or quantum well) and photons.[1] Especially strong coupling occurs in semiconductor microcavities where polaritons can be quantized. Cavity exciton-polaritons are characterized by a non-parabolic dispersion, a light effective mass and a capacity to interact with each other and with the environment (including phonons, which provide thermalization). Exciton-polaritons are composite bosons and can be observed to form Bose-Einstein condensates.[2]

References

  1. ↑ S.I. Pekar, Theory of electromagnetic waves in a crystal with excitons, Journal of Physics and Chemistry of Solids, 5, 11-22 (1958)
  2. ↑ "Exciton–polariton condensates". NATURE PHYSICS. 31 October 2014. arXiv:1411.6822. Bibcode:2014NatPh..10..803B. doi:10.1038/nphys3143.
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