Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-03-16
Phys. Rev. B 73, 035315 (2006)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 pages, 1 figure
Scientific paper
10.1103/PhysRevB.73.035315
It is shown theoretically that Bose condensation of spin-degenerated exciton-polaritons results in spontaneous buildup of the linear polarization in emission spectra of semiconductor microcavities. The linear polarization degree is a good order parameter for the polariton Bose condensation. If spin-degeneracy is lifted, an elliptically polarized light is emitted by the polariton condensate. The main axis of the ellipse rotates in time due to self-induced Larmor precession of the polariton condensate pseudospin. The polarization decay time is governed by the dephasing induced by the polariton-polariton interaction and strongly depends on the statistics of the condensed state.
Kavokin Alexey V.
Laussy Fabrice P.
Malpuech Guillaume
Shelykh Ivan
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