Towards r-space Bose-Einstein condensation of photonic crystal exciton polaritons - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




Towards r-space Bose-Einstein condensation of photonic crystal exciton polaritons - Condensed Matter > Mesoscale and Nanoscale Physics - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Coupled states of semiconductor quantum well QW excitons and photons in atwo dimensional 2D periodic lattice of microcavities are analyzedtheoretically, revealing allowed bands and forbidden gaps in the energyspectrum of exciton polaritons. Photonic crystal exciton polaritons havespatially uniform excitonic constituent set by flat QWs, but exhibit periodicBloch oscillations in the plane of QWs due to their photonic component. Theenvelope functions of photonic crystal exciton polaritons can be tailored viaeffective potential of a photonic crystal heterostructure, by usingquasi-periodic lattices of microcavities. Confined envelope function states oflower and upper polaritons and the Bose-Einstein condensation of lowerpolaritons are analyzed here in a photonic crystal heterostructure trap withharmonic oscillator potential. This concept is numerically illustrated onexample of CdTe-CdMgTe microcavities.



Autor: D. L. Boiko

Fuente: https://arxiv.org/







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