arXiv 0806.16912008-06-10quant-phcond-mat.other

Stimulated scattering and lasing of intersubband cavity polaritons

Simone De Liberato, Cristiano Ciuti

发表信息：: Physical Review Letters 102 (2009) 136403
DOI：: 10.1103/PhysRevLett.102.136403

英文摘要：

We present a microscopic theory describing the stimulated scattering of intersubband polariton excitations in a microcavity-embedded two-dimensional electron gas. In particular, we consider the polariton scattering induced by the spontaneous emission of optical phonons. Our theory demonstrates the possibility of final-state stimulation for the scattering of such composite excitations, accounting for the deviations from perfect bosonicity occurring at high excitation densities. By using realistic parameters for a GaAs semiconductor system, we predict how to achieve a quantum degenerate regime, leading to ultralow threshold lasing without population inversion.

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