Nonlinear effects in spin relaxation of cavity polaritons

Details Nonlinear effects in spin relaxation of cavity polaritons Nonlinear effects in spin relaxation of cavity polaritons

2006-10-02

arxiv.org/abs/cond-mat/0610044v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

21 pages, 4 figures, accepted to Semiconductors

Scientific paper

10.1134/S1063782607090138

We present the general kinetic formalism for the description of spin and energy relaxation of the cavity polaritons in the framework of the Born-Markov approximation. All essential mechanisms of polaritons redistribution in reciprocal space together with final state bosonic stimulation are taken into account, from our point of view. The developed theory is applied to describe our experimental results on the polarization dynamics obtained in the polariton parametric amplifier geometry (pumping at so-called magic angle). We have experimentally confirmed that the anisotropy of the polariton-polariton interaction is responsible for the build up of the cross-linear polarisation of the signal. The long-living linear polarization is observed at zero detuning. Under elliptical pumping, we have directly measured in the time domain and modelled the effect of self-induced Larmor precession.

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