arxiv: 1309.6344 · v1 · pith:6B4SM2FRnew · submitted 2013-09-24 · ❄️ cond-mat.mes-hall

Motion of spin polariton bullets in semiconductor microcavities

C. Adrados , T. C. H. Liew , M. D. Martin , A. Amo , D. Sanvitto , C. Anton , E. Giacobino , A. Kavokin

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A. Bramati L. Vina

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classification ❄️ cond-mat.mes-hall

keywords polaritonspinbulletsdensityhighmicrocavitiessemiconductorswitching

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The dynamics of optical switching in semiconductor microcavities in the strong coupling regime is studied using time- and spatially-resolved spectroscopy. The switching is triggered by polarised short pulses which create spin bullets of high polariton density. The spin packets travel with speeds of the order of 106 m/s due to the ballistic propagation and drift of exciton-polaritons from high to low density areas. The speed is controlled by the angle of incidence of the excitation beams, which changes the polariton group velocity.

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Motion of spin polariton bullets in semiconductor microcavities

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