Motion of Spin Polariton Bullets in Semiconductor Microcavities

The dynamics of optical switching in semiconductor microcavities in the strong coupling regime is studied by using time-and spatially resolved spectroscopy. The switching is triggered by polarized short pulses which create spin bullets of high polariton density. The spin packets travel with speeds of the order of 10(6) 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.


Published in:
Physical Review Letters, 107, -
Year:
2011
Keywords:
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 Record created 2011-12-16, last modified 2018-03-17


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