Using a coherent control between two counter-polarized exciting pulses, it is possible to convert the intensity oscillations associated to the Rabi splitting into polarization oscillations.
In this way the emission from the sample results into a continuously changing polarization state, swirling between opposite polarizations in the time of approximately 1 ps (as the Rabi period), and slowly fading into a fixed state in a 10 ps (as the lower polaritons lifetime).
Colas et al, Polarization shaping of Poincaré beams by polariton oscillations,
Light Sci. Appl. 4, e350 (2015)
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