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arXiv · 2011.05725

Polariton spin jets through optical control

Lucinda Pickup·Julian D. Töpfer·Helgi Sigurdsson·Pavlos G. Lagoudakis
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Abstract

We demonstrate spin polarized jets in extended systems of ballistic exciton-polariton condensates in semiconductor microcavities using optical non-resonant excitation geometries. The structure of the spin jets is determined by the digitally reprogrammable, spatially non-uniform, degree of circular polarization of the excitation laser. The presence of the laser excitation, strong particle interactions, and spin-relaxation leads to a tunable spin-dependent potential landscape for polaritons, with the appearance of intricate polarization patterns due to coherent matter-wave interference. Our work realizes polarization-structured coherent light sources in the absence of gauge fields.

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Lucinda Pickup, Julian D. Töpfer, Helgi Sigurdsson, Pavlos G. Lagoudakis. 2020-11-11. Polariton spin jets through optical control. https://doi.org/10.1103/physrevb.103.155302

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