Polariton spin jets through optical control

Pickup, L., Töpfer, J.D., Sigurdsson, Helgi and Lagoudakis, P. G. (2021) Polariton spin jets through optical control. Physical Review B, 103 (15), [155302]. (doi:10.1103/PhysRevB.103.155302).

Record type: Article

Abstract

We demonstrate spin-polarized jets in extended systems of ballistic exciton-polariton condensates in semiconductor microcavities using optical nonresonant excitation geometries. The structure of the spin jets is determined by the spatially patterned degree of circular polarization of the nonresonant 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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Accepted/In Press date: 2 March 2021

e-pub ahead of print date: 5 April 2021

Published date: 5 April 2021

Additional Information: Funding Information: L.P., J.D.T., H.S., and P.G.L. acknowledge the support of the United Kingdom's Engineering and Physical Sciences Research Council (Grant No. EP/M025330/1 on Hybrid Polaritonics). P.G.L. acknowledges the support of RFBR Project No. 20-02-00919. H.S. and P.G.L. acknowledge the support of the European Union's Horizon 2020 program, through a FET Open research and innovation action under the Grant Agreement No. 899141 (PoLLoC). H.S. acknowledges hospitality provided by the University of Iceland. We thank M. Silva for his contribution to the experimental setup. Publisher Copyright: © 2021 American Physical Society.