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VOLUME 104 (2016) | ISSUE 12 | PAGE 849
Controlled spin pattern formation in multistable cavity-polariton systems
DOI: 10.7868/S0370274X16240024
Abstract
Theoretical studies are performed of planar cavity-polariton systems under resonant optical excitation. We show that if the cavity is spatially anisotropic, the polariton spin is highly sensitive to the pump polarization direction, which can be used to modulate the circular polarization of the output light. In particular, when the right- and left-circular components of the incident wave have equal intensities and mutually opposite angular momenta, the pump has strictly linear yet angle-dependent polarization and as such brings about a periodic angular variation of the polariton spin. Free motion of polaritons is the other factor determining the shape of the cavity-field distribution. Such externally driven and highly tunable spin patterns represent a counterpart of spin shaping in nonresonantly excited Bose-Einstein condensates of cavity polaritons.