2018
DOI: 10.1103/physrevb.97.195149
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Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities

Abstract: We have experimentally observed an eddy current of exciton polaritons arising in a cylindrical GaAs/AlGaAs pillar microcavity under the nonresonant optical pumping. The polariton current manifests itself in a MachZehnder interferometry image as a characteristic spiral that occurs due to the interference of the light emitted by an exciton-polariton condensate with a reference spherical wave. We have experimentally observed the condensates with the topological charges m = +1, m = −1, and m = −2. The interference… Show more

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Cited by 41 publications
(45 citation statements)
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“…However, in contrast to the current states with an integer OAM (e.g. in [16]), the magnitude of the field of the fractional OAM state varies as a function of the azimuthal angle. It drops down to zero with the decrease of the polariton density.…”
Section: Half-moon Polariton Condensatesmentioning
confidence: 95%
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“…However, in contrast to the current states with an integer OAM (e.g. in [16]), the magnitude of the field of the fractional OAM state varies as a function of the azimuthal angle. It drops down to zero with the decrease of the polariton density.…”
Section: Half-moon Polariton Condensatesmentioning
confidence: 95%
“…The experimental setup we used is described in detail in Ref. [16]. A cylindrical micropillar of a diameter of 25 µn is excited non-resonantly by a laser beam (2 µm f u ll width at half maximum) whose position is deliberately shifted from the center of the pillar.…”
Section: Methodsmentioning
confidence: 99%
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