Research output: Contribution to journal › Article › peer-review
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 Mach-Zehnder 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 pattern corresponding to the m=-2 current represents the twin spiral emerging from the center of the micropillar. The switching between the current modes with different topological charges is achieved by a weak displacement of the pump spot.
Original language | English |
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Article number | 195149 |
Number of pages | 6 |
Journal | Physical Review B |
Volume | 97 |
Issue number | 19 |
DOIs | |
State | Published - 25 May 2018 |
ID: 36005000