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Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities

Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities
Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities

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.

2469-9950
Lukoshkin, V. A.
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Kalevich, V. K.
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Afanasiev, M. M.
1a6c11a9-c556-4d80-bdc7-15dda6c56950
Kavokin, K. V.
b29928c1-4e70-4305-bc0b-261f4557a835
Hatzopoulos, Z.
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Savvidis, P. G.
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Sedov, E. S.
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Kavokin, A. V.
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Lukoshkin, V. A.
80c3bcc0-1caf-49b9-92b3-e5eaef1514cd
Kalevich, V. K.
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Afanasiev, M. M.
1a6c11a9-c556-4d80-bdc7-15dda6c56950
Kavokin, K. V.
b29928c1-4e70-4305-bc0b-261f4557a835
Hatzopoulos, Z.
4ee394c3-9399-41e2-ab9b-2ddab346bd41
Savvidis, P. G.
9922c8cf-9504-4949-822c-767cdcad58be
Sedov, E. S.
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Kavokin, A. V.
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Lukoshkin, V. A., Kalevich, V. K., Afanasiev, M. M., Kavokin, K. V., Hatzopoulos, Z., Savvidis, P. G., Sedov, E. S. and Kavokin, A. V. (2018) Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities. Physical Review B, 97 (19), [195149]. (doi:10.1103/PhysRevB.97.195149).

Record type: Article

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 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.

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Accepted/In Press date: 20 March 2018
e-pub ahead of print date: 25 May 2018
Published date: 25 May 2018

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Local EPrints ID: 421686
URI: http://eprints.soton.ac.uk/id/eprint/421686
ISSN: 2469-9950
PURE UUID: c9880e87-30d8-499a-81ed-42d8b189d9b3

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Date deposited: 21 Jun 2018 16:30
Last modified: 25 Nov 2021 17:00

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Contributors

Author: V. A. Lukoshkin
Author: V. K. Kalevich
Author: M. M. Afanasiev
Author: K. V. Kavokin
Author: Z. Hatzopoulos
Author: P. G. Savvidis
Author: E. S. Sedov
Author: A. V. Kavokin

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