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.
Lukoshkin, V. A.
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Kalevich, V. K.
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Afanasiev, M. M.
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Kavokin, K. V.
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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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25 May 2018
Lukoshkin, V. A.
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Kalevich, V. K.
64b70a60-3185-44c9-b1e4-4e6a60b71fb6
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.
09ed8f98-fb1e-44d5-a192-10b0c6541cd9
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
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).
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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195149
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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: 17 Mar 2024 12:06
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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
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