Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities

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

Research output

1 Citation (Scopus)

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.

Original languageEnglish
Article number195149
JournalPhysical Review B
Volume97
Issue number19
DOIs
Publication statusPublished - 25 May 2018

Fingerprint

Microcavities
Excitons
polaritons
excitons
Optical pumping
condensates
Eddy currents
Interferometry
Mach number
interference
spherical waves
Pumps
optical pumping
eddy currents
aluminum gallium arsenides
emerging
interferometry
pumps
LDS 751
gallium arsenide

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Lukoshkin, V. A., Kalevich, V. K., Afanasiev, M. M., Kavokin, K. V., Hatzopoulos, Z., Savvidis, P. G., ... Kavokin, A. V. (2018). Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities. Physical Review B, 97(19), [195149]. https://doi.org/10.1103/PhysRevB.97.195149
Lukoshkin, V. A. ; Kalevich, V. K. ; Afanasiev, M. M. ; Kavokin, K. V. ; Hatzopoulos, Z. ; Savvidis, P. G. ; Sedov, E. S. ; Kavokin, A. V. / Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities. In: Physical Review B. 2018 ; Vol. 97, No. 19.
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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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Lukoshkin, VA, Kalevich, VK, Afanasiev, MM, Kavokin, KV, Hatzopoulos, Z, Savvidis, PG, Sedov, ES & Kavokin, AV 2018, 'Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities', Physical Review B, vol. 97, no. 19, 195149. https://doi.org/10.1103/PhysRevB.97.195149

Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities. / Lukoshkin, V. A.; Kalevich, V. K.; Afanasiev, M. M.; Kavokin, K. V.; Hatzopoulos, Z.; Savvidis, P. G.; Sedov, E. S.; Kavokin, A. V.

In: Physical Review B, Vol. 97, No. 19, 195149, 25.05.2018.

Research output

TY - JOUR

T1 - Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities

AU - Lukoshkin, V. A.

AU - Kalevich, V. K.

AU - Afanasiev, M. M.

AU - Kavokin, K. V.

AU - Hatzopoulos, Z.

AU - Savvidis, P. G.

AU - Sedov, E. S.

AU - Kavokin, A. V.

PY - 2018/5/25

Y1 - 2018/5/25

N2 - 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.

AB - 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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Lukoshkin VA, Kalevich VK, Afanasiev MM, Kavokin KV, Hatzopoulos Z, Savvidis PG et al. Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities. Physical Review B. 2018 May 25;97(19). 195149. https://doi.org/10.1103/PhysRevB.97.195149