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Artificial gravity effect on spin-polarized exciton-polaritons

Artificial gravity effect on spin-polarized exciton-polaritons
Artificial gravity effect on spin-polarized exciton-polaritons
The pseudospin dynamics of long-living exciton-polaritons in a wedged 2D cavity has been studied theoretically accounting for the external magnetic field effect. The cavity width variation plays the role of the artificial gravitational force acting on a massive particle: exciton-polariton. A semi-classical model of the spin-polarization dynamics of ballistically propagating exciton-polaritons has been developed. It has been shown that for the specific choice of the magnetic field magnitude and the initial polariton wave vector the polariton polarization vector tends to an attractor on the Poincar ́e sphere. Based on this effect, the switching of the polariton polarization in the ballistic regime has been demonstrated. The self-interference of the polariton field emitted by a point-like source has been shown to induce the formation of interference patterns.
2045-2322
Sedov, E.S.
09ed8f98-fb1e-44d5-a192-10b0c6541cd9
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Sedov, E.S.
09ed8f98-fb1e-44d5-a192-10b0c6541cd9
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b

Sedov, E.S. and Kavokin, A.V. (2017) Artificial gravity effect on spin-polarized exciton-polaritons. Scientific Reports, 7, [9797]. (doi:10.1038/s41598-017-10137-z).

Record type: Article

Abstract

The pseudospin dynamics of long-living exciton-polaritons in a wedged 2D cavity has been studied theoretically accounting for the external magnetic field effect. The cavity width variation plays the role of the artificial gravitational force acting on a massive particle: exciton-polariton. A semi-classical model of the spin-polarization dynamics of ballistically propagating exciton-polaritons has been developed. It has been shown that for the specific choice of the magnetic field magnitude and the initial polariton wave vector the polariton polarization vector tends to an attractor on the Poincar ́e sphere. Based on this effect, the switching of the polariton polarization in the ballistic regime has been demonstrated. The self-interference of the polariton field emitted by a point-like source has been shown to induce the formation of interference patterns.

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Accepted/In Press date: 4 August 2017
e-pub ahead of print date: 29 August 2017

Identifiers

Local EPrints ID: 412999
URI: http://eprints.soton.ac.uk/id/eprint/412999
ISSN: 2045-2322
PURE UUID: bbf4a798-1e7d-4e5e-a662-8b30ed4f8c20

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Date deposited: 10 Aug 2017 16:30
Last modified: 22 Nov 2021 05:39

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Contributors

Author: E.S. Sedov
Author: A.V. Kavokin

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