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Hysteresis in linearly polarized nonresonantly driven exciton-polariton condensates

Hysteresis in linearly polarized nonresonantly driven exciton-polariton condensates
Hysteresis in linearly polarized nonresonantly driven exciton-polariton condensates
It is shown that a condensate of microcavity exciton-polaritons exhibits bistability between its two orthogonal linearly polarized components for varying nonresonant excitation power. A non-Hermitian splitting of these components results in two parity-symmetric fixed-point solutions of opposite polarization, making up the hysteresis branches. These solutions correspond to the lowest threshold linearly polarized mode, which dominates at low pump powers, and a cross-polarized mode, which appears due to nonlinear pinning at higher excitation powers. The spin symmetry of the solutions extends the nonresonant bistable operation of polariton condensates to the entire equatorial plane of the Poincaré sphere. The results pave the way towards development of tailored bistable, linearly polarized, coherent sources of light.
polariton condensate, spinor condensates, Microcavity, strong light-matter interaction
2643-1564
Sigurdsson, Helgi
c6380293-fe97-4fd0-a819-cf35721d4e5d
Sigurdsson, Helgi
c6380293-fe97-4fd0-a819-cf35721d4e5d

Sigurdsson, Helgi (2020) Hysteresis in linearly polarized nonresonantly driven exciton-polariton condensates. Physical Review Research, 2, [023323]. (doi:10.1103/PhysRevResearch.2.023323).

Record type: Article

Abstract

It is shown that a condensate of microcavity exciton-polaritons exhibits bistability between its two orthogonal linearly polarized components for varying nonresonant excitation power. A non-Hermitian splitting of these components results in two parity-symmetric fixed-point solutions of opposite polarization, making up the hysteresis branches. These solutions correspond to the lowest threshold linearly polarized mode, which dominates at low pump powers, and a cross-polarized mode, which appears due to nonlinear pinning at higher excitation powers. The spin symmetry of the solutions extends the nonresonant bistable operation of polariton condensates to the entire equatorial plane of the Poincaré sphere. The results pave the way towards development of tailored bistable, linearly polarized, coherent sources of light.

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More information

Accepted/In Press date: 27 May 2020
Published date: 11 June 2020
Keywords: polariton condensate, spinor condensates, Microcavity, strong light-matter interaction

Identifiers

Local EPrints ID: 441671
URI: http://eprints.soton.ac.uk/id/eprint/441671
ISSN: 2643-1564
PURE UUID: 13100d9c-ec2b-4231-aa8b-fe06d86c90b5
ORCID for Helgi Sigurdsson: ORCID iD orcid.org/0000-0002-4156-4414

Catalogue record

Date deposited: 23 Jun 2020 16:55
Last modified: 18 Feb 2021 17:38

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