Incoherent excitation and switching of spin states in exciton-polariton condensates

We investigate, theoretically and numerically, the spin dynamics of a two-component exciton-polariton condensate created and sustained by nonresonant spin-polarized optical pumping in a semiconductor microcavity. Using the open-dissipative mean-field model, we show that the existence of well defined...

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Main Authors: Liew, Timothy Chi Hin, Li, G., Egorov, O. A., Ostrovskaya, E. A.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2015
Online Access:https://hdl.handle.net/10356/104169
http://hdl.handle.net/10220/38805
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1041692023-02-28T19:44:42Z Incoherent excitation and switching of spin states in exciton-polariton condensates Liew, Timothy Chi Hin Li, G. Egorov, O. A. Ostrovskaya, E. A. School of Physical and Mathematical Sciences We investigate, theoretically and numerically, the spin dynamics of a two-component exciton-polariton condensate created and sustained by nonresonant spin-polarized optical pumping in a semiconductor microcavity. Using the open-dissipative mean-field model, we show that the existence of well defined phase-locked steady states of the condensate may lead to efficient switching and control of spin (polarization) states with a nonresonant excitation. Spatially inhomogeneous pulsed excitations can cause symmetry breaking in the pseudospin structure of the condensate and lead to formation of nontrivial spin textures. Our model is universally applicable to two linearly coupled polariton condensates, and therefore can also describe the behavior of condensate populations and phases in “double-well” type potentials. Published version 2015-10-13T09:26:57Z 2019-12-06T21:27:41Z 2015-10-13T09:26:57Z 2019-12-06T21:27:41Z 2015 2015 Journal Article Li, G., Liew, T. C. H., Egorov, O. A., & Ostrovskaya, E. A. (2015). Incoherent excitation and switching of spin states in exciton-polariton condensates. Physical Review B, 92(6), 064304-. https://hdl.handle.net/10356/104169 http://hdl.handle.net/10220/38805 10.1103/PhysRevB.92.064304 en Physical Review B © 2015 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.92.064304]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
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continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
description We investigate, theoretically and numerically, the spin dynamics of a two-component exciton-polariton condensate created and sustained by nonresonant spin-polarized optical pumping in a semiconductor microcavity. Using the open-dissipative mean-field model, we show that the existence of well defined phase-locked steady states of the condensate may lead to efficient switching and control of spin (polarization) states with a nonresonant excitation. Spatially inhomogeneous pulsed excitations can cause symmetry breaking in the pseudospin structure of the condensate and lead to formation of nontrivial spin textures. Our model is universally applicable to two linearly coupled polariton condensates, and therefore can also describe the behavior of condensate populations and phases in “double-well” type potentials.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Liew, Timothy Chi Hin
Li, G.
Egorov, O. A.
Ostrovskaya, E. A.
format Article
author Liew, Timothy Chi Hin
Li, G.
Egorov, O. A.
Ostrovskaya, E. A.
spellingShingle Liew, Timothy Chi Hin
Li, G.
Egorov, O. A.
Ostrovskaya, E. A.
Incoherent excitation and switching of spin states in exciton-polariton condensates
author_sort Liew, Timothy Chi Hin
title Incoherent excitation and switching of spin states in exciton-polariton condensates
title_short Incoherent excitation and switching of spin states in exciton-polariton condensates
title_full Incoherent excitation and switching of spin states in exciton-polariton condensates
title_fullStr Incoherent excitation and switching of spin states in exciton-polariton condensates
title_full_unstemmed Incoherent excitation and switching of spin states in exciton-polariton condensates
title_sort incoherent excitation and switching of spin states in exciton-polariton condensates
publishDate 2015
url https://hdl.handle.net/10356/104169
http://hdl.handle.net/10220/38805
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