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...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/104169 http://hdl.handle.net/10220/38805 |
| _version_ | 1826109965574602752 |
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| author | Liew, Timothy Chi Hin Li, G. Egorov, O. A. Ostrovskaya, E. A. |
| 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. |
| author_sort | Liew, Timothy Chi Hin |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T02:27:03Z |
| format | Journal Article |
| id | ntu-10356/104169 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:27:03Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-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 |
| spellingShingle | Liew, Timothy Chi Hin Li, G. Egorov, O. A. Ostrovskaya, E. A. Incoherent excitation and switching of spin states in exciton-polariton condensates |
| title | 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_short | Incoherent excitation and switching of spin states in exciton-polariton condensates |
| title_sort | incoherent excitation and switching of spin states in exciton polariton condensates |
| url | https://hdl.handle.net/10356/104169 http://hdl.handle.net/10220/38805 |
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