Nonresonant optical control of a spinor polariton condensate

We investigate the spin dynamics of polariton condensates spatially separated from and effectively confined by the pumping exciton reservoir. We obtain a strong correlation between the ellipticity of the nonresonant optical pump and the degree of circular polarization (DCP) of the condensate at the...

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Main Authors: Askitopoulos, A., Kalinin, K., Liew, Timothy Chi Hin, Cilibrizzi, P., Hatzopoulos, Z., Savvidis, P. G., Berloff, N. G., Lagoudakis, P. G.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
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Online Access:https://hdl.handle.net/10356/85845
http://hdl.handle.net/10220/43870
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-858452023-02-28T19:23:27Z Nonresonant optical control of a spinor polariton condensate Askitopoulos, A. Kalinin, K. Liew, Timothy Chi Hin Cilibrizzi, P. Hatzopoulos, Z. Savvidis, P. G. Berloff, N. G. Lagoudakis, P. G. School of Physical and Mathematical Sciences Spinor Nonresonant We investigate the spin dynamics of polariton condensates spatially separated from and effectively confined by the pumping exciton reservoir. We obtain a strong correlation between the ellipticity of the nonresonant optical pump and the degree of circular polarization (DCP) of the condensate at the onset of condensation. With increasing excitation density we observe a reversal of the DCP. The spin dynamics of the trapped condensate are described within the framework of the spinor complex Ginzburg-Landau equations in the Josephson regime, where the dynamics of the system are reduced to a current-driven Josephson junction. We show that the observed spin reversal is due to the interplay between an internal Josephson coupling effect and the detuning of the two projections of the spinor condensate via transition from a synchronized to a desynchronized regime. These results suggest that spinor polariton condensates can be controlled by tuning the nonresonant excitation density offering applications in electrically pumped polariton spin switches. Published version 2017-10-13T02:55:09Z 2019-12-06T16:11:14Z 2017-10-13T02:55:09Z 2019-12-06T16:11:14Z 2016 Journal Article Askitopoulos, A., Kalinin, K., Liew, T. C. H., Cilibrizzi, P., Hatzopoulos, Z., Savvidis, P. G., et al. (2016). Nonresonant optical control of a spinor polariton condensate. Physical Review B, 93, 205307-. 2469-9950 https://hdl.handle.net/10356/85845 http://hdl.handle.net/10220/43870 10.1103/PhysRevB.93.205307 en Physical Review B ©2016 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.93.205307]. 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. 8 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Spinor
Nonresonant
spellingShingle Spinor
Nonresonant
Askitopoulos, A.
Kalinin, K.
Liew, Timothy Chi Hin
Cilibrizzi, P.
Hatzopoulos, Z.
Savvidis, P. G.
Berloff, N. G.
Lagoudakis, P. G.
Nonresonant optical control of a spinor polariton condensate
description We investigate the spin dynamics of polariton condensates spatially separated from and effectively confined by the pumping exciton reservoir. We obtain a strong correlation between the ellipticity of the nonresonant optical pump and the degree of circular polarization (DCP) of the condensate at the onset of condensation. With increasing excitation density we observe a reversal of the DCP. The spin dynamics of the trapped condensate are described within the framework of the spinor complex Ginzburg-Landau equations in the Josephson regime, where the dynamics of the system are reduced to a current-driven Josephson junction. We show that the observed spin reversal is due to the interplay between an internal Josephson coupling effect and the detuning of the two projections of the spinor condensate via transition from a synchronized to a desynchronized regime. These results suggest that spinor polariton condensates can be controlled by tuning the nonresonant excitation density offering applications in electrically pumped polariton spin switches.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Askitopoulos, A.
Kalinin, K.
Liew, Timothy Chi Hin
Cilibrizzi, P.
Hatzopoulos, Z.
Savvidis, P. G.
Berloff, N. G.
Lagoudakis, P. G.
format Article
author Askitopoulos, A.
Kalinin, K.
Liew, Timothy Chi Hin
Cilibrizzi, P.
Hatzopoulos, Z.
Savvidis, P. G.
Berloff, N. G.
Lagoudakis, P. G.
author_sort Askitopoulos, A.
title Nonresonant optical control of a spinor polariton condensate
title_short Nonresonant optical control of a spinor polariton condensate
title_full Nonresonant optical control of a spinor polariton condensate
title_fullStr Nonresonant optical control of a spinor polariton condensate
title_full_unstemmed Nonresonant optical control of a spinor polariton condensate
title_sort nonresonant optical control of a spinor polariton condensate
publishDate 2017
url https://hdl.handle.net/10356/85845
http://hdl.handle.net/10220/43870
_version_ 1759857334943744000