Collective state transitions of exciton-polaritons loaded into a periodic potential

We study the loading of a nonequilibrium, dissipative system of composite bosons—exciton polaritons—into a one-dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which...

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Main Authors: Winkler, K., Egorov, O. A., Savenko, I. G., Ma, X., Estrecho, E., Gao, T., Müller, S., Kamp, M., Liew, Timothy Chi Hin, Ostrovskaya, E. A., Höfling, S., Schneider, C.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
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Online Access:https://hdl.handle.net/10356/85834
http://hdl.handle.net/10220/43875
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-858342023-02-28T19:23:22Z Collective state transitions of exciton-polaritons loaded into a periodic potential Winkler, K. Egorov, O. A. Savenko, I. G. Ma, X. Estrecho, E. Gao, T. Müller, S. Kamp, M. Liew, Timothy Chi Hin Ostrovskaya, E. A. Höfling, S. Schneider, C. School of Physical and Mathematical Sciences Bose gases Exciton-polaritons We study the loading of a nonequilibrium, dissipative system of composite bosons—exciton polaritons—into a one-dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and conclude that polariton-phonon scattering is a plausible energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers. Published version 2017-10-13T05:36:18Z 2019-12-06T16:11:01Z 2017-10-13T05:36:18Z 2019-12-06T16:11:01Z 2016 Journal Article Winkler, K., Egorov, O. A., Savenko, I. G., Ma, X., Estrecho, E., Gao, T., et al. (2016). Collective state transitions of exciton-polaritons loaded into a periodic potential. Physical Review B, 93(12), 121303-. 2469-9950 https://hdl.handle.net/10356/85834 http://hdl.handle.net/10220/43875 10.1103/PhysRevB.93.121303 en Physical Review B © 2016 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.93.121303]. 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. 6 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 Bose gases
Exciton-polaritons
spellingShingle Bose gases
Exciton-polaritons
Winkler, K.
Egorov, O. A.
Savenko, I. G.
Ma, X.
Estrecho, E.
Gao, T.
Müller, S.
Kamp, M.
Liew, Timothy Chi Hin
Ostrovskaya, E. A.
Höfling, S.
Schneider, C.
Collective state transitions of exciton-polaritons loaded into a periodic potential
description We study the loading of a nonequilibrium, dissipative system of composite bosons—exciton polaritons—into a one-dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and conclude that polariton-phonon scattering is a plausible energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Winkler, K.
Egorov, O. A.
Savenko, I. G.
Ma, X.
Estrecho, E.
Gao, T.
Müller, S.
Kamp, M.
Liew, Timothy Chi Hin
Ostrovskaya, E. A.
Höfling, S.
Schneider, C.
format Article
author Winkler, K.
Egorov, O. A.
Savenko, I. G.
Ma, X.
Estrecho, E.
Gao, T.
Müller, S.
Kamp, M.
Liew, Timothy Chi Hin
Ostrovskaya, E. A.
Höfling, S.
Schneider, C.
author_sort Winkler, K.
title Collective state transitions of exciton-polaritons loaded into a periodic potential
title_short Collective state transitions of exciton-polaritons loaded into a periodic potential
title_full Collective state transitions of exciton-polaritons loaded into a periodic potential
title_fullStr Collective state transitions of exciton-polaritons loaded into a periodic potential
title_full_unstemmed Collective state transitions of exciton-polaritons loaded into a periodic potential
title_sort collective state transitions of exciton-polaritons loaded into a periodic potential
publishDate 2017
url https://hdl.handle.net/10356/85834
http://hdl.handle.net/10220/43875
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