Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates
We study the magnetophotoluminescence of an optically trapped exciton-polariton condensate in a planar semiconductor microcavity with multiple quantum wells. Extremely high condensate coherence time and continuous control over the polariton confinement are among the advantages provided by optical trapping. This allows us to resolve magnetically induced fine-energy shifts in the condensate and identify unusual dynamical regions in its parameter space. We observe polariton Zeeman splitting and, in small traps with tight confinement, demonstrate its full parametric screening when the condensate density exceeds a critical value, reminiscent of the spin-Meissner effect. For larger optical traps, we observe a complete inversion in the Zeeman splitting as a function of power, underlining the importance of condensate confinement and interactions with its background reservoir excitons.
Sawicki, Krzysztof
10cb117e-93e1-4857-9c21-2f258d9302f6
Dovzhenko, Dmitriy
aafb64cd-a457-4b51-9a83-32ab0fea5d16
Wang, Yuan
6e0aca42-6096-47c8-b11a-a8072348fac5
Cookson, Tamsin
70c15876-7c6d-4de5-a0ce-cc4beb12a324
Sigurðsson, Helgi
98664d41-42da-4da5-8584-ae8e0cad894c
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
26 March 2024
Sawicki, Krzysztof
10cb117e-93e1-4857-9c21-2f258d9302f6
Dovzhenko, Dmitriy
aafb64cd-a457-4b51-9a83-32ab0fea5d16
Wang, Yuan
6e0aca42-6096-47c8-b11a-a8072348fac5
Cookson, Tamsin
70c15876-7c6d-4de5-a0ce-cc4beb12a324
Sigurðsson, Helgi
98664d41-42da-4da5-8584-ae8e0cad894c
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Sawicki, Krzysztof, Dovzhenko, Dmitriy, Wang, Yuan, Cookson, Tamsin, Sigurðsson, Helgi and Lagoudakis, Pavlos G.
(2024)
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates.
Physical Review B, 109 (12), [125307].
(doi:10.1103/PhysRevB.109.125307).
Abstract
We study the magnetophotoluminescence of an optically trapped exciton-polariton condensate in a planar semiconductor microcavity with multiple quantum wells. Extremely high condensate coherence time and continuous control over the polariton confinement are among the advantages provided by optical trapping. This allows us to resolve magnetically induced fine-energy shifts in the condensate and identify unusual dynamical regions in its parameter space. We observe polariton Zeeman splitting and, in small traps with tight confinement, demonstrate its full parametric screening when the condensate density exceeds a critical value, reminiscent of the spin-Meissner effect. For larger optical traps, we observe a complete inversion in the Zeeman splitting as a function of power, underlining the importance of condensate confinement and interactions with its background reservoir excitons.
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Accepted/In Press date: 27 February 2024
Published date: 26 March 2024
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Local EPrints ID: 496883
URI: http://eprints.soton.ac.uk/id/eprint/496883
ISSN: 2469-9950
PURE UUID: e2fe8619-292c-49bf-8a8c-155aee7c5e1a
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Date deposited: 08 Jan 2025 11:30
Last modified: 10 Jan 2025 03:11
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Contributors
Author:
Dmitriy Dovzhenko
Author:
Tamsin Cookson
Author:
Helgi Sigurðsson
Author:
Pavlos G. Lagoudakis
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