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All-optical linear-polarization engineering in single and coupled exciton-polariton condensates

All-optical linear-polarization engineering in single and coupled exciton-polariton condensates
All-optical linear-polarization engineering in single and coupled exciton-polariton condensates
We demonstrate all-optical linear polarization control in semiconductor microcavities using an exciton-polariton condensate in an elliptically shaped optical trap. The microcavity inherent TE-TM splitting lifts the pseudospin degeneracy of the anisotropic trap ground state. The emerging fine structure modes are shown to be polarized linearly parallel and perpendicular to the trap major axis. We demonstrate polariton condensation into the excited pseudospin mode with high degree of linear polarization which rotates as we rotate the trap. We then extend our study to a system of two coupled linearly polarized condensates and demonstrate rich spin dynamics reflecting spontaneous synchronization and high correlation between the condensate pseudospins as a function of pump parameters. Our findings show a new type of polarization control with exciting perspectives in both spinoptronics and studies on extended systems of interacting nonlinear optical elements with anisotropic coupling strength and adjustable fine structure.
Polariton, Polariton Condensate, Microcavity, Semiconductor Microcavity polariton, polarization control
2331-7019
Gnusov, Ivan
973d41be-2823-4164-9f3e-4332d2818f07
Sigurdsson, Helgi
c6380293-fe97-4fd0-a819-cf35721d4e5d
Toepfer, Julian, Dominic
f3e89749-2912-4907-b712-6052b732dfb1
Baryshev, Stepan
1860e30e-ce44-46d5-a210-1c8635e58633
Alyatkin, Sergey
485bddd5-8eb7-4045-911b-86b0d401bdd4
Lagoudakis, Pavlos
ea50c228-f006-4edf-8459-60015d961bbf
Gnusov, Ivan
973d41be-2823-4164-9f3e-4332d2818f07
Sigurdsson, Helgi
c6380293-fe97-4fd0-a819-cf35721d4e5d
Toepfer, Julian, Dominic
f3e89749-2912-4907-b712-6052b732dfb1
Baryshev, Stepan
1860e30e-ce44-46d5-a210-1c8635e58633
Alyatkin, Sergey
485bddd5-8eb7-4045-911b-86b0d401bdd4
Lagoudakis, Pavlos
ea50c228-f006-4edf-8459-60015d961bbf

Gnusov, Ivan, Sigurdsson, Helgi, Toepfer, Julian, Dominic, Baryshev, Stepan, Alyatkin, Sergey and Lagoudakis, Pavlos (2021) All-optical linear-polarization engineering in single and coupled exciton-polariton condensates. Physical Review Applied. (In Press)

Record type: Article

Abstract

We demonstrate all-optical linear polarization control in semiconductor microcavities using an exciton-polariton condensate in an elliptically shaped optical trap. The microcavity inherent TE-TM splitting lifts the pseudospin degeneracy of the anisotropic trap ground state. The emerging fine structure modes are shown to be polarized linearly parallel and perpendicular to the trap major axis. We demonstrate polariton condensation into the excited pseudospin mode with high degree of linear polarization which rotates as we rotate the trap. We then extend our study to a system of two coupled linearly polarized condensates and demonstrate rich spin dynamics reflecting spontaneous synchronization and high correlation between the condensate pseudospins as a function of pump parameters. Our findings show a new type of polarization control with exciting perspectives in both spinoptronics and studies on extended systems of interacting nonlinear optical elements with anisotropic coupling strength and adjustable fine structure.

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Accepted/In Press date: 12 August 2021
Additional Information: The authors acknowledge the support of the UK’s Engineering and Physical Sciences Research Council (grant EP/M025330/1 on Hybrid Polaritonics) and by RFBR according to the research projects No. 20-02-00919. H.S. and P.L. acknowledge the European Union’s Horizon 2020 program, through a FET Open research and innovation action under the grant agreement No. 899141 (PoLLoC). H.S. acknowledges the Icelandic Research Fund, grant No. 217631-051. Publisher Copyright: © 2021 American Physical Society.
Keywords: Polariton, Polariton Condensate, Microcavity, Semiconductor Microcavity polariton, polarization control

Identifiers

Local EPrints ID: 450898
URI: http://eprints.soton.ac.uk/id/eprint/450898
ISSN: 2331-7019
PURE UUID: dd18b5f8-c3cf-452b-827d-331f0a1d1e4b
ORCID for Helgi Sigurdsson: ORCID iD orcid.org/0000-0002-4156-4414
ORCID for Julian, Dominic Toepfer: ORCID iD orcid.org/0000-0002-4928-5540
ORCID for Pavlos Lagoudakis: ORCID iD orcid.org/0000-0002-3557-5299

Catalogue record

Date deposited: 19 Aug 2021 16:31
Last modified: 23 Sep 2021 02:50

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Contributors

Author: Ivan Gnusov
Author: Julian, Dominic Toepfer ORCID iD
Author: Stepan Baryshev
Author: Sergey Alyatkin

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