https://doi.org/10.1140/epjp/s13360-026-07302-7
Regular Article
Manipulation of photonic spin Hall effect via exciton-optomechanics
1
Basic Teaching and Research Department, Shenyang Urban Construction University, 110167, Shenyang, China
2
Department of Mathematics, College of Sciences, University of Bisha, P.O. Box 344, 61922, Bisha, Saudi Arabia
a
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Received:
25
November
2025
Accepted:
7
January
2026
Published online:
20
January
2026
Abstract
Exciton-optomechanics, which integrates cavity exciton polaritons with optomechanical systems, offers a unique platform for exploring light–matter interactions via nonlinear couplings among photons, phonons, and excitons. We present a theoretical model for the dynamic control of the photonic spin Hall effect (PSHE) in such a system, leveraging the strong spin–orbit coupling in microcavity polaritons. Our analysis shows that this coupling induces a transverse spatial separation of photons with opposite spins. The spin-dependent shift can be tuned from positive to negative values by varying the exciton–photon (EPt) and effective exciton–phonon (EPn) coupling strengths, exhibiting a strong dependence on the optical Brewster angle. Without EPt coupling, a resonant absorption profile results in a higher PSHE peak. In contrast, introducing EPt coupling generates multiple transmission peaks that suppress the PSHE magnitude. Notably, increasing the effective EPn coupling modifies the ratio of the reflection coefficients, leading to a significant enhancement of the PSHE. Furthermore, the PSHE can be controlled via probe field detuning and the beam waist. These findings establish dynamic parameter tuning as a powerful method for amplifying the PSHE, paving the way for advanced spin-photonic devices.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
