https://doi.org/10.1140/epjp/s13360-024-05511-6
Regular Article
Generation of quantum correlations through optical parametric amplification in a hybrid optomechanical system
1
Department of Applied Physics, Adama Science and Technology University, 1888, Adama, Ethiopia
2
Department of Physics, Wollega University, 395, Nekemte, Ethiopia
3
Department of Physics, Arba Minch University 21, Arba Minch, Ethiopia
e
tesfaye.gebremariam@amu.edu.et
Received:
6
June
2024
Accepted:
26
July
2024
Published online:
8
August
2024
In this paper, we theoretically investigate the generation of quantum correlations between the cavity–mirror, cavity–cavity, and mirror–mirror interactions through optical parametric amplification (OPA) in two coupled optomechanical systems. Utilizing the linearization approximation, we assess the system’s quantum correlations using logarithmic negativity, quantum steering, and Gaussian quantum discord. Our findings demonstrate that under OPA, higher nonlinear gain enhances quantum correlations, resulting in stronger entanglement. However, the decay rates significantly impact the sustainability of these correlations. Additionally, we show that Gaussian quantum discord contributes to broader quantum correlations beyond entanglement. We also characterize quantum steering by examining the steerability between subsystems, revealing that strong coupling under OPA boosts quantum steering between cavity modes. Our results may have potential applications in constructing long-distance quantum communication networks and facilitating the manipulation of quantum state transfer.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. 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.
