https://doi.org/10.1140/epjp/s13360-025-06323-y
Regular Article
Enhancement of quantum correlations in coupled magnomechanical systems via parametric amplifier
1
Department of Applied Physics, Adama Science and Technology University, 1888, Adamma, Ethiopia
2
Department of Physics, Wachemo University, 667, Hossana, Ethiopia
3
Department of Physics, Arba Minch University, 21, Arba Minch, Ethiopia
4
LPTHE, Department of Physics, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
5
Department of Physics, Injibara University, 40, Injibara, Ethiopia
a
tesfaye.gebremariam@amu.edu.et
Received:
7
December
2024
Accepted:
12
April
2025
Published online:
20
May
2025
We propose a scheme to enhance quantum correlations in a coupled magnomechanical system using a parametric amplifier (PA). The system comprises two microwave cavities coupled via cavity coupling strength J, with one cavity consisting of the PA and the other containing a yttrium iron garnet (YIG) sphere. Within the YIG cavity, magnons interact with the cavity mode via magnetic dipole interaction and with phonons via magnetostrictive coupling. Our results show that PA significantly enhances bipartite entanglement and quantum discord between microwave cavities and cavity 1-magnon modes, particularly for specific coupling strengths and detunings. Notably, quantum discord remains robust at higher temperatures, whereas entanglement vanishes. This scheme provides a promising framework for enhancing quantum correlations over distant bipartitions, paving the way for future technological applications.
Copyright comment 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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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.
