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Entanglement in a cavity magnomechanical system

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Abstract

We study steady-state three bipartite entanglements in a cavity magnomechanical system which is composed of magnon, two cavities, and mechanical resonator. The two cavities are connected by an optical fiber, one of cavities couples to the magnon via the magnetic dipole interaction, at the same time, the magnon couples to the mechanical resonator via magnetostrictive interaction. Making use of logarithmic negativity, magnon, cavity, and mechanical resonator are entangled with each other by selecting appropriately the parameter. We find that the steady-state entanglements in the magnon–mechanical resonator subsystem and in the magnon–cavity subsystem are very sensitive to the effective magnomechanical coupling strength. Moreover, the entanglement is robust with respect to the certain environment temperature.

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Data Availability Statement

All data generated or analysed during this study are included in this published article (and its supplementary information files).

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Authors and Affiliations

  1. College of Physics, Tonghua Normal University, Tonghua, 134000, Jilin, People’s Republic of China

    Jing Wang

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Correspondence to Jing Wang.

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Wang, J. Entanglement in a cavity magnomechanical system. Quantum Inf Process 21, 105 (2022). https://doi.org/10.1007/s11128-022-03438-4

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