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<p>We study a hybrid magnomechanical system (HMMS) with two microwave cavities, each containing a YIG sphere, with an ensemble of atoms placed at the intersection of the cavities. We obtain indirect bipartite entanglement across several subsystems (Phonon mode of YIG-1 and magnon-2, Phonon mode of YIG-1 and cavity-2 mode, magnon-1 and cavity-2 modes, magnon-1 and magnon-2 modes, magnon-2 and cavity-1 modes, and cavity-1 and cavity-2 modes). We use logarithmic negativity as an entanglement metric to study the steady-state Gaussian correlations in the linearized coupling regime and investigate the effects of temperature, coupling strengths, and cavity detuning. In this work, we do not study the direct entanglement with other subsystems, but we conclude that the atomic ensemble greatly improves long-range entanglement by allowing coherent exchange between the two cavities, and generated bipartite entanglement remains robust up to experimentally accessible temperature ranges. Non-local quantum correlations in HMMS may be achieved in a unique and versatile manner using the suggested method, with potential applications spanning scalable quantum networks and on-chip quantum information processing.</p>

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Entanglement Generation of Different Subsystems in a Hybrid Magnomechanical System

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Muhammad Atif Nawaz,
  • Zainab Khalid,
  • Muhammad Muneeb,
  • Marium Saeed,
  • Khalid Naseer

摘要

We study a hybrid magnomechanical system (HMMS) with two microwave cavities, each containing a YIG sphere, with an ensemble of atoms placed at the intersection of the cavities. We obtain indirect bipartite entanglement across several subsystems (Phonon mode of YIG-1 and magnon-2, Phonon mode of YIG-1 and cavity-2 mode, magnon-1 and cavity-2 modes, magnon-1 and magnon-2 modes, magnon-2 and cavity-1 modes, and cavity-1 and cavity-2 modes). We use logarithmic negativity as an entanglement metric to study the steady-state Gaussian correlations in the linearized coupling regime and investigate the effects of temperature, coupling strengths, and cavity detuning. In this work, we do not study the direct entanglement with other subsystems, but we conclude that the atomic ensemble greatly improves long-range entanglement by allowing coherent exchange between the two cavities, and generated bipartite entanglement remains robust up to experimentally accessible temperature ranges. Non-local quantum correlations in HMMS may be achieved in a unique and versatile manner using the suggested method, with potential applications spanning scalable quantum networks and on-chip quantum information processing.