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腔磁力学中多模声子介导的纠缠增强与竞争同步

Multimode phonon-mediated enhancement of entanglement and competing synchronization in cavity magnomechanics

Z. Imara, Jia-Xin Peng, E. K. Berinyuy, S. K. Singh, A. El Allati

arXiv 2608.07034首次发表:更新:

AI 中文总结

本文提出多模声子介导机制,利用多振动模式作为平行散射通道耦合腔-磁振子极化激元,实现稳态纠缠增强,且极化激元模式量子同步与纠缠源于相同散射过程,为混合磁力学平台操控量子关联提供新途径。

AI 中文摘要

混合量子系统中量子关联的产生因线性相互作用的固有局限仍是核心挑战。在腔磁力学平台中,腔-磁振子耦合会产生杂化腔-磁振子极化激元(CMPs),但作为分束器型相互作用,若无额外非线性或参量过程,其本身无法在极化激元模式间产生纠缠。本文提出一种基于多模声子介导的机制,其中多个振动模式作为平行散射通道,通过斯托克斯和反斯托克斯过程耦合极化激元。研究表明,在本文探究的参数范围内,多声子模式的存在会使稳态纠缠单调增强,突破了传统单模方案的局限。此外,本文证明极化激元模式间的量子同步源于产生纠缠的相同基础散射过程,但相位正交分量随声子数增加呈现相反的标度行为,而振幅同步则展现出随声子通道数增长的集体压缩效应。本文的结果为理解多模相互作用在塑造量子关联中的作用提供了新见解,并为在混合磁力学平台中控制纠缠与集体动力学建立了可行途径。

英文摘要

The generation of quantum correlations in hybrid quantum systems remains a central challenge due to the intrinsic limitations of linear interactions. In cavity magnomechanical platforms, the cavity-magnon coupling gives rise to hybridized cavity-magnon polaritons (CMPs). However, as a beam-splitter-type interaction, it does not by itself generate entanglement between the polariton modes in the absence of additional nonlinear or parametric processes. Here, we propose a mechanism based on multimode phonon mediation, in which multiple vibrational modes act as parallel scattering channels that couple the polaritons through Stokes and anti-Stokes processes. We show that , in the parameter regime explored here, the presence of multiple phonon modes leads to a monotonic enhancement of steady-state entanglement, thereby going beyond the limitations of conventional single-mode schemes. Furthermore, we demonstrate that quantum synchronization between the polariton modes originates from the same underlying scattering processes responsible for entanglement generation, yet exhibits an opposite scaling behavior with increasing phonon number for the phase quadrature, while the amplitude synchronization reveals collective squeezing that grows with the number of phonon channels. Our results provide new insights into the role of multimode interactions in shaping quantum correlations and establish a viable pathway for controlling entanglement and collective dynamics in hybrid magnomechanical platforms.

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