近日，郑州轻工业学院焦亚峰团队揭示了腔-磁振子光力学中相控鲁棒三量子纠缠。相关论文于2025年7月30日发表在《物理评论A》杂志上。

涉及多粒子系统的高纠缠态的制备在量子物理中具有至关重要的意义，在探索量子力学的本质和为超越经典极限的新生量子技术提供必要的量子资源方面发挥着重要作用。

研究组提出了如何在混合腔磁力系统中产生和操纵光子、声子和磁振子的三方纠缠态。结果表明，在相反的输入方向上同时施加两个相干驱动场，可以通过调谐驱动场的相位差来相干有效地调节系统的磁-力相互作用。基于这一特征，研究组发现三方纠缠也具有相位依赖性，并且可以在一定的相位差下得到增强。更有趣的是，通过选择合适的驱动场相位差，还可以提高三方纠缠对环境热噪声的抑制能力。该发现提供了一种有前景的方法来操纵和保护脆弱的三方纠缠，这适用于需要多方纠缠资源的广泛量子协议，如量子通信和量子计量。

附：英文原文

Title: Phase-controlled robust tripartite quantum entanglement in cavity-magnon optomechanics

Author: Jing-Xue Liu, Ya-Feng Jiao, Bin Yin, Hong-Yun Yu, Ruo-Chen Wang, Hui Jing

Issue&Volume: 2025/07/30

Abstract: The preparation of highly entangled states involving multiparticle systems is of crucial importance in quantum physics, playing a fundamental role in exploring the nature of quantum mechanics and offering essential quantum resources for nascent quantum technologies that surpass classical limits. Here we present how to generate and manipulate a tripartite entangled state of photons, phonons, and magnons within a hybrid cavity magnomechanical system. It is shown that simultaneously applying two coherent driving fields to this system in opposite input directions enables a coherent and effective way to regulate the magnomechanical interaction by tuning the phase difference of the driving fields. Based on this feature, it is found that the tripartite entanglement also becomes phase dependent and can be enhanced for certain phase differences. More interestingly, it is shown that the robustness of tripartite entanglement against environmental thermal noises can also be improved by choosing a proper phase difference of the driving fields. Our findings offer a promising way to manipulate and protect fragile tripartite entanglement, which is applicable to a wide range of quantum protocols that require multipartite entangled resources such as quantum communication and quantum metrology.

DOI: 10.1103/cr9z-n6ry

Source: https://journals.aps.org/pra/abstract/10.1103/cr9z-n6ry