论文标题
由二维磁性材料形成的空腔雄伟的量子状态工程
Quantum-state engineering in cavity magnomechanics formed by two-dimensional magnetic materials
论文作者
论文摘要
腔宏伟学已成为探索宏观量子效应的理想平台。它将磁子，声子和光子汇集在一起，为量子技术打开了许多机会。它通常是由Yttrium Iron Garnet实现的，该石榴石展示了参数磁通偶联$ \ hat {m}^†\ hat {m} {m}（\ hat {b}^†+\ hat {b}）$，带有$ \ hat hat {m} $ hat {m} $ and $ \ hat {m phonon and and and of the B} $受到最近实现二维（2D）磁体的启发，我们提出了使用带有光学和磁性驱动器的2D磁性材料的腔宏伟系统。它具有共存的光子辐射辐射压力耦合和二次镁偶联$ \ hat {m}^†\ hat {m}（\ hat {b}^†+\ hat {b}）在抑制声子中，在三种模式中生成了三种模式之间的声子和双方纠缠的稳定挤压。与以前的方案相比，我们的计划不需要任何额外的非线性相互作用和储层工程，并且可以抵抗热波动。由于其2D功能启用了多功能相互作用，因此，我们的系统丰富了腔体宏伟的实现，我们的系统在量子状态工程方面表现出了优势。
Cavity magnomechanics has become an ideal platform to explore macroscopic quantum effects. Bringing together magnons, phonons, and photons in a system, it opens many opportunities for quantum technologies. It was conventionally realized by an yttrium iron garnet, which exhibits a parametric magnon-phonon coupling $\hat{m}^†\hat{m}(\hat{b}^†+\hat{b})$, with $\hat{m}$ and $\hat{b}$ being the magnon and phonon modes. Inspired by the recent realization of two-dimensional (2D) magnets, we propose a cavity magnomechanical system using a 2D magnetic material with both optical and magnetic drivings. It features the coexisting photon-phonon radiation-pressure coupling and quadratic magnon-phonon coupling $\hat{m}^†\hat{m}(\hat{b}^†+\hat{b})^2$ induced by the magnetostrictive interaction. A stable squeezing of the phonon and bi- and tri-partite entanglements among the three modes are generated in the regimes with a suppressed phonon number. Compared with previous schemes, ours does not require any extra nonlinear interaction and reservoir engineering and is robust against the thermal fluctuation. Enriching the realization of cavity magnomechanics, our system exhibits its superiority in quantum-state engineering due to the versatile interactions enabled by its 2D feature.
