论文标题
天空晶体中的磁电腔镁
Magnetoelectric Cavity Magnonics in Skyrmion Crystals
论文作者
论文摘要
我们提出了一种托有非中心对称磁体的腔中的磁电镁光子耦合的理论。磁电耦合类似于多表情中的非逆转现象，是时间反转和反转不对称的。这种不对称性为镁光子耦合的特殊可调节性提供了一种手段，可以通过逆转磁化方向来打开和关闭该耦合。以超级磁性阻尼为例，以多用量Skyrmion-host Cu $ _2 $ _3 $ _3 $ _3 $，我们揭示了Skyrmion eigenmodes的电活动，并提出了``磁性深色''椭圆形模式的磁蛋白 - 光量拆分。此外，我们预测磁性电动天空激发之间的腔诱导的镁麦克努尼耦合。我们通过提出有关全电磁介导的光子量子门的方案以及镁的光子介导的分裂操作来讨论量子信息处理中的应用。我们的研究强调了磁电腔镁作为实现量子混合系统的新平台，以及拓扑磁纹理中光子和镁之间的相干转导。
We present a theory of magnetoelectric magnon-photon coupling in cavities hosting noncentrosymmetric magnets. Analogously to nonreciprocal phenomena in multiferroics, the magnetoelectric coupling is time-reversal and inversion asymmetric. This asymmetry establishes a means for exceptional tunability of magnon-photon coupling, which can be switched on and off by reversing the magnetization direction. Taking the multiferroic skyrmion-host Cu$_2$OSeO$_3$ with ultralow magnetic damping as an example, we reveal the electrical activity of skyrmion eigenmodes and propose it for magnon-photon splitting of ``magnetically dark'' elliptic modes. Furthermore, we predict a cavity-induced magnon-magnon coupling between magnetoelectrically active skyrmion excitations. We discuss applications in quantum information processing by proposing protocols for all-electrical magnon-mediated photon quantum gates, and a photon-mediated SPLIT operation of magnons. Our study highlights magnetoelectric cavity magnonics as a novel platform for realizing quantum-hybrid systems and the coherent transduction between photons and magnons in topological magnetic textures.
