论文标题
光磁性晶体的设计：朝着微观尺度上的最佳镁光子模式匹配
Design of an optomagnonic crystal: towards optimal magnon-photon mode matching at the microscale
论文作者
论文摘要
我们提出了基于磁电介质的光磁晶体的概念：在微观上进行了定期模式的结构，该磁电介质可以将磁棒和光子模式共定位。小体积的共定位可以导致单个量子级别的光子 - 马格诺耦合值，从而为这些系统打开了量子信息处理和量子转换方案的观点。从理论上讲，我们研究了一个简单的几何形状，该几何形状由一维漏洞和突然缺陷的孔组成，考虑到Ferrimagnet Yttrium Iron Garnet（YIG）是基本材料。我们表明，镁和光子模式都可以定位在缺陷处，并使用对称参数选择最佳模式，以最大程度地提高耦合。我们表明，在此几何形状中可以实现KHz范围内的光磁耦合，并讨论可能的优化途径，以提高耦合强度和光损耗。
We put forward the concept of an optomagnonic crystal: a periodically patterned structure at the microscale based on a magnetic dielectric, which can co-localize magnon and photon modes. The co-localization in small volumes can result in large values of the photon-magnon coupling at the single quanta level, which opens perspectives for quantum information processing and quantum conversion schemes with these systems. We study theoretically a simple geometry consisting of a one-dimensional array of holes with an abrupt defect, considering the ferrimagnet Yttrium Iron Garnet (YIG) as the basis material. We show that both magnon and photon modes can be localized at the defect, and use symmetry arguments to select an optimal pair of modes in order to maximize the coupling. We show that an optomagnonic coupling in the kHz range is achievable in this geometry, and discuss possible optimization routes in order to improve both coupling strengths and optical losses.
