论文标题
光学手性多层中的Bloch型光子天际
Bloch-type photonic skyrmions in optical chiral multilayers
论文作者
论文摘要
磁性天空是磁场中的拓扑清理。直到最近，作为他们的光子对应物之一，在表面等离子体极性子中发现了Néel型光子天空。光子天空的深入波长特征表明它们在量子技术和数据存储中的潜力。到目前为止，在这个全新的研究领域尚未证明Bloch型光子Skyrmion。在这里，通过利用多层结构中等离子光学涡流的量子自旋大厅效应，我们预测了手性材料中光子扭曲的néel-和bloch型天空的存在。他们的手性依赖性特征可以被视为用于未来手性感应，信息处理和存储技术的额外自由度。特别是，我们的发现扩大了光子天空的家族，并在两个看似遥远的领域中揭示了手性材料的特征非常相似：光子天空和磁性天空。
Magnetic skyrmions are topological quasiparticles in magnetic field. Until recently, as one of their photonic counterparts, Néel-type photonic skyrmion is discovered in surface plasmon polaritons. The deep-subwavelength features of the photonic skyrmions suggest their potentials in quantum technologies and data storage. So far, the Bloch-type photonic skyrmion has yet to be demonstrated in this brand new research field. Here, by exploiting the quantum spin Hall effect of a plasmonic optical vortex in multilayered structure, we predict the existence of photonic twisted-Néel- and Bloch-type skyrmions in chiral materials. Their chirality-dependent features can be considered as additional degrees-of-freedom for future chiral sensing, information processing and storage technologies. In particular, our findings enlarge the family of photonic skyrmions and reveal a remarkable resemblance of the feature of chiral materials in two seemingly distant fields: photonic skyrmions and magnetic skyrmions.
