在光学环形谐振器中实现 SSH 模型

Alexis Hotte-Kilburn, Pablo Bianucci
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引用次数: 0

摘要

近来,在光学系统中实施具有拓扑特征的物理模型备受关注。特别是片上集成光子学平台,它是一种前景广阔的平台,使我们能够利用拓扑稳健模式的优势,抵御不可避免的制造缺陷。在此,我们提议利用电磁模拟定量研究叠加在光环谐振器中的 SSH 模型。我们感兴趣的是在环中引入拓扑相变时出现的局部态。特别是,我们研究了拓扑保护模式在周围晶格发生随机变形时保持其特性的程度。我们发现,当系统中引入少量无序时,这些模式仍能保持其特性。我们还研究了局部态的损耗机制,区分了对邻近波导和辐射的损耗,发现拓扑保护只适用于前者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implementation of the SSH model in an optical ring resonator
The implementation of physical models with topological features in optical systems has garnered much attention in recent times. In particular, on-chip integrated photonics platforms are promising platforms enabling us to take advantage of the promise of topologically robust modes against inevitable fabrication defects. Here, we propose to study the SSH model superimposed in an optical ring resonator in a quantitative way using electromagnetic simulations. We are interested in lhe localized states that appear when a topological phase transition is introduced into the ring. In particular, we examine the extent to which topologically protected modes maintain their properties in the presence of random deformations in the surrounding lattice. We find that the modes maintain their properties when small amounts of disorder are introduced into the system. We also study loss mechanisms in the localized states, distinguishing between losses to the adjacent waveguide and to radiation, finding that the topological protection only applies to the former.
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