论文标题
非阿布尔拓扑费和散装对应关系的实验观察
Experimental observation of non-Abelian topological charges and bulk-edge correspondence
论文作者
论文摘要
在过去的几十年中，拓扑概念已经出现了，以对金兹堡 - 兰道对称性范式超出范式进行分类。基本的全球不变性通常以整数（例如Chern或绕组数字）为特征。最近，已经提出了以非亚伯式拓扑费用为特征的乐队拓扑结构，该拓扑是具有非共同且富有成果的编织结构，其多个（> 1）带镜头缠在一起。尽管包括量子计算在内的许多潜在的精美应用，但尚未据报道非亚洲拓扑费的实验性观察。在这里，我们通过实验观察到PT（平等和时间反转）对称系统中的非亚伯拓扑电荷。更重要的是，我们提出了非亚洲散装对应关系，其中发现边缘状态是通过非亚伯指控描述的。我们的作品为非亚伯式拓扑阶段的表征和操纵打开了大门。
In the past decades, topological concepts have emerged to classify matter states beyond the Ginzburg-Landau symmetry breaking paradigm. The underlying global invariants are usually characterized by integers, such as Chern or winding numbers. Very recently, band topology characterized by non-Abelian topological charges has been proposed, which possess non-commutative and fruitful braiding structures with multiple (>1) bandgaps entangled together. Despite many potential exquisite applications including quantum computations, no experimental observation of non-Abelian topological charges has been reported. Here, we experimentally observe the non-Abelian topological charges in a PT (parity and time-reversal) symmetric system. More importantly, we propose non-Abelian bulk-edge correspondence, where edge states are found to be described by non-Abelian charges. Our work opens the door towards non-Abelian topological phase characterization and manipulation.
