拓扑(电路)
拓扑序
拓扑绝缘体
里德堡原子
无定形固体
对称保护拓扑序
拓扑缺陷
物理
相变
凝聚态物理
里德伯公式
材料科学
量子
量子力学
结晶学
化学
电离
离子
组合数学
数学
作者
Kai Li,Jiong-Hao Wang,Yan-Bin Yang,Yong Xu
标识
DOI:10.1103/physrevlett.127.263004
摘要
Recent theoretical studies predict that structural disorder, serving as a bridge connecting a crystalline material to an amorphous material, can induce a topological insulator from a trivial phase. However, to experimentally observe such a topological phase transition is very challenging due to the difficulty in controlling structural disorder in a quantum material. Given experimental realization of randomly positioned Rydberg atoms, such a system is naturally suited to studying structural disorder induced topological phase transitions and topological amorphous phases. Motivated by the development, we study topological phases in an experimentally accessible one-dimensional amorphous Rydberg atom chain with random atom configurations. In the single-particle level, we find symmetry-protected topological amorphous insulators and a structural disorder induced topological phase transition, indicating that Rydberg atoms provide an ideal platform to experimentally observe the phenomenon using state-of-the-art technologies. Furthermore, we predict the existence of a gapless symmetry-protected topological phase of interacting bosons in the experimentally accessible system. The resultant many-body topological amorphous phase is characterized by a $\mathbb{Z}_2$ invariant.
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