标题： 观察由原子阵列中诱导的相互作用拓扑相的结构无序现象 显示英文标题

标题： Observing structural disorder induced interacting topological phase in an atom array

摘要： 物质的拓扑相可以在无相互作用系统（如能带拓扑）或相互作用系统（如自旋模型）中出现，其定义特征通常对弱无序具有鲁棒性。 有趣的是，无序本身也可以诱导拓扑相——非相互作用系统的Anderson拓扑绝缘体就是一个典型例子。 迄今为止，关于无序诱导拓扑的研究仅限于能带拓扑。 在这里，我们报告了在填充一半的原子阵列中直接观察到由结构无序诱导的多体相互作用拓扑相，通过随机偏移形成晶格的镊子位置来实现结构无序，从而导致镊子限制单原子之间的波动长程偶极相互作用。 在无序配置中的基态简并度被检测并与规则晶格进行比较。 通过空间分辨的原子间关联函数对不同形式的二聚体组成进行了验证，证明了诱导的拓扑相。 通过探测高度激发态的淬火动力学，我们观察到边缘自旋磁化衰减明显慢于体自旋磁化，这与无序晶格中存在拓扑保护的边缘模式一致。 我们的实验为研究里德堡原子阵列中结构无序与强相互作用拓扑物质之间的相互作用开辟了一个新方向。 显示英文摘要

摘要： Topological phases of matter can appear in noninteracting systems, as in band topology, or interacting systems, such as in spin models, with their defining features typically robust against weak disorder. Intriguingly, disorder itself can also induce topological phases--exemplified by the Anderson topological insulator in noninteracting systems. Experimental studies on disorder induced topology have so far been limited to band topology. Here we report direct observations of structural disorder induced many-body interacting topological phase in an atom array at half-filling, whereby random offsets to tweezer locations forming a lattice implement structural disorder, causing fluctuating long-range dipolar interactions between tweezer confined single atoms. The ground state degeneracy in disordered configurations is detected and compared to a regular lattice. The induced topological phase is also vindicated by the spatially resolved atom-atom correlation functions for different forms of dimer compositions. By probing the quench dynamics of a highly excited state, we observe markedly slower decay of edge spin magnetization in comparison to the bulk spin one, consistent with the presence of topologically protected edge modes in disordered lattices. Our experiments open a new direction for studying the interplay between structural disorder and strongly interacting topological matter in Rydberg atom arrays.