论文标题
Rydberg原子中分数Chern绝缘子的实验可访问方案
Experimentally accessible scheme for a fractional Chern insulator in Rydberg atoms
论文作者
论文摘要
我们介绍了用Rydberg原子进行设置，以实现人造物质中的骨值分数Chern绝缘子。建议的设置依赖于在蜂窝晶格中排列的Rydberg原子，在该原子中，偶极交换相互作用的激发跳过晶格，可以解释为硬核玻色子。量子多体汉密尔顿量在精确的对角和DMRG中进行了研究。我们确定实验可访问的参数，其中所有签名都表示与$ν= 1/2 $ bosonic lughlin态的拓扑特性相同的分数状态的外观。我们展示了一种绝热的横斜程序，该程序允许在有限的系统中制备拓扑状态，并为分数激发提供了实验可访问的吸烟枪标志。
We present a setup with Rydberg atoms for the realization of a bosonic fractional Chern insulator in artificial matter. The suggested setup relies on Rydberg atoms arranged in a honeycomb lattice, where excitations hop through the lattice by dipolar exchange interactions, and can be interpreted as hard-core bosons. The quantum many-body Hamiltonian is studied within exact diagonalization and DMRG. We identify experimentally accessible parameters where all signatures indicate the appearance of a fractional state with the same topological properties as the $ν=1/2$ bosonic Laughlin state. We demonstrate an adiabatic ramping procedure, which allows for the preparation of the topological state in a finite system, and demonstrate an experimentally accessible smoking gun signature for the fractional excitations.
