论文标题
Rydberg原子阵列中的封锁效应的复合旋转方法
Composite Spin Approach to the Blockade Effect in Rydberg Atom Arrays
论文作者
论文摘要
Rydberg封锁引起了Rydberg Atom阵列中的多体效应，包括丰富的地面阶段和激发谱中的多体疤痕状态。在这封信中，我们提出了一个复合旋转表示，可以为该系统中的主要功能提供统一的描述。复合旋转结合了Rydberg的激发和辅助费米子，这些激发被引入以自动实现Rydberg Blockade约束。首先，我们专注于描述一维阵列的PXP模型，而Rydberg阻塞半径是晶格间距。使用复合旋转，基态只是复合自旋的铁磁产物状态，这些复合材料旋转的磁化激发可以准确地描述多体疤痕状态并发出信号，并发出量子过渡的信号。然后，我们表明，具有不同阻塞半径的Rydberg原子阵列可以共享复合自旋表示的通用描述，并且可以在复合旋转的形成中吸收不同的封闭半径之间的差异。
The Rydberg blockade induces strongly correlated many-body effects in Rydberg atom arrays, including rich ground-state phases and many-body scar states in the excitation spectrum. In this letter, we propose a composite spin representation that can provide a unified description for major features in this system. The composite spin combines Rydberg excitation and the auxiliary fermions, which are introduced to implement the Rydberg blockade constraint automatically. First, we focus on the PXP model describing one-dimensional arrays with the Rydberg blocking radius being a lattice spacing. Using composite spins, the ground state is simply a ferromagnetic product state of composite spins, and the magnon excitations of these composite spins can accurately describe the many-body scar states and signal the quantum phase transition driven by detuning. Then, we show that Rydberg atom arrays with different blocking radii can share a universal description of the composite spin representation, and the difference between different blockade radii can be absorbed in the formation of composite spins.
