论文标题
与激光辅助偶极 - 偶极相互作用的rydberg原子的量子厅状态
Quantum Hall states for Rydberg atoms with laser-assisted dipole-dipole interactions
论文作者
论文摘要
带有偶极偶极相互作用的Rydberg原子提供了有趣的平台，以探索异国情调的量子多体物理学。在这里，我们提出了一种具有激光辅助偶极 - 偶极相互作用的新方案，以在二维阵列构型中实现Rydberg原子的合成磁场，从而产生了异国的骨拓扑状态。在存在外部有效的Zeeman分裂梯度的情况下，沿相邻的Rydberg原子沿梯度方向之间的偶极 - 偶极相互作用被抑制，但是当应用拉曼灯以补偿能量差时，可以协助。使用此方案，我们为复杂的自旋交换耦合模型生成了一个可控的均匀磁场，可以将其映射到硬核玻色子与外部合成磁场耦合。然后获得了高度可调的硬核玻色子的平坦CHERN带，此外，可以通过实验性可行性实现玻体分数量子霍尔状态。这项工作为使用Rydberg Atoms实现了高度的玻体拓扑订单开辟了一条途径。
Rydberg atoms with dipole-dipole interactions provide intriguing platforms to explore exotic quantum many-body physics. Here we propose a novel scheme with laser-assisted dipole-dipole interactions to realize synthetic magnetic field for Rydberg atoms in a two-dimensional array configuration, which gives rise to the exotic bosonic topological states. In the presence of an external effective Zeeman splitting gradient, the dipole-dipole interaction between neighboring Rydberg atoms along the gradient direction is suppressed, but can be assisted when Raman lights are applied to compensate the energy difference. With this scheme we generate a controllable uniform magnetic field for the complex spin-exchange coupling model, which can be mapped to hard core bosons coupling to an external synthetic magnetic field. The highly tunable flat Chern bands of the hard core bosons are then obtained and moreover, the bosonic fractional quantum Hall states can be achieved with experimental feasibility. This work opens an avenue for the realization of the highly-sought-after bosonic topological orders using Rydberg atoms.
