Accurate Mapping of Multilevel Rydberg Atoms on Interacting Spin-1/2 Particles for the Quantum Simulation of Ising Models
Accurate Mapping of Multilevel Rydberg Atoms on Interacting Spin-1/2 Particles for the Quantum Simulation of Ising Models
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DOI：
10.1103/physrevlett.120.113602
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发表时间：
2018-03-16
影响因子：
8.6
通讯作者：
Browaeys, Antoine
中科院分区：
文献类型：
--
作者：
de Leseleuc, Sylvain;Weber, Sebastian;Browaeys, Antoine
我们研究了一个激光驱动到ND(3/2)里德堡态的原子系统，并评估了它们被映射到自旋1/2粒子上用于各向异性伊辛磁体的量子模拟的精度。通过对电场和磁场作用下两个原子间相互作用势的非微扰计算，我们强调了谨慎选择实验参数的重要性，以维持里德堡阻塞，避免激发不必要的里德堡态。我们将这些理论观测与使用两个原子的实验相比较。最后，我们表明，在这些条件下，在失超后观察到的实验动力学与自旋1/2伊辛模型在多达49个自旋的系统中的数值模拟是一致的，对于这些系统，数值模拟变得困难。
We study a system of atoms that are laser driven to nD(3/2) Rydberg states and assess how accurately they can be mapped onto spin-1/2 particles for the quantum simulation of anisotropic Ising magnets. Using nonperturbative calculations of the pair potentials between two atoms in the presence of electric and magnetic fields, we emphasize the importance of a careful selection of experimental parameters in order to maintain the Rydberg blockade and avoid excitation of unwanted Rydberg states. We benchmark these theoretical observations against experiments using two atoms. Finally, we show that in these conditions, the experimental dynamics observed after a quench is in good agreement with numerical simulations of spin-1/2 Ising models in systems with up to 49 spins, for which numerical simulations become intractable.