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首页> 外文期刊>Physical Review X >Observing the Space- and Time-Dependent Growth of Correlations in Dynamically Tuned Synthetic Ising Models with Antiferromagnetic Interactions
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Observing the Space- and Time-Dependent Growth of Correlations in Dynamically Tuned Synthetic Ising Models with Antiferromagnetic Interactions

机译:在具有反铁磁相互作用的动态调谐合成型模型中观察动态调谐合成型模型的空间和时间依赖性生长

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We explore the dynamics of artificial one- and two-dimensional Ising-like quantum antiferromagnets with different lattice geometries by using a Rydberg quantum simulator of up to 36 spins in which we dynamically tune the parameters of the Hamiltonian. We observe, in a region in parameter space, the onset of antiferromagnetic (AF) ordering, albeit with only finite-range correlations. We study systematically the influence of the ramp speeds on the correlations and their growth in time. We observe a delay in their buildup associated to the finite speed of propagation of correlations in a system with short-range interactions. We obtain a good agreement between experimental data and numerical simulations, taking into account experimental imperfections measured at the single-particle level. Finally, we develop an analytical model, based on a short-time expansion of the evolution operator, which captures the observed spatial structure of the correlations, and their buildup in time.
机译:我们通过使用多达36个旋转的Rydberg量子模拟器探讨用不同的晶格几何形状的人工单位和二维型量子反霉铁的动态,其中我们动态调整哈密顿人的参数。我们观察在参数空间的区域中,反铁磁(AF)排序的开始,尽管仅具有有限范围的相关性。我们系统地研究了斜坡速度对相关性及其增长的影响。我们遵守与具有短程交互中的系统中的相关性的有限速度相关的构建延迟。我们在实验数据和数值模拟之间获得了良好的一致性,考虑到在单粒子水平上测量的实验缺陷。最后,我们基于进化算子的短时间扩展,开发了一个分析模型,其捕获了所观察到的相关性的空间结构,以及它们及时的积累。

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