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arXiv 2407.12752cond-mat.quant-gascond-mat.stat-mechquant-ph
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里德堡光镊阵列中的超固态

Supersolidity in Rydberg tweezer arrays

Lukas Homeier, Simon Hollerith, Sebastian Geier, Neng-Chun Chiu, Antoine Browaeys, Lode Pollet

AI总结:

本文提出结合两个里德堡态间偶极与范德华相互作用的方案,在光镊阵列中实现长程隧穿的扩展哈伯德模型,预测三角晶格上存在临界熵S/N≈0.19的稳健超固态相,并通过87Rb里德堡态对证明实验可行性,可在大尺度体系中研究其性质。

摘要:

里德堡光镊阵列是探索具有偶极XY或范德华伊辛ZZ相互作用的量子磁体的多功能平台。本文提出一种结合两个里德堡态之间偶极相互作用和范德华相互作用的方案,其中后者的振幅可大于前者,在光镊阵列中实现具有长程隧穿的扩展哈伯德模型。在具有排斥相互作用的三角晶格上,通过大规模量子蒙特卡洛模拟,我们预测存在一种稳健的超固态相,其每个粒子的临界熵S/N≈0.19,可在当前里德堡光镊实验中实现。我们进一步通过在87Rb中识别能实现所需相互作用的里德堡态对,证明了实验可行性。这种晶格超固态寿命长,在各向同性且平坦的二维几何结构中存在于宽参数范围内,可实现数百个粒子的体系,允许直接探测超固态的缺陷诱导图像。因此,其热力学和动力学性质可在比以往更大的尺度上进行研究。

英文摘要:

Rydberg tweezer arrays provide a versatile platform to explore quantum magnets with dipolar XY or van-der-Waals Ising ZZ interactions. Here, we propose a scheme combining dipolar and van-der-Waals interactions between two Rydberg states, where the amplitude of the latter can be greater than that of the former, realizing an extended Hubbard model with long-range tunnelings in optical tweezer arrays. On the triangular lattice with repulsive interactions, we predict the existence of a robust supersolid phase with a critical entropy per particle $S/N \approx 0.19$ accessible in current Rydberg tweezer experiments supported by large-scale quantum Monte Carlo simulations. We further demonstrate the experimental feasibility by identifying pairs of Rydberg states in ${}^{87}$Rb realizing the required interactions. Such a lattice supersolid is long-lived, found over a wide parameter range in an isotropic and flat two-dimensional geometry, and can be realized for 100s of particles allowing one to directly probe the defect-induced picture of supersolids. Its thermodynamical and dynamical properties can hence be studied at a far larger scale than hitherto possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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