Thermometry for a Kagome Lattice Dipolar Rydberg Simulator

TL;DR

This paper introduces a precise thermometry method for Rydberg atom arrays using correlation and susceptibility data combined with high-temperature expansion, applied to Kagome lattice experiments.

Contribution

It presents a novel thermometry technique that enhances temperature measurement accuracy in quantum simulations of dipolar spin models.

Findings

Estimated temperature T=0.55J in the Kagome lattice experiment.

Determined entropy S/N=0.67 ln2, indicating the system is not yet in the quantum spin liquid regime.

Method shows potential for guiding future experimental efforts.

Abstract

We propose an accurate thermometry approach for Rydberg atom tweezer arrays combining data from correlation and local susceptibility measurements with a theoretical high-temperature expansion method for dynamic spin correlations. We apply our approach to a recent quantum simulation experiment [Bornet et al., arXiv 2602.14323] realizing an anti-ferromagnetic dipolar spin-1/2 XY model on the Kagome lattice. We obtain T=0.55J and S/N=0.67 ln2 for temperature and entropy respectively, showing that further experimental efforts are required to reach the putative quantum spin liquid regime.