Measuring bipartite spin correlations of lattice-trapped dipolar atoms
Abstract
We demonstrate a bipartition technique using a super-lattice architecture to access correlations between alternating planes of a mesoscopic array of spin-3 chromium atoms trapped in a 3D optical lattice. Using this method, we observe that out-of-equilibrium dynamics driven by long-range dipolar interactions lead to spin anti-correlations between the two spatially separated subsystems. Our bipartite measurements reveal a subtle interplay between the anisotropy of the 3D dipolar interactions and that of the lattice structure, without requiring single-site addressing. We compare our results to theoretical predictions based on a truncated cumulant expansion and a new cluster semi-classical method that we use to investigate correlations at the microscopic scale. Comparison with a high-temperature analytical model reveals quantum thermalization at a high negative spin temperature.
Keywords
Cite
@article{arxiv.2404.10531,
title = {Measuring bipartite spin correlations of lattice-trapped dipolar atoms},
author = {Youssef Aziz Alaoui and Sean R. Muleady and Edwin Chaparro and Youssef Trifa and Ana Maria Rey and Tommaso Roscilde and Bruno Laburthe-Tolra and Laurent Vernac},
journal= {arXiv preprint arXiv:2404.10531},
year = {2024}
}
Comments
Main article: 5 pages, 3 Figures Supp Mat: 4 pages, 3 Figures