Measuring bipartite spin correlations of lattice-trapped dipolar atoms

• URL: http://arxiv.org/abs/2404.10531v1
• Date: Tue, 16 Apr 2024 12:57:41 GMT
• Title: Measuring bipartite spin correlations of lattice-trapped dipolar atoms
• Authors: Youssef Aziz Alaoui, Sean R. Muleady, Edwin Chaparro, Youssef Trifa, Ana Maria Rey, Tommaso Roscilde, Bruno Laburthe-Tolra, Laurent Vernac,
• Abstract summary: We use 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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