Measuring Bipartite Spin Correlations of Lattice-Trapped Dipolar Atoms

We demonstrate a bipartition technique using a superlattice 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 anticorrelations 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 semiclassical 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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Publication Details

Journal
Physical Review Letters
Published
2024-11-13
DOI
https://doi.org/10.1103/physrevlett.133.203401
Citations
2
Primary Topic
Quantum many-body systems
Type
article
Field-Weighted Citation Impact
0.68

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article

Measuring Bipartite Spin Correlations of Lattice-Trapped Dipolar Atoms

Edwin Chaparro, Tommaso Roscilde, Sean R. Muleady, Youssef Aziz Alaoui et al.
2 citations
Physical Review Letters
Quantum many-body systems
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article

Measuring Bipartite Spin Correlations of Lattice-Trapped Dipolar Atoms

Edwin Chaparro, Tommaso Roscilde, Sean R. Muleady, Youssef Aziz Alaoui, Ana María Rey, L. Vernac, Youssef Trifa, B. Laburthe-Tolra
article en
2 citations

Abstract

We demonstrate a bipartition technique using a superlattice 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 anticorrelations 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 semiclassical 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.

Physical Review LettersVol. 133(20)
Université Claude Bernard Lyon 1 (FR), École Normale Supérieure de Lyon (FR), University of Colorado System (US), Sorbonne Université (FR), Université Sorbonne Paris Nord (FR), Laboratoire de physique des lasers (FR), University of Maryland, College Park (US)
National Science Foundation, Agence Nationale de la Recherche, Ministry of Education, Culture, Sports, Science and Technology, Narodowe Centrum Nauki, QuantERA, Multidisciplinary University Research Initiative, Air Force Office of Scientific Research
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Openalex Percentile: Top 34%
Quantum many-body systems
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