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Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate
Published on: September 13, 2019
Measuring Bipartite Spin Correlations of Lattice-Trapped Dipolar Atoms
Youssef Aziz Alaoui1,2, Sean R Muleady3,4,5,6, Edwin Chaparro3,4
1<a href="https://ror.org/0199hds37">Université Sorbonne Paris Nord</a>, <a href="https://ror.org/03n3yg876">Laboratoire de Physique des Lasers</a>, F-93430 Villetaneuse, France.
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.
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