Observing the Space- and Time-Dependent Growth of Correlations in Dynamically Tuned Synthetic Ising Models with Antiferromagnetic Interactions
By Vincent Lienhard, Sylvain de L'es'eleuc, D. Barredo, Thierry Lahaye, Antoine Browaeys, M. Schuler, L. Henry, A. Lauchli. Physical Review X, 2017
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We explore the dynamics of artificial one- and two-dimensional Ising-like quantum antiferromagnets with different lattice geometries by using a Rydberg quantum simulator of up to 36 spins in which we dynamically tune the parameters of the Hamiltonian. We observe a region in parameter space with antiferromagnetic (AF) ordering, albeit with only finite-range correlations. We study systematically the influence of the ramp speeds on the correlations and their growth in time. We observe a delay in their build-up associated to the finite speed of propagation of correlations in a system with short-range interactions. We obtain a good agreement between experimental data and numerical simulations taking into account experimental imperfections measured at the single particle level. Finally, we develop an analytical model, based on a short-time expansion of the evolution operator, which captures the observed spatial structure of the correlations, and their build-up in time.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/41e261994cc387f99b83802cb3f6cf6501feef8c
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Quantum simulation and computing with Rydberg-interacting qubits (2020, methodology): “These techniques have been used to realize deterministically loaded and almost defect-free quantum registers in different spatial geometries including 1D 35,41 , 2D 36,38,39,44,47,48,63,64 and 3D 37,65 arrays (see Fig.”