Probing the Quench Dynamics of Antiferromagnetic Correlations in a 2D Quantum Ising Spin System
By Elmer Guardado-Sanchez, P. Brown, D. Mitra, Trithep Devakul, D. Huse, P. Schauss, W. Bakr. Physical Review X, 2017
159 citations recorded by the source corpus.
Simulating the real-time evolution of quantum spin systems far out of equilibrium poses a major theoretical challenge, especially in more than one dimension. We experimentally explore the dynamics of a two-dimensional Ising spin system with transverse and longitudinal fields as we quench it across a quantum phase transition from a paramagnet to an antiferromagnet. We realize the system with a near unit-occupancy atomic array of over 200 atoms obtained by loading a spin-polarized band insulator of fermionic lithium into an optical lattice and induce short-range interactions by direct excitation to a low-lying Rydberg state. Using site-resolved microscopy, we probe the correlations in the system after a sudden quench from the paramagnetic state and compare our measurements to exact calculations in the regime where it is possible. We achieve many-body states with longer-range antiferromagnetic correlations by implementing a near-adiabatic quench and study the buildup of correlations as we cross the quantum phase transition at different rates.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/fab81c55fa3c295b50221e433c0f9a3a82b5d25a
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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.”
- Many-body physics with individually controlled Rydberg atoms (2020, background): “of atoms after adiabatic preparation for the experiment of [83] (left) and [84] (right).”