Probing the Quench Dynamics of Antiferromagnetic Correlations in a 2D Quantum Ising Spin System

Elmer Guardado-Sanchez, Peter T. Brown, Debayan Mitra, Trithep Devakul, David A. Huse, Peter Schauß, Waseem S. Bakr

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139 Scopus citations


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 quench dynamics in a two-dimensional Ising spin system with transverse and longitudinal fields. 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 antiferromagnetic correlations in the system after a sudden quench from a paramagnetic state and compare our measurements to numerical calculations using state-of-the-art techniques. We achieve many-body states with longer-range antiferromagnetic correlations by implementing a near-adiabatic quench of the longitudinal field and study the buildup of correlations as we vary the rate with which we change the field.

Original languageEnglish (US)
Article number021069
JournalPhysical Review X
Issue number2
StatePublished - Jun 18 2018

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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