Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Physical review. X, 2018-06, Vol.8 (2), p.021069, Article 021069

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.