Nonequilibrium Quantum Magnetism in a Dipolar Lattice Gas

2013/06/14 by A. Gil de Paz, Aurelie de Paz, Arijit Sharma +15 · 257 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Degenerate energy levels #Dipole #Electron #Lattice (music) #Magnetism #Optical lattice #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum spin liquid #Spin engineering #Spin polarization #Superfluidity #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.111.185305

published in Physical Review Letters 111(18), 185305 (American Physical Society) · 10 pages, 5+5 figures

arxiv created 2013/06/14 · openalex publication_date 2013/10/30 · arxiv updated 2015/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report on the realization of quantum magnetism using a degenerate dipolar gas in an optical lattice. Our system implements a lattice model resembling the celebrated t-J model. It is characterized by a nonequilibrium spinor dynamics resulting from intersite Heisenberg-like spin-spin interactions provided by nonlocal dipole-dipole interactions. Moreover, due to its large spin, our chromium lattice gases constitute an excellent environment for the study of quantum magnetism of high-spin systems, as illustrated by the complex spin dynamics observed for doubly occupied sites.

Citations

• Many-body physics with ultracold gases
• Color Superfluidity and “Baryon” Formation in Ultracold Fermions
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Dipolar relaxation in an ultra-cold gas of magnetically trapped chromium atoms
• Controlled exchange interaction between pairs of neutral atoms in an optical lattice
• Einstein–de Haas Effect in Dipolar Bose-Einstein Condensates
• Quantum Degenerate Dipolar Fermi Gas
• Spinor Bose gases: Symmetries, magnetism, and quantum dynamics

Cited by

• Hidden magnetism in periodically modulated one dimensional dipolar fermions
• Dark Superradiance in Cavity-Coupled Polar Molecular Bose-Einstein Condensates
• Superfluidity and solid order in a two-component Bose gas with dipolar interactions in an optical lattice
• Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions
• Observing the Space- and Time-Dependent Growth of Correlations in Dynamically Tuned Synthetic Ising Models with Antiferromagnetic Interactions
• Bounding the finite-size error of quantum many-body dynamics simulations
• Quantum correlations and entanglement in far-from-equilibrium spin systems
• Tuning the Dipole-Dipole Interaction in a Quantum Gas with a Rotating Magnetic Field
• Probing the Quench Dynamics of Antiferromagnetic Correlations in a 2D Quantum Ising Spin System
• Nanoscale “Dark State” Optical Potentials for Cold Atoms
• Frustrated Magnetism of Dipolar Molecules on a Square Optical Lattice: Prediction of a Quantum Paramagnetic Ground State
• Nonequilibrium phase transition in an open quantum spin system with long-range interaction
• Quantum dilute droplets of dipolar bosons at finite temperature

Related

• Probing Coherences and Itinerant Magnetism in a Dipolar Lattice Gas
• Dipolar physics: a review of experiments with magnetic quantum gases
• Coherent multi-flavour spin dynamics in a fermionic quantum gas
• Realizing a lattice spin model with polar molecules
• Strongly interacting ultracold polar molecules