Cooling Atomic Gases With Disorder

Abstract

Cold atomic gases have proven capable of emulating a number of fundamental condensed matter phenomena including Bose-Einstein condensation, the Mott transition, Fulde-Ferrell-Larkin-Ovchinnikov pairing and the quantum Hall effect. Cooling to a low enough temperature to explore magnetism and exotic superconductivity in lattices of fermionic atoms remains a challenge. We propose a method to produce a low temperature gas by preparing it in a disordered potential and following a constant entropy trajectory to deliver the gas into a non-disordered state which exhibits these incompletely understood phases. We show, using quantum Monte Carlo simulations, that we can approach the Neél temperature of the three-dimensional Hubbard model for experimentally achievable parameters. Recent experimental estimates suggest the randomness required lies in a regime where atom transport and equilibration are still robust.

5 figures, supplement with 5 figures

References in corpus (13)

• Observation of many-body localization of interacting fermions in a quasi-random optical lattice
• Direct observation of Anderson localization of matter-waves in a controlled disorder
• Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• Strongly interacting bosons in a disordered optical lattice
• Species-specific optical lattices
• Thermodynamics of the 3D Hubbard model on approach to the Neel transition
• Geometry Dependence of the Sign Problem
• Compressibility of a fermionic Mott insulator of ultracold atoms
• Interaction-Induced Adiabatic Cooling for Antiferromagnetism in Optical Lattices
• Nuclear magnetic resonance in the heavy fermion superconductors
• Enlarging and cooling the Néel state in an optical lattice
• Using off-diagonal confinement as a cooling method

Cited by in corpus (18)

• Cooling and thermometry of atomic Fermi gases
• A correlated Anderson insulator on the honeycomb lattice
• Phase transitions in partial summation methods: Results from the 3D Hubbard model
• Properties of the Superfluid in the Disordered Bose-Hubbard Model
• Inducing a metal-insulator transition in disordered interacting Dirac fermion systems via an external magnetic field
• Disorder-dependent superconducting pairing symmetry in doped graphene
• Thermodynamics of the disordered Hubbard model studied via numerical linked-cluster expansions
• Provable bounds for the Korteweg-de Vries reduction in multi-component Nonlinear Schrodinger Equation
• Thermal Entropy, Density Disorder and Antiferromagnetism of Repulsive Fermions in 3D Optical Lattice
• Hierarchical dimensional crossover of an optically-trapped quantum gas with disorder
• Cooling Fermions in an Optical Lattice by Adiabatic Demagnetization
• Interplay of disorder and interactions in the bilayer band-insulator : A determinant quantum Monte Carlo study
• Cooling Quantum Gases with Entropy Localization
• Electronic interactions in a vacancy-engineered honeycomb lattice: Transition from a nodal-line semimetal to a magnetic insulator
• Magnetic phase transition in disordered interacting Dirac fermion systems via the Zeeman field
• Disappearance of Quasiparticles in a Bose Lattice Gas
• Interaction-Induced Gradients Across a Confined Fermion Lattice
• Density redistribution effects in fermionic optical lattices