Density-dependent synthetic magnetism for ultracold atoms in optical lattices

Abstract

Raman-assisted hopping can allow for the creation of density-dependent synthetic magnetism for cold neutral gases in optical lattices. We show that the density-dependent fields lead to a non-trivial interplay between density modulations and chirality. This interplay results in a rich physics for atoms in two-leg ladders, characterized by a density-driven Meissner- to vortex-superfluid transition, and a non-trivial dependence of the density imbalance between the legs. Density-dependent fields also lead to intriguing physics in square lattices. In particular, it leads to a density-driven transition between a non-chiral and a chiral superfluid, both characterized by non-trivial charge density-wave amplitude. We finally show how the physics due to the density-dependent fields may be easily probed in experiments by monitoring the expansion of doublons and holes in a Mott insulator, which presents a remarkable dependence on quantum fluctuations.

5 pages, 4 figures

References in corpus (15)

• Many-Body Physics with Ultracold Gases
• The density-matrix renormalization group in the age of matrix product states
• Atomic Quantum Simulation of U(N) and SU(N) Non-Abelian Lattice Gauge Theories
• A cold-atom quantum simulator for SU(2) Yang-Mills lattice gauge theory
• Hidden order in 1D Bose insulators
• Rise and fall of hidden string order of lattice bosons
• Experimental demonstration of single-site addressability in a two-dimensional optical lattice
• Cold atom simulation of interacting relativistic quantum field theories
• Vortex and Meissner phases of strongly-interacting bosons on a two-leg ladder
• Simulating 2+1d Lattice QED with dynamical matter using ultracold atoms
• The Anyon Hubbard Model in One-Dimensional Optical Lattices
• Fermionization and bosonization of expanding 1D anyonic fluids
• Ground-state properties of hard-core anyons in one-dimensional optical lattices
• Exploring Unconventional Hubbard Models with Doubly Modulated Lattice Gases
• Propagation of a single hole defect in the one-dimensional Bose-Hubbard model

Cited by in corpus (21)

• Laughlin-like states in bosonic and fermionic atomic synthetic ladders
• Toolbox for Abelian lattice gauge theories with synthetic matter
• Engineering interactions and anyon statistics by multicolor lattice-depth modulations
• Interaction-Dependent Photon-Assisted Tunneling in Optical Lattices: A Quantum Simulator of Strongly-Correlated Electrons and Dynamical Gauge Fields
• Ground State Properties of the One-Dimensional Unconstrained Pseudo-Anyon Hubbard Model
• Staircase of crystal phases of hard-core bosons on the Kagome lattice
• Excitation of exciton-polariton vortices in pillar microcavities by a Gaussian beam
• Vortex patterns of atomic Bose-Einstein condensates in a density-dependent gauge potential
• Topological Phases of Fermionic Ladders with Periodic Magnetic Fields
• Resonant dynamics of strongly interacting SU($n$) fermionic atoms in a synthetic flux ladder
• Self-generated quantum gauge fields in arrays of Rydberg atoms
• Density-induced geometric frustration of ultra-cold bosons in optical lattices
• Enhanced repulsively bound atom pairs in topological optical lattice ladders
• Topological phases of lattice bosons with a dynamical gauge field
• Spin-gap spectroscopy in a bosonic flux ladder
• Hubbard models and state preparation in an optical Lieb lattice
• Flux enhanced localization and reentrant delocalization in the quench dynamics of two interacting bosons on a Bose-Hubbard ladder
• Flux induced re-entrant dynamics in the quantum walk of interacting bosons
• Few-to-many vortex states of density-angular-momentum coupled Bose-Einstein condensates
• Emergent magnetic order in the antiferromagnetic Kitaev model with a [111] field
• Excitation spectrum of vortex-lattice modes in a rotating condensate with a density-dependent gauge potential