Interaction Spectroscopy of a Two-component Mott Insulator

Abstract

We prepare and study a two-component Mott insulator of bosonic atoms with two particles per site. The mapping of this system to a magnetic spin model, and the subsequent study of its quantum phases, require a detailed knowledge of the interaction strengths of the two components. In this work, we use radio frequency (RF) transitions and an on-site interaction blockade for precise, empirical determination of the interaction strengths of different combinations of hyperfine states on a single lattice site. We create a map of the interactions of the lowest two hyperfine states of ${}^7$Li as a function of magnetic field, including measurements of several Feshbach resonances with unprecedented sensitivity, and we identify promising regions for the realization of magnetic spin models.

References in corpus (21)

• Feshbach Resonances in Ultracold Gases
• Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
• Experimental realization of a long-range antiferromagnet in the Hubbard model with ultracold atoms
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• Observation of Spatial Charge and Spin Correlations in the 2D Fermi-Hubbard Model
• Phase diagram of two-component bosons on an optical lattice
• Universality in Three- and Four-Body Bound States of Ultracold Atoms
• Extreme tunability of interactions in a ${}^7$Li Bose-Einstein condensate
• Imaging the Mott Insulator Shells using Atomic Clock Shifts
• Observation of canted antiferromagnetism with ultracold fermions in an optical lattice
• Dynamics and Thermodynamics of the Low-Temperature Strongly Interacting Bose Gas
• Excitations of a Superfluid in a 3D Optical Lattice
• Orbital excitation blockade and algorithmic cooling in quantum gases
• Microscopic derivation of Hubbard parameters for cold atomic gases
• Quenching the Haldane gap in spin-1 Heisenberg antiferromagnets
• Study of Efimov physics in two nuclear-spin sublevels of 7Li
• Preparation and spectroscopy of a metastable Mott insulator state with attractive interactions
• Three-body recombination at vanishing scattering lengths in an ultracold Bose gas
• All-optical production of 7Li Bose-Einstein condensation using Feshbach resonances
• Adiabatic cooling of bosons in lattices to magnetic ordering
• Observation of two-beam collective scattering phenomena in a Bose-Einstein condensate

Cited by in corpus (13)

• Spin transport in a tunable Heisenberg model realized with ultracold atoms
• Catching Bethe phantoms and quantum many-body scars: Long-lived spin-helix states in Heisenberg magnets
• Universal dimerized quantum droplets in a one-dimensional lattice
• Enhanced Superexchange in a Tilted Mott Insulator
• Multichannel interactions of two atoms in an optical tweezer
• Site-Resolved Imaging of Bosonic Mott Insulator of ${}^7$Li atoms
• Driven-dissipative control of cold atoms in tilted optical lattices
• ${\mathbb{Z}}_2$ phases and Majorana spectroscopy in paired Bose-Hubbard chains
• High-precision analysis of Feshbach resonances in a Mott insulator
• Emerging (2+1)D massive graviton in graphene-like systems
• Nonlocal order parameter of pair superfluids
• Control, competition and coexistence of effective magnetic orders by interactions in Bose-Einstein condensates with high-Q cavities
• Lellouch-Lüscher relation for ultracold few-atom systems under confinement