Enhancing Kondo Coupling in Alkaline-Earth Atomic Gases with Confinement-induced Resonances in Mixed Dimensions

Abstract

The Kondo effect describes the spin-exchanging interaction between localized impurity and the itinerant fermions. The ultracold alkaline-earth atomic gas provides a natural platform for quantum simulation of the Kondo model, utilizing its long-lived clock state and the nuclear-spin exchanging interaction between the clock state and the ground state. One of the key issue now is whether the Kondo temperature can be high enough to be reached in current experiment, for which we have proposed using a transverse confinement to confine atoms into a one-dimensional tube and to utilize the confinement-induced resonance to enhance the Kondo coupling. In this work, we further consider the $1+0$ dimensional scattering problem when the clock state is further confined by an axial harmonic confinement. We show that this axial confinement for the clock state atoms not only plays a role for localizing them, but also can act as an additional control knob to reach the confinement-induced resonance. We show that by combining both the transverse and the axial confinements, the confinement-induced resonance can be reached in the practical conditions and the Kondo effect can be attainable in this system.

arXiv comment6 pages, 5 figures

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Cited by in corpus (20)

• Non-Hermitian Kondo effect in ultracold alkaline-earth atoms
• Localized magnetic moments with tunable spin exchange in a gas of ultracold fermions
• Exploring the Kondo model in and out of equilibrium with alkaline-earth atoms
• Interaction Control of Ultracold Alkaline-Earth Atoms
• Phase diagram and dynamics of the SU($\mathbf{N}$) symmetric Kondo lattice model
• Observation of spin-exchange dynamics between itinerant and localized ${}^{171}\mathrm{Yb}$ atoms
• Resonant pair-exchange scattering and BCS-BEC crossover in a system composed of dispersive and heavy incipient bands: a Feshbach analogy
• Quasiexact Kondo Dynamics of Fermionic Alkaline-Earth-Like Atoms at Finite Temperatures
• Repulsive polarons in alkaline-earth(-like) atoms across an orbital Feshbach resonance
• Tight-Binding Kondo Model and Spin-Exchange Collision Rate of Alkaline-Earth Atoms in a Mixed-Dimensional Optical Lattice
• Efimov Enhanced Kondo Effect in Alkaline and Alkaline-Earth Atomic Gas Mixture
• Confinement Induced Resonance with Weak Bare Interaction in a Quasi 3+0 Dimensional Ultracold Gas
• Asymmetric Conductivity of the Kondo Effect in Cold Atomic Systems
• Confinement-Induced Resonance with Weak Background Interaction
• Few-body solutions under spin-exchange interaction: magnetic bound state and the Kondo screening effect
• Universal energy-dependent pseudopotential for the two-body problem of confined ultracold atoms
• Confinement-induced Resonance of Alkaline-earth-metal-like Atoms in Anisotropic Quasi-one-dimensional Traps
• Kondo Effect in a Spin-3/2 Fermi Gas
• Microscopic theory of the Hubbard interaction in low-dimensional optical lattices
• Laser Manipulation of Spin-Exchange Interaction Between Alkaline-Earth Atoms in ${}^1$S${}_0$ and ${}^3$P${}_2$ States