Laser-induced Kondo effect in ultracold alkaline-earth fermions

Abstract

We demonstrate that laser excitations can coherently induce a novel Kondo effect in ultracold atoms in optical lattices. Using a model of alkaline-earth fermions with two orbitals, it is shown that the optically coupled two internal states are dynamically entangled to form the Kondo-singlet state, overcoming the heating effect due to the irradiation. Furthermore, a lack of SU($N$) symmetry in the optical coupling provides a peculiar feature in the Kondo effect, which results in spin-selective renormalization of effective masses. We also discuss effects of interorbital exchange interactions, and reveal that they induce novel crossover or reentrant behavior of the Kondo effect owing to control of the coupling anisotropy. The laser-induced Kondo effect is highly controllable by tuning the laser strength and the frequency, and thus offers a versatile platform to study the Kondo physics using ultracold atoms.

9 pages, 4 figures, published version

References in corpus (8)

• A one-dimensional liquid of fermions with tunable spin
• Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism
• Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
• An SU(N) Mott insulator of an atomic Fermi gas realized by large-spin Pomeranchuk cooling
• Degenerate Fermi Gases of Ytterbium
• Optical Flux Lattices for Ultracold Atomic Gases
• Direct observation of coherent inter-orbital spin-exchange dynamics
• Photo-induced states in a Mott insulator

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• Transport measurement of the orbital Kondo effect with ultracold atoms
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• Variational principle for quantum impurity systems in and out of equilibrium: application to Kondo problems
• Interaction Control of Ultracold Alkaline-Earth Atoms
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• Coqblin-Schrieffer Model for an Ultra-cold Gas of Ytterbium atoms with Metastable States
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• Quasiexact Kondo Dynamics of Fermionic Alkaline-Earth-Like Atoms at Finite Temperatures
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• Two-dimensional repulsive Fermi polarons with short and long-range interactions
• One-dimensional two-orbital SU(N) ultracold fermionic quantum gases at incommensurate filling: a low-energy approach
• Dissipative realization of Kondo models
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• Symmetry-protected topological phase transition in one-dimensional Kondo lattice and its realization with ultracold atoms
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• Kondo effect in a non-Hermitian, $\mathcal{P}\mathcal{T}$-symmetric Anderson model with Rashba spin-orbit coupling
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• Correlation versus dissipation in a non-Hermitian Anderson impurity model
• Simulating heavy fermion physics in optical lattice: Periodic Anderson model with harmonic trapping potential
• Kondo Length in Bosonic Lattices
• Engineering the Kondo impurity problem with alkaline-earth atom arrays
• Universal low energy physics in one-dimensional multicompnent Fermi gases with a strongly repulsive $\delta$-function interaction
• Proposal to directly observe the Kondo effect through enhanced photo-induced scattering of cold fermionic and bosonic atoms
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• Universal energy-dependent pseudopotential for the two-body problem of confined ultracold atoms
• Lieb-Schultz-Mattis constraints for the insulating phases of the one-dimensional SU($N$) Kondo lattice model
• Photoinduced dynamics of excitonic order and Rabi oscillation in the two-orbital Hubbard model
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• A fully controllable Kondo system: Coupling a flux qubit and an ultracold Fermi gas
• Laser Manipulation of Spin-Exchange Interaction Between Alkaline-Earth Atoms in ${}^1$S${}_0$ and ${}^3$P${}_2$ States
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