Tuning Feshbach resonance in cold atomic gases with inter-channel coupling

Abstract

We show that the essential properties of a Feshbach resonance in cold atomic gases can be tuned by dressing the atomic states in different scattering channels through inter-channel couplings. Such a scheme can be readily implemented in the orbital Feshbach resonance of alkaline-earth-like atoms by coupling hyperfine states in the clock-state manifolds. Using ${}^{173}$Yb atoms as an example, we find that both the resonance position and the two-body bound-state energy depend sensitively on the inter-channel coupling strength, which offers control parameters in tuning the inter-atomic interactions. We also demonstrate the dramatic impact of the dressed Feshbach resonance on many-body processes such as the polaron to molecule transition and the BCS-BEC crossover.

6 pages, 4 figures

References in corpus (18)

• Many body localization and thermalization in quantum statistical mechanics
• Atomic quantum gases in periodically driven optical lattices
• Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism
• Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
• Synthetic dimensions and spin-orbit coupling with an optical clock transition
• Spin-orbit coupled fermions in an optical lattice clock
• Ultra-cold Polarized Fermi Gases
• Direct observation of coherent inter-orbital spin-exchange dynamics
• Controlling a magnetic Feshbach resonance with laser light
• Spin-orbit coupled two-electron Fermi gases of ytterbium atoms
• Finite-Momentum Dimer Bound State in Spin-Orbit Coupled Fermi Gas
• Realization of SU(N) Kondo effect in strong magnetic field
• Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
• Topological Fulde-Ferrell states in alkaline-earth-metal-like atoms near an orbital Feshbach resonance
• Center-of-mass-momentum-dependent interaction between ultracold atoms
• Center of Mass Momentum Dependent Interaction Between Ultracold Atoms
• Tuning a magnetic Feshbach resonance with spatially modulated laser light
• Radio-Frequency Manipulation of Fano-Feshbach Resonances in an Ultracold Fermi Gas of ${}^{40}$K

Cited by in corpus (5)

• Interaction Control of Ultracold Alkaline-Earth Atoms
• Leggett collective excitations in a two-band Fermi superfluid at finite temperatures
• Frustrated orbital Feshbach resonances in a Fermi gas
• Bosonic Peierls state emerging from the one-dimensional Ising-Kondo interaction
• Fractal Quasicondensation in One Dimension