A strongly interacting gas of two-electron fermions at an orbital Feshbach resonance

Abstract

We report on the experimental observation of a strongly interacting gas of ultracold two-electron fermions with orbital degree of freedom and magnetically tunable interactions. This realization has been enabled by the demonstration of a novel kind of Feshbach resonance occurring in the scattering of two 173Yb atoms in different nuclear and electronic states. The strongly interacting regime at resonance is evidenced by the observation of anisotropic hydrodynamic expansion of the two-orbital Fermi gas. These results pave the way towards the realization of new quantum states of matter with strongly correlated fermions with orbital degree of freedom.

5 pages, 4 figures

References in corpus (8)

• Observation of Bose-Einstein Condensation of Molecules
• 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
• Direct observation of coherent inter-orbital spin-exchange dynamics
• Orbital Feshbach Resonance in Alkali-Earth Atoms
• A compact ultranarrow high-power laser system for experiments with 578nm Ytterbium clock transition

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