Strongly Interacting Gas of Two-Electron Fermions at an Orbital Feshbach Resonance

Physical Review Letters
G PaganoL Fallani

Abstract

We report on the experimental observation of a strongly interacting gas of ultracold two-electron fermions with an 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 ^{173}Yb 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 an orbital degree of freedom.

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Citations

Dec 1, 2018·Physical Review Letters·Masaya NakagawaMasahito Ueda
Jan 1, 2018·New Journal of Physics·Daniel GrussMichael Zwolak
Mar 2, 2019·Physical Review Letters·Jeong Ho HanY Shin
Oct 22, 2019·Physical Review Letters·Kazuki YamamotoNorio Kawakami
Dec 9, 2017·Physical Review Letters·Xiaofan ZhouSuotang Jia
May 31, 2019·Physical Review Letters·N Darkwah OppongS Fölling
Nov 16, 2019·Scientific Reports·Tsuneya YoshidaYasuhiro Hatsugai
Dec 8, 2016·Physical Review Letters·L F LiviL Fallani
Oct 10, 2020·Physical Review Letters·Haydn S AdlongJesper Levinsen
Aug 17, 2021·Physical Review Letters·Kazuki YamamotoNorio Kawakami

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