Is it possible to access the strongly interacting regime with a $^6$Li$^{40}$K Fermi-Fermi mixture?

ORAL

Abstract

Interspecies Feshbach resonances in the $^6$Li$^{40}$K Fermi-Fermi mixture are closed-channel dominated and quite narrow. With the goal to realize a strongly interacting mixture we have measured the elastic and inelastic scattering properties across one of the widest interspecies resonances available in this system. Our results identify the narrow magnetic field range where the scattering length exceeds the interparticle spacing. We report on our first experimental steps exploring this strongly interacting regime.

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Authors

  • Andreas Trenkwalder

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Christoph Kohstall

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Frederik Spiegelhalder

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Devang Naik

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Gerhard Hendl

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Florian Schreck

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria

  • Rudolf Grimm

    • Inst. for Quantum Optics and Quantum Information, Austrian Acad. of Sciences, and Inst. of Experimental Physics, Innsbruck Univ., Innsbruck, Austria