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Realization of a Strongly Interacting Fermi Gas of Dipolar Atoms

2018; American Physical Society; Volume: 121; Issue: 9 Linguagem: Inglês

10.1103/physrevlett.121.093602

1092-0145

Simon Baier, Daniel Petter, Jan Hendrik Becher, A. Patscheider, G. Natale, Lauriane Chomaz, Manfred J. Mark, Francesca Ferlaino,

Advanced Frequency and Time Standards

We realize a two-component dipolar Fermi gas with tunable interactions, using erbium atoms. Employing a lattice-protection technique, we selectively prepare deeply degenerate mixtures of the two lowest spin states and perform high-resolution Feshbach spectroscopy in an optical dipole trap. We identify a comparatively broad Feshbach resonance and map the interspin scattering length in its vicinity. The Fermi mixture shows a remarkable collisional stability in the strongly interacting regime, providing a first step towards studies of superfluid pairing, crossing from Cooper pairs to bound molecules, in presence of dipole-dipole interactions.