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A new generation experiment for the study of strongly interacting Fermi gases

Abstract : This thesis reports on the construction of a new generation quantum gas experiment aiming to study strongly interacting Fermi gases of ⁶Li. A detailed description of the design and implementation, as well as characterization of the apparatus is presented. We have realized a large magneto-optical trap of ⁶Li followed by a gray molasses, to efficiently cool the atoms to sub-Doppler temperatures, which yield excellent starting conditions for loading into an optical dipole trap. An optical transport with high efficiency as well as evaporative cooling at unitarity leads to the production of an ultracold Fermi gas of ⁶Li in a total sequence duration of 16s. Combined with the utilization of single-atom imaging and tailored potentials, this newly built machine paves the way towards novel experiments on ultracold Fermi gases, such as the measurement of spin-dependent correlation functions or the quest for exotic spin-imbalanced superfluid phases.
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Submitted on : Wednesday, December 1, 2021 - 1:50:24 PM
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Shuwei Jin. A new generation experiment for the study of strongly interacting Fermi gases. Quantum Gases [cond-mat.quant-gas]. Université Paris sciences et lettres, 2019. English. ⟨NNT : 2019PSLEE085⟩. ⟨tel-03461571⟩



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