We propose an internship and PhD on degenerate Fermi gases of strontium 87 atoms. This is an exotic fermionic system, in that its spin-9/2 degree of freedom encompasses a large number (10) of Zeeman sublevels. The objective is to explore novel many-body effects (exotic antiferromagnets driven by generalized Fermi-Hubbard model, and "dissipatively stabilized" ferromagnets), and to demonstrate the “technological” opportunity of these quantum objects as a resource for quantum simulation, computation, or sensing. The idea of a dissipative control is counter-intuitive: dissipation, typically destroying the manifestations of quantum physics, will here actually stabilize quantum states with many-body correlations. This means that quantum phenomena may be harvested for quantum simulation or quantum sensing (clocks, atom interferometers) in a more robust manner than formerly thought. Our experiments rely on the original spectroscopic properties of strontium: narrow optical lines, relevant to atomic clocks, and that in our case we use to engineer highly selective spin manipulations. We will in the short term use the combined effect of a photo-association laser and of the Pauli principle, to pump the atomic ensemble towards spin-symmetric entangled states. Our objectives will be to characterize these states, test their interest for metrology (e.g. optical clocks desensitized to interaction shifts), and explore new schemes to manipulate the symmetries of the collective spin state.