Cavity-assisted preparation and detection of a unitary Fermi gas

We report on the fast production and weakly destructive detection of a Fermi gas with tunable interactions in high finesse cavity. The cavity is used both far off-resonant light to create deep optical dipole trap, near-resonant reach strong light-matter coupling regime. cavity-based trap allows for an efficient capture laser-cooled atoms, use lattice-cancellation scheme makes it possible perform intra-cavity evaporative cooling. After transfer crossed we produce deeply degenerate unitary gases up $7 \cdot 10^5$ atoms inside cavity, overall $2.85$ s long sequence. then probed five hundred-times repeated, dispersive measurements population individual clouds, allowing observations slow atom-number variations over single sample. This platform will make real-time observation transport dynamics as well study driven-dissipative, strongly correlated quantum matter.