Nature research paper: Realizing the symmetry-protected Haldane phase in Fermi–Hubbard ladders
, with an imaging time of 2.5 s. The fluorescence of both planes is collected through the same high-resolution objective. The light is then split into two paths using a polarizing beam splitter. One of the beams passes through a variable 1:1 telescope before both paths are recombined on a second polarizing beam splitter with a small spatial offset. This enables us to image both planes in a single exposure, with each plane in focus on a separate fixed position of our camera.
, the average density and occupation histograms of all four ladders and the reservoir area are shown for the dataset ofIn each experimental run, four ladder systems are realized. To fulfil the criteria of the Heisenberg regime, we then select on ladder instances with atom number
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