A technique for cooling ultracold atoms in optical lattices has been demonstrated. This advance should allow the physics of strongly correlated systems, including that of quantum magnetism, to be explored. See Letter p.500
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Campbell, G. When ultracold is not cold enough. Nature 480, 463–465 (2011). https://doi.org/10.1038/480463a
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DOI: https://doi.org/10.1038/480463a
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