Certain materials become superconducting when their electrons pair up. This phenomenon is well understood in conventional superconductors, which operate only at extremely low temperatures. But it remains obscure in some unconventional superconductors, which can function at surprisingly high temperatures. Now Henning Schlömer at the University of Munich and his colleagues have proposed a method to investigate electron behavior in these high-temperature superconductors using a quantum simulator based on atoms arranged in lattices of laser light [1].
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