Abstract
Over the last twenty years or so, physicists have been learning to manipulate individual quantum objects : atoms, ions, molecules, quantum circuits.... They now know how to build " atom by atom " a synthetic quantum matter. This presentation will introduce an example of such a system, based on sets of individual atoms trapped in optical tweezers. By exciting the atoms with lasers, we control their interactions and thus study their properties in regimes where simulations by usual numerical methods are already very difficult. Aspects of this research have led to the creation of the Pasqal company.
