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All optical production of a 39K BEC

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Disorder is ubiquitous in condensed matter systems and it has proved to profoundly affect the transport properties. The main goal of our experiment is to observe the inhibition of transport due to disorder in two dimensions, a phenomenon called Anderson localisation. However it requires very low temperature and weekly interacting gases. In this talk I will present the all optical production of a 39K BEC by directly loading a dipole trap from the molasses. I will describe in details the gray molasses technique that allows to load a high number of atoms in an optical trap and the procedure to achieve an efficient evaporative cooling to Bose Einstein condensation. I will finish my talk by describing the short term perspective to observe coherent effects in the momentum distribution of a 2D disordered Bose gas

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