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Probing number squeezing of ultracold atoms across the superfluid-Mott insulator transition
Fabrice Gerbier, Simon Foelling, Artur Widera +2
The evolution of on-site number fluctuations of ultracold atoms in optical lattices is experimentally investigated by monitoring the suppression of spin-changing collisions across…
Interference pattern and visibility of a Mott insulator
Fabrice Gerbier, Artur Widera, Simon Foelling +3
We analyze theoretically the experiment reported in [F. Gerbier et al, cond-mat/0503452], where the interference pattern produced by an expanding atomic cloud in the Mott insulator…
Coherent collisional spin dynamics in optical lattices
Artur Widera, Fabrice Gerbier, Simon Foelling +3
We report on the observation of coherent, purely collisionally driven spin dynamics of neutral atoms in an optical lattice. For high lattice depths, atom pairs confined to the same…
Phase coherence of an atomic Mott insulator
Fabrice Gerbier, Artur Widera, Simon Foelling +3
We investigate the phase coherence properties of ultracold Bose gases in optical lattices, with special emphasis on the Mott insulating phase. We show that phase coherence on short…
Spatial quantum noise interferometry in expanding ultracold atom clouds
Simon Foelling, Fabrice Gerbier, Artur Widera +3
In a pioneering experiment, Hanbury Brown and Twiss (HBT) demonstrated that noise correlations could be used to probe the properties of a (bosonic) particle source through quantum…