News: Research Highlights

Sat January 1, 2011

Making Van Der Waals Molecules

Van der waals molecules involving helium as a partner are typically very weakly bound and exist only in non-equilibrium situations. Here, through re-analysis of Ag atom magnetic trap loss, a general method for creating, in equilibrium, a host of vdW molecules in the very low temperature (and high cooling capacity) conditions of dilution refrigerator cooled...
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Sat January 1, 2011

Spin gradient demagnetization cooling of ultracold atoms

We have demonstrated a new cooling method in which a time-varying magnetic field gradient is applied to an ultracold spin mixture [1].  We prepare a two-component cloud of rubidium atoms, either in the superfluid or Mott insulator phase, in a strong field gradient separating the two components with a narrow mixed region between the pure-spin...
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