The Hulet Group explores new phases of matter at ultralow temperatures. Lithium is used because it has stable boson and fermion isotopes. These studies have resulted in the observation of the collapse of a Bose-Einstein condensate with attractive interactions, the creation of a matter-wave soliton train, the first realization of a Bose/Fermi quantum gas mixture, and studies of the BEC/BCS crossover with ultracold Fermi gases. Their fermion research focuses on the realization of fundamental models of importance to condensed matter and material physics.

The Ultracold Atoms and Plasmas Group studies ultracold neutral plasmas and ultracold atomic gases. Both experiments start with laser-cooled and trapped neutral strontium. Laser-cooling is a powerful technique for producing and trapping atoms at temperatures as low as one millionth of a degree above absolute zero. Under these exotic conditions, matter behaves in fundamentally different ways, and the exploration of this regime teaches us about the basic laws of nature and lays the foundation for powerful new technological advances, such as ultra-precise clocks or quantum computers.

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