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Introduction

Research on ultracold atoms is exciting and active. Important milestones in this field  include

  • Laser cooling and trapping of neutral atoms (1986), Nobel Prize in 1997:   
    • Steven Chu (my Ph.D. advisor), William D. Phillips and Claude Cohen-Tannoudji
  • Bose-Einstein condensation of neutral atoms (1995), Nobel Prize in 2001:
    • By Eric Cornell and Carl Wieman, by Wolfgang Ketterle and by Randy Hulet.
A general review article on ultracold atoms: nature insight - ultracold matter

Research on ultracold molecules is an EVEN NEWER and diversified. Recent progresses include.

  • Bose-Einstein condensation of molecules (2003)
  • Crossover from a Bose-Einstein condensate to a Bardeen-Cooper-Schreiffer superfluid (2004)
  • Observation of three- and four-body bound states (2005, 2006)

A few general articles are here,
      Ultracold atoms spark a hot race
      Arrival of the fermion superfluid
      The birth of ultracold molecules in the world of quantum gases

Our research topics include

Formation and Condensation of Ultracold Complex Molecules

Advantages of using ultracold atoms and molecules:

  • Almost absence of thermal fluctuation
  • Extremely high energy resolution
  • Tunability of the interaction strength

Quantum simulation os physics in other fields using cold atoms:

  • BEC-BCS crossover (high-Tc Superconductivity)
  • BEC in optical lattices (Superfluid-Mott insulator transition)
  • Efimov trimer and tetramer states (nuclear physics, physical chemistry)
Realization of Scalable Quantum Manipulations in Optical Lattices

Advantages of using ultracold atoms:

  • Optical lattices are impurity-free and can be precisely characterized.
  • Very long coherence time of 1s ~ 10s can be achieved.
  • Strong spin dependent atom-molecule couplings can be realized.