A Bose-Einstein condensate (BEC) is a new state of matter, occurring at extremely low temperature near absolute zero. All particles collapse into a same quantum ground state, forming a macroscopic quantum object with remarkable properties. Bose-Einstein condensation has been observed for the first time in dilute atomic gases in 1995 (70 years after the theoretical prediction), finally allowing to study many fundamental quantum phenomena such as superfluidity, quantized vortices and matter wave interference. Now ultracold quantum gases define a new class of physical experiments. Because of the extreme cleanness of samples and the unprecedented parameter control, the quantum gas experiments provide unique opportunities to directly simulate quantum many-body physics. This is a new approach to resolve the long-standing, unresolved problems of strongly correlated materials such as high-temperature superconductors and quantum magnets. Here we propose experimental study of strongly interacting systems, quantum-classical correspondence and quantum information by using ultracold atoms. The outcomes of our studies will provide valuable insight to understand fundamental physics behind high temperature superconductivity and metal-insulator transition, eventually facilitating development of new quantum materials, which is likely to serve as a growth-generating field in the future.

snu bec

The first BEC in Korea, produced by SNU BEC group