Mesoscopic transport with weakly-interacting Bose gases

Utracold atomic gases play crucial roles in revealing nontrivial quantum transport phenomena. Especially, quantum transport of weakly-interacting Bose gases would be interesting in that the realizations with condensed-matter systems are difficult.

In this talk, I will demonstrate that two-terminal transport systems with Bose-Einstein condensates show nontrivial transport properties. In spite of the formal similarity with fermionic superconducting systems, the current-bias characteristics in Bose-Einstein condensates is quite different due to the presence of a unique transport process existing in the condensates.