Two-species mixture of quantum degenerate Bose and Fermi gases -: art. no. 160401

We have produced a macroscopic quantum system in which a Li-6 Fermi sea coexists with a large and stable Na-23 Bose-Einstein condensate. This was accomplished using interspecies sympathetic cooling of fermionic Li-6 in a thermal bath of bosonic Na-23 . The system features rapid thermalization and long lifetimes.