title: Observation of Bose-Einstein condensation of molecules.
abstract: We have observed Bose-Einstein condensation of molecules. When a spin mixture of fermionic 6Li atoms was evaporatively cooled in an optical dipole trap near a Feshbach resonance, the atomic gas was converted into 6Li2 molecules. Below 600 nK, a Bose-Einstein condensate of up to 900 000 molecules was identified by the sudden onset of a bimodal density distribution. This condensate realizes the limit of tightly bound fermion pairs in the crossover between BCS superfluidity and Bose-Einstein condensation.
authors.affiliation: Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, MIT, Cambridge, Massachusetts 02139, USA.
authors.forename: M W
authors.initials: MW
authors.lastname: Zwierlein
authors.forename: C A
authors.initials: CA
authors.lastname: Stan
authors.forename: C H
authors.initials: CH
authors.lastname: Schunck
authors.forename: S M F
authors.initials: SM
authors.lastname: Raupach
authors.forename: S
authors.initials: S
authors.lastname: Gupta
authors.forename: Z
authors.initials: Z
authors.lastname: Hadzibabic
authors.forename: W
authors.initials: W
authors.lastname: Ketterle