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Observation of Bose-Einstein Condensation of Molecules
M. W. Zwierlein, C. A. Stan, C. H. Schunck +4
We have observed Bose-Einstein condensation of molecules. When a spin mixture of fermionic Li-6 atoms was evaporatively cooled in an optical dipole trap near a Feshbach resonance,…
Radio-Frequency Spectroscopy of Ultracold Fermions
S. Gupta, Z. Hadzibabic, M. W. Zwierlein +6
Radio-frequency techniques were used to study ultracold fermions. We observed the absence of mean-field "clock" shifts, the dominant source of systematic error in current atomic cl…
Collisions in zero temperature Fermi gases
Subhadeep Gupta, Zoran Hadzibabic, James R. Anglin +1
We examine the collisional behavior of two-component Fermi gases released at zero temperature from a harmonic trap. Using a phase-space formalism to calculate the collision rate du…
Spectroscopic insensitivity to cold collisions in a two-state mixture of fermions
Martin W. Zwierlein, Zoran Hadzibabic, Subhadeep Gupta +1
We have experimentally demonstrated the absence of spectroscopic resonance shifts in a mixture of two interacting Fermi gases. This result is linked to observations in an ultracold…
Two-species mixture of quantum degenerate Bose and Fermi gases
Z. Hadzibabic, C. A. Stan, K. Dieckmann +4
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 inter-species s…
Transport of Bose-Einstein Condensates with Optical Tweezers
T. L. Gustavson, A. P. Chikkatur, A. E. Leanhardt +4
We have transported gaseous Bose-Einstein condensates over distances up to 44 cm. This was accomplished by trapping the condensate in the focus of an infrared laser and translating…