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6 papers
Direct, Non-Destructive Imaging of Magnetization in a Spin-1 Bose Gas
J. M. Higbie, L. E. Sadler, S. Inouye +5
Polarization-dependent phase-contrast imaging is used to spatially resolve the magnetization of an optically trapped ultracold gas. This probe is applied to Larmor precession of de…
Sodium Bose-Einstein Condensates in the F=2 State in a Large-volume Optical Trap
A. Görlitz, T. L. Gustavson, A. E. Leanhardt +6
We have investigated the properties of Bose-Einstein condensates of sodium atoms in the upper hyperfine ground state in a purely optical trap. Condensates in the high-field seeking…
Realization of Bose-Einstein condensates in lower dimensions
A. Gorlitz, J. M. Vogels, A. E. Leanhardt +9
Bose-Einstein condensates of sodium atoms have been prepared in optical and magnetic traps in which the energy-level spacing in one or two dimensions exceeds the interaction energy…
Observation of vortex phase singularities in Bose-Einstein condensates
S. Inouye, S. Gupta, T. Rosenband +6
We have observed phase singularities due to vortex excitation in Bose-Einstein condensates. Vortices were created by moving a laser beam through a condensate. They were observed as…
Suppression and enhancement of impurity scattering in a Bose-Einstein condensate
A. P. Chikkatur, A. Gorlitz, D. M. Stamper-Kurn +3
Impurity atoms propagating at variable velocities through a trapped Bose-Einstein condensate were produced using a stimulated Raman transition. The redistribution of momentum by co…
Excitations of a Bose-Einstein Condensate at Non-Zero Temperature: A Study of Zeroth, First and Second Sound
D. M. Stamper-Kurn, H. -J. Miesner, S. Inouye +2
Collective excitations of a dilute Bose gas were probed above and below the Bose-Einstein condensation temperature. The temperature dependencies of the frequency and damping rates…