Sodium Bose-Einstein Condensates in the F=2 State in a Large-volume Optical Trap

A. Görlitz; T. L. Gustavson; A. E. Leanhardt; R. Löw; A. P. Chikkatur; S. Gupta; S. Inouye; D. E. Pritchard; W. Ketterle

doi:10.1103/PhysRevLett.90.090401

paper

Sodium Bose-Einstein Condensates in the F=2 State in a Large-volume Optical Trap

arXiv:cond-mat/0208385 · doi:10.1103/PhysRevLett.90.090401

Abstract

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 $∣ F = 2, m_{F} = - 2 >$ state were created from initially prepared $∣ F = 1, m_{F} = - 1 >$ condensates using a one-photon microwave transition at 1.77 GHz. The condensates were stored in a large-volume optical trap created by a single laser beam with an elliptical focus. We found condensates in the stretched state $∣ F = 2, m_{F} = - 2 >$ to be stable for several seconds at densities in the range of $1 0^{14}$ atoms/cm $^{3}$ . In addition, we studied the clock transition $∣ F = 1, m_{F} = 0 >$ $\to$ $∣ F = 2, m_{F} = 0 >$ in a sodium Bose-Einstein condensate and determined a density-dependent frequency shift of $(2.44 \pm 0.25) \times 1 0^{- 12}$ Hz cm $^{3}$ .

4 pages, 3figures

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Topological vortex formation in a Bose-Einstein condensate

Sodium Bose-Einstein Condensates in the F=2 State in a Large-volume Optical Trap

Abstract

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