Author Affiliations

R. J. C. Spreeuw,¹ C. Gerz,¹ Lori S. Goldner,¹ W. D. Phillips,¹ M. W. Reynolds,^* S. L. Rolston,¹ Isaac F. Silvera,^* and C. J. Westbrook¹

¹National Institute of Standards and Technology, PHY A-167, Gaithersburg, MD 20899.

^*Lyman Laboratory of Physics, Harvard University, Cambridge, 02138.