Author Affiliations

Michelle L. Silva,^#,$ Robert W. Field,^# Jun Ye,^#,* Long-Sheng Ma,^*,** and John L. Hall^#,*

^#George R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139

^*JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440 USA

^**Permanent Address: Laboratory for Quantum Optics, East China Normal University, Shanghai, P.R. China.

^$ msilva@mit.edu