John Close received his Ph.D. from the University of California at Berkeley in 1991. After postdoctoral fellowships at the University of Washington in Seattle and at the Max-Planck-Institut für Strömungsforschung in Göttingen, he returned to Australia and is now a professor in the Department of Quantum Science at the Australian National University. His current research interests are in Bose Einstein condensation, precision measurement, and tests of fundamental physics. He is interested in both theory and experiment.
An improved mirror reduces the errors in an atom interferometer caused by Earth’s rotation and increases the time and spatial dimensions over which precision measurements can be made.