2007/01/16 by James Stickney, Dana Z. Anderson, Alex Zozulya
Physics and Astronomy · #physics.atom-ph
paper · pdf · doi:10.1103/physreva.75.063603
34 Pages, 8 Figures
arxiv created 2007/01/16 · arxiv updated 2009/12/01
Atom interferometers using Bose-Einstein condensate that is confined in a waveguide and manipulated by optical pulses have been limited by their short coherence times. We present a theoretical model that offers a physically simple explanation for the loss of contrast and propose the method for increasing the fringe contrast by recombining the atoms at a different time. A simple, quantitatively accurate, analytical expression for the optimized recombination time is presented and used to place limits on the physical parameters for which the contrast may be recovered.