Increasing the coherence time of Bose-Einstein-condensate interferometers with optical control of dynamics
arXiv:physics/0701191 · doi:10.1103/PhysRevA.75.063603
Abstract
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.
34 Pages, 8 Figures
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