2004/07/27 by Ying-Ju Wang, Dana Z. Anderson, Victor M. Bright +7
Physics and Astronomy · #cond-mat.other #cond-mat.soft #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.94.090405
arxiv created 2004/07/27 · arxiv updated 2009/12/01
An atom Michelson interferometer is implemented on an "atom chip." The chip uses lithographically patterned conductors and external magnetic fields to produce and guide a Bose-Einstein condensate. Splitting, reflecting, and recombining of condensate atoms are achieved by a standing-wave light field having a wave vector aligned along the atom waveguide. A differential phase shift between the two arms of the interferometer is introduced by either a magnetic-field gradient or with an initial condensate velocity. Interference contrast is still observable at 20% with atom propagation time of 10 ms.