Physical Review Letters
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 an atom propagation time of 10 ms.
Wang, Ying-Ju; Anderson, Dana Z.; Bright, Victor M.; Cornell, Eric A.; Diot, Quentin; Kishimoto, Tetsuo; Prentiss, Mara; Saravanan, R. A.; Segal, Stephen R.; and Wu, Saijun, "An Atom Michelson Interferometer on a Chip Using a Bose-Einstein Condensate" (2005). Physics Faculty Contributions. 28.