A Beam Splitter for Guided Atoms on an Atom Chip
  We have designed and experimentally studied a simple beam splitter for atoms guided on an Atom Chip, using a current carrying Y-shaped wire and a bias magnetic field. This beam splitter and other similar designs can be used to build atom optical elements on the mesoscopic scale, and integrate them in matterwave quantum circuits. 
Donatella Cassettari, Bj\"orn Hessmo, Ron Folman, Thomas Maier, J\"org   Schmiedmayer