REFLECTION BEAM SPLITTER FOR MULTILEVEL ATOMS

We propose a beam splitter for atomic de Broglie waves combining atomi c reflection from an evanescent laser wave with induced transitions be tween ground-state sublevels in a homogeneous magnetic field. An inela stic change of Zeeman energy during the reflection results in an angul ar separation of the outgoing partial beams. By choosing suitable rela tive phases between the polarization components of the evanescent wave , a two-channel beam splitter with an adjustable splitting ratio can b e realized.