title: Spinor dynamics-driven formation of a dual-beam atom laser.
abstract: We demonstrate a novel dual-beam atom laser formed by outcoupling oppositely polarized components of an all-optical F = 1 spinor Bose-Einstein condensate whose Zeeman sublevel populations have been coherently evolved through spin dynamics. The condensate is formed through all-optical means using a single-beam running-wave dipole trap. We create a condensate in the magnetic field-insensitive m(F) = 0 state, and drive coherent spin-mixing evolution through adiabatic compression of the initially weak trap. Such dual beams, number-correlated through the angular momentum-conserving reaction 2m(0) ?m(+1) +m(-1), have been proposed as tools to explore entanglement and squeezing in Bose-Einstein condensates, and have potential use in precision phase measurements.
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-8099, USA. lundblad@caltech.edu
authors.forename: N
authors.initials: N
authors.lastname: Lundblad
authors.forename: R J
authors.initials: RJ
authors.lastname: Thompson
authors.forename: D C
authors.initials: DC
authors.lastname: Aveline
authors.forename: L
authors.initials: L
authors.lastname: Maleki