title: Collinear four-wave mixing of two-component matter waves.
abstract: We demonstrate atomic four-wave mixing of two-component matter waves in a collinear geometry. Starting from a single-species Bose-Einstein condensate, seed and pump modes are prepared through microwave state transfer and state-selective Kapitza-Dirac diffraction. Four-wave mixing then populates the initially empty output modes. Simulations based on a coupled-mode expansion of the Gross-Pitaevskii equation are in very good agreement with the experimental data. We show that four-wave mixing can play an important role in studies of bosonic mixtures in optical lattices. Moreover, our system should be of interest in the context of quantum atom optics.
authors.affiliation: Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA. dpertot@ic.sunysb.edu
authors.forename: Daniel
authors.initials: D
authors.lastname: Pertot
authors.forename: Bryce
authors.initials: B
authors.lastname: Gadway
authors.forename: Dominik
authors.initials: D
authors.lastname: Schneble