title: Coherent cold collisions with neutral atoms in optical lattices.
abstract: By loading a Bose-Einstein condensate into a three-dimensional optical lattice potential, we have been able to demonstrate several fundamental aspects of coherent cold collisions between neutral atoms. We show experimentally how such collisions lead to a well-defined phase shift in the corresponding many-body wave function. The experimental realization of such interactions can be fundamental for the simulation of complex condensed-matter-physics Hamiltonians, for the creation of large-scale entanglement and for the realization of quantum gates with neutral atoms.
authors.affiliation: Ludwig-Maximilians-Universität, Schellingstrasse 4/III, 80799 Munich, Germany.
authors.forename: Immanuel
authors.initials: I
authors.lastname: Bloch
authors.forename: Markus
authors.initials: M
authors.lastname: Greiner
authors.forename: Olaf
authors.initials: O
authors.lastname: Mandel
authors.forename: Theodor W
authors.initials: TW
authors.lastname: Hänsch