title: Atomic quantum simulator for lattice gauge theories and ring exchange models.
abstract: We present the design of a ring exchange interaction in cold atomic gases subjected to an optical lattice using well-understood tools for manipulating and controlling such gases. The strength of this interaction can be tuned independently and describes the correlated hopping of two bosons. We discuss a setup where this coupling term may allow for the realization and observation of exotic quantum phases, including a deconfined insulator described by the Coulomb phase of a three-dimensional U(1) lattice gauge theory.
authors.affiliation: Institute for Quantum Optics and Quantum Information of the Austrian Academy of Science, Innsbruck.
authors.forename: H P
authors.initials: HP
authors.lastname: Büchler
authors.forename: M
authors.initials: M
authors.lastname: Hermele
authors.forename: S D
authors.initials: SD
authors.lastname: Huber
authors.forename: Matthew P A
authors.initials: MP
authors.lastname: Fisher
authors.forename: P
authors.initials: P
authors.lastname: Zoller