title: Resonant coupling of a Bose-Einstein condensate to a micromechanical oscillator.
abstract: We report experiments in which the vibrations of a micromechanical oscillator are coupled to the motion of Bose-condensed atoms in a trap. The interaction relies on surface forces experienced by the atoms at about 1 microm distance from the mechanical structure. We observe resonant coupling to several well-resolved mechanical modes of the condensate. Coupling via surface forces does not require magnets, electrodes, or mirrors on the oscillator and could thus be employed to couple atoms to molecular-scale oscillators such as carbon nanotubes.
authors.affiliation: Fakultät für Physik, Ludwig-Maximilians-Universität, Schellingstrasse 4, 80799 München, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Hunger
authors.forename: Stephan
authors.initials: S
authors.lastname: Camerer
authors.forename: Theodor W
authors.initials: TW
authors.lastname: Hänsch
authors.forename: Daniel
authors.initials: D
authors.lastname: König
authors.forename: Jörg P
authors.initials: JP
authors.lastname: Kotthaus
authors.forename: Jakob
authors.initials: J
authors.lastname: Reichel
authors.forename: Philipp
authors.initials: P
authors.lastname: Treutlein