Resonant coupling of a Bose-Einstein condensate to a micromechanical oscillator.
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.
Hunger
David
D
Fakultät für Physik, Ludwig-Maximilians-Universität, Schellingstrasse 4, 80799 München, Germany.
Camerer
Stephan
S
Hänsch
Theodor W
TW
König
Daniel
D
Kotthaus
Jörg P
JP
Reichel
Jakob
J
Treutlein
Philipp
P