Resonant coupling of a Bose-Einstein condensate to a micromechanical oscillator

TL;DR

This paper demonstrates resonant coupling between a Bose-Einstein condensate and a micromechanical oscillator through surface forces, enabling potential integration with nanoscale devices without the need for additional coupling components.

Contribution

It introduces a novel method to couple atomic condensates to mechanical oscillators using surface forces, avoiding the need for magnets or electrodes.

Findings

Resonant coupling observed with multiple mechanical modes

Coupling achieved at micrometer distances without magnets

Potential for coupling to nanoscale oscillators like carbon nanotubes

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 one micrometer 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.