Bose-Einstein condensate coupled to a nanomechanical resonator on an atom chip

Details Bose-Einstein condensate coupled to a nanomechanical resonator on an atom chip Bose-Einstein condensate coupled to a nanomechanical resonator on an atom chip

2007-03-22

arxiv.org/abs/quant-ph/0703199v3

Phys. Rev. Lett. 99, 140403 (2007)

Physics

Quantum Physics

published version (5 pages, 3 figures)

Scientific paper

10.1103/PhysRevLett.99.140403

We theoretically study the coupling of Bose-Einstein condensed atoms to the mechanical oscillations of a nanoscale cantilever with a magnetic tip. This is an experimentally viable hybrid quantum system which allows one to explore the interface of quantum optics and condensed matter physics. We propose an experiment where easily detectable atomic spin-flips are induced by the cantilever motion. This can be used to probe thermal oscillations of the cantilever with the atoms. At low cantilever temperatures, as realized in recent experiments, the backaction of the atoms onto the cantilever is significant and the system represents a mechanical analog of cavity quantum electrodynamics. With high but realistic cantilever quality factors, the strong coupling regime can be reached, either with single atoms or collectively with Bose-Einstein condensates. We discuss an implementation on an atom chip.

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