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

Abstract

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.

published version (5 pages, 3 figures)

References in corpus (8)

• Radiation-pressure cooling and optomechanical instability of a micro-mirror
• Self-cooling of a micro-mirror by radiation pressure
• Cooling a nanomechanical resonator with quantum back-action
• Radio-frequency dressed state potentials for neutral atoms
• Microwave potentials and optimal control for robust quantum gates on an atom chip
• Transporting, splitting and merging of atomic ensembles in a chip trap
• Periodic Field Emission from an Isolated Nano-Scale Electron Island
• Electrodynamic trapping of spinless neutral atoms with an atom chip

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• Entangling the ro-vibrational modes of a macroscopic mirror using radiation pressure
• Jahn-Teller systems from a cavity QED perspective
• Measurement of the trapping lifetime close to a cold metallic surface on a cryogenic atom-chip
• Ground state cooling of nanomechanical resonator via parametric linear coupling
• Cold Fermi atomic gases in a pumped optical resonator
• Detecting quantum-coherent nanomechanical oscillations using the current-noise spectrum of a double quantum dot
• Coupling nanomechanical cantilevers to dipolar molecules
• Trapping cold atoms using surface-grown carbon nanotubes
• Electron spin manipulation and resonator readout in a double quantum dot nano-electromechanical system
• Impact of the Meissner effect on magnetic micro traps for neutral atoms near superconducting thin films
• Quantum interference structures in trapped ion dynamics beyond the Lamb-Dicke and rotating wave approximations
• Macroscopic entanglement between a Bose Einstein condensate and a superconducting loop
• Macroscopic Entanglement of a Bose Einstein Condensate on a Superconducting Atom Chip