Cavity-Enhanced Long-Distance Coupling of an Atomic Ensemble to a Micromechanical Membrane

Abstract

We discuss a hybrid quantum system where a dielectric membrane situated inside an optical cavity is coupled to a distant atomic ensemble trapped in an optical lattice. The coupling is mediated by the exchange of sideband photons of the lattice laser, and is enhanced by the cavity finesse as well as the square root of the number of atoms. In addition to observing coherent dynamics between the two systems, one can also switch on a tailored dissipation by laser cooling the atoms, thereby allowing for sympathetic cooling of the membrane. The resulting cooling scheme does not require resolved sideband conditions for the cavity, which relaxes a constraint present in standard optomechanical cavity cooling. We present a quantum mechanical treatment of this modular open system which takes into account the dominant imperfections, and identify optimal operation points for both coherent dynamics and sympathetic cooling. In particular, we find that ground state cooling of a cryogenically pre-cooled membrane is possible for realistic parameters.

13 pages, 4 figures, slightly revised version

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Cited by in corpus (19)

• Sympathetic cooling of a membrane oscillator in a hybrid mechanical-atomic system
• Review of cavity optomechanical cooling
• Hybrid optomechanical cooling by atomic $\Lambda$ systems
• Optimal limits of cavity optomechanical cooling in the strong coupling regime
• Coherent control and feedback cooling in a remotely-coupled hybrid atom-optomechanical system
• Auxiliary-cavity-assisted ground-state cooling of optically levitated nanosphere in the unresolved-sideband regime
• Cold atoms as a coolant for levitated optomechanical systems
• Long Distance Coupling of a Quantum Mechanical Oscillator to the Internal States of an Atomic Ensemble
• Hybrid cavity mechanics with doped systems
• Cooling mechanical resonators to quantum ground state from room temperature
• Collective excitation of Rydberg-atom ensembles beyond the $\sqrt{N}$ enhancement
• Optomechanically-induced-transparency cooling of massive mechanical resonators to the quantum ground state
• A millikelvin all-fiber cavity optomechanical apparatus for merging with ultra-cold atoms in a hybrid quantum system
• Creating atom-nanoparticle quantum superpositions
• Ground state cooling in a hybrid optomechanical system with a three-level atomic ensemble
• Bose-Einstein condensates in an atom-optomechanical system with effective global non-uniform interaction
• Time crystal and chaos in the hybrid atom-optomechanics system
• Quantum decoherence of an anharmonic oscillator monitored by a Bose-Einstein condensate
• Nanomechanically-induced nonequilibrium quantum phase transition to a self-organized density wave of a Bose-Einstein condensate