Cooling of a nanomechanical resonator in presence of a single diatomic molecule

We propose a theoretical scheme for coupling a nanomechanical resonator to a single diatomic molecule via microwave cavity mode of a driven LC resonator. We describe the diatomic molecule by a Morse potential and find the corresponding equations of motion of the hybrid system by using Fokker–Planck...

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Bibliographic Details
Published in:Annals of physics 2015-04, Vol.355, p.130-142
Main Authors: Eghbali-Arani, M., Barzanjeh, Sh, Yavari, H., Shahzamanian, M.A.
Format: Article
Language:English
Subjects:
Molecules
Nanomechanical resonator
Nanoparticles
Physics
Quantum ground state cooling
Superconducting circuit
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Summary:We propose a theoretical scheme for coupling a nanomechanical resonator to a single diatomic molecule via microwave cavity mode of a driven LC resonator. We describe the diatomic molecule by a Morse potential and find the corresponding equations of motion of the hybrid system by using Fokker–Planck formalism. Analytical expressions for the effective frequency and the effective damping of the nanomechanical resonator are obtained. We analyze the ground state cooling of the nanomechanical resonator in presence of the diatomic molecule. The results confirm that presence of the molecule improves the cooling process of the mechanical resonator. Finally, the effect of molecule’s parameters on the cooling mechanism is studied.
ISSN:0003-4916
1096-035X
DOI:10.1016/j.aop.2015.02.009