Quantum Noise Interference and Back-action Cooling in Cavity Nanomechanics

Details Quantum Noise Interference and Back-action Cooling in Cavity Nanomechanics Quantum Noise Interference and Back-action Cooling in Cavity Nanomechanics

2009-03-12

arxiv.org/abs/0903.2242v2

Phys. Rev. Lett 102, 207209 (2009).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4+ pages, 2 figures. Error in second last paragraph corrected

Scientific paper

10.1103/PhysRevLett.102.207209

We present a theoretical analysis of a novel cavity electromechanical system where a mechanical resonator directly modulates the damping rate kappa of a driven electromagnetic cavity. We show that via a destructive interference of quantum noise, the driven cavity can effectively act like a zero-temperature bath irrespective of the ratio kappa / omega_M, where omega_M is the mechanical frequency. This scheme thus allows one to cool the mechanical resonator to its ground state without requiring the cavity to be in the so-called `good cavity' limit kappa << omega_M.

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