title: Quantum noise interference and backaction cooling in cavity nanomechanics.
abstract: 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}. The system described here could be implemented directly using setups similar to those used in recent experiments in cavity electromechanics.
authors.affiliation: Department of Physics, McGill University, Montreal, Quebec, Canada H3A 2T8.
authors.forename: Florian
authors.initials: F
authors.lastname: Elste
authors.forename: S M
authors.initials: SM
authors.lastname: Girvin
authors.forename: A A
authors.initials: AA
authors.lastname: Clerk