Classical to Quantum Transition of a Driven Nonlinear Nanomechanical Resonator

Details Classical to Quantum Transition of a Driven Nonlinear Nanomechanical Resonator Classical to Quantum Transition of a Driven Nonlinear Nanomechanical Resonator

2007-02-09

arxiv.org/abs/cond-mat/0702255v1

Phys. Rev. Lett. 99 (2007) 040404.

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.99.040404

We seek the first indications that a nanoelectromechanical system (NEMS) is entering the quantum domain as its mass and temperature are decreased. We find them by studying the transition from classical to quantum behavior of a driven nonlinear Duffing resonator. Numerical solutions of the equations of motion, operating in the bistable regime of the resonator, demonstrate that the quantum Wigner function gradually deviates from the corresponding classical phase-space probability density. These clear differences that develop due to nonlinearity can serve as experimental evidence, in the near future, that NEMS resonators are entering the quantum domain.

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