Signatures for a classical to quantum transition of a driven nonlinear nanomechanical resonator

Itamar Katz, Alex Retzker, Raphael Straub, Ron Lifshitz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

Abstract

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 signatures, in the near future, that NEMS resonators are entering the quantum domain.

Original languageAmerican English
Article number040404
JournalPhysical Review Letters
Volume99
Issue number4
DOIs
StatePublished - 26 Jul 2007
Externally publishedYes

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