title: Signal amplification by sensitive control of bifurcation topology.
abstract: We describe a novel amplification scheme based on inducing dynamical changes to the topology of a bifurcation diagram of a simple nonlinear dynamical system. We have implemented a first bifurcation-topology amplifier using a coupled pair of parametrically driven high-frequency nanoelectromechanical systems resonators, demonstrating robust small-signal amplification. The principles that underlie bifurcation-topology amplification are simple and generic, suggesting its applicability to a wide variety of physical, chemical, and biological systems.
authors.affiliation: Kavli Nanoscience Institute and Condensed Matter Physics, California Institute of Technology, Pasadena, 91125, USA.
authors.forename: R B
authors.initials: RB
authors.lastname: Karabalin
authors.forename: Ron
authors.initials: R
authors.lastname: Lifshitz
authors.forename: M C
authors.initials: MC
authors.lastname: Cross
authors.forename: M H
authors.initials: MH
authors.lastname: Matheny
authors.forename: S C
authors.initials: SC
authors.lastname: Masmanidis
authors.forename: M L
authors.initials: ML
authors.lastname: Roukes