title: Towards quantum entanglement in nanoelectromechanical devices.
abstract: We study arrays of mechanical oscillators in the quantum domain and demonstrate how the motions of distant oscillators can be entangled without the need for control of individual oscillators and without a direct interaction between them. These oscillators are thought of as being members of an array of nanoelectromechanical resonators with a voltage being applicable between neighboring resonators. Sudden nonadiabatic switching of the interaction results in a squeezing of the states of the mechanical oscillators, leading to an entanglement transport in chains of mechanical oscillators. We discuss spatial dimensions, Q factors, temperatures and decoherence sources in some detail, and find a distinct robustness of the entanglement in the canonical coordinates in such a scheme. We also briefly discuss the challenging aspect of detection of the generated entanglement.
authors.affiliation: Institut für Physik, Universität Potsdam, Am Neuen Palais 10, D-14469 Potsdam, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Eisert
authors.forename: M B
authors.initials: MB
authors.lastname: Plenio
authors.forename: S
authors.initials: S
authors.lastname: Bose
authors.forename: J
authors.initials: J
authors.lastname: Hartley