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Towards quantum entanglement in nanoelectromechanical devices

Eisert, J; Plenio, MB; Bose, S; Hartley, J; (2004) Towards quantum entanglement in nanoelectromechanical devices. PHYS REV LETT , 93 (19) , Article 190402. 10.1103/PhysRevLett.93.190402. Green open access

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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.

Type: Article
Title: Towards quantum entanglement in nanoelectromechanical devices
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.93.190402
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.93.190402
Language: English
Additional information: 2004 The American Physical Society
Keywords: SINGLE-ELECTRON TRANSISTOR, SYSTEMS, DISSIPATION, RESONATORS, MOTION, NOISE
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/116890
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