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Entanglement of nanoelectromechanical oscillators by Cooper-pair tunneling
Stockholm University, Faculty of Science, Department of Physics.
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 88, no 3, 035441- p.Article in journal (Refereed) Published
Abstract [en]

We demonstrate that entanglement of two macroscopic nanoelectromechanical resonators-coupled to each other via a common detector, a tunnel junction-can be generated by running a current through the device. We introduce a setup that overcomes generic limitations of proposals suggesting to entangle systems via a shared bath. At the heart of the proposal is an Andreev entangler setup, representing an experimentally feasible way of entangling two nanomechanical oscillators. Instead of relying on the coherence of a (fermionic) bath, in the Andreev entangler setup, a split Cooper pair that coherently tunnels to each oscillator mediates their coupling and thereby induces entanglement between them. Since entanglement is in each instance generated by Markovian and non-Markovian noisy open system dynamics in an out-of-equilibrium situation, we argue that the present scheme also opens up perspectives to observe dissipation-driven entanglement in a condensed-matter system.

Place, publisher, year, edition, pages
2013. Vol. 88, no 3, 035441- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-93183DOI: 10.1103/PhysRevB.88.035441ISI: 000322529100004OAI: oai:DiVA.org:su-93183DiVA: diva2:645858
Note

AuthorCount:4;

Available from: 2013-09-05 Created: 2013-09-04 Last updated: 2017-12-06Bibliographically approved

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