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Spin-dependent Josephson current through double quantum dots and measurement of entangled electron states

Choi, M. S. and Bruder, C. and Loss, D.. (2000) Spin-dependent Josephson current through double quantum dots and measurement of entangled electron states. Physical review B, Vol. 62, H. 20. pp. 13569-13572.

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Official URL: http://edoc.unibas.ch/dok/A5252855

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Abstract

We study a double quantum dot, each dot of which is tunnel coupled to superconducting leads. In the Coulomb blockade regime, a spin-dependent Josephson coupling between two superconductors is induced, as well as an antiferromagnetic Heisenberg exchange coupling between the spins on; the double dot that can be. tuned by the superconducting phase difference. We show that the correlated spin states-singlet or triplets-on the double dot can be probed via the Josephson current in a de-superconducting quantum interference device setup.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Bruder, Christoph and Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:14 Sep 2012 06:54
Deposited On:22 Mar 2012 13:57

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