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Carbon Nanotubes as Cooper-Pair Beam Splitters

Source: Phys. Rev. Lett. 104, 026801 (2010); doi:10.1103/PhysRevLett.104.026801

Published 11 January 2010

PACS
  • 73.23.-b
    Electronic transport in mesoscopic systems
  • 73.63.Fg
    Nanotubes (electronic transport)
  • YEAR: 2009
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
L. G. Herrmann,1,2,5 F. Portier,3 P. Roche,3 A. Levy Yeyati,4 T. Kontos,1,2 and C. Strunk5
1Ecole Normale Suprieure, Laboratoire Pierre Aigrain, 24, rue Lhomond, 75231 Paris Cedex 05, France
2CNRS, UMR 8551, Laboratoire associ aux universits Pierre et Marie Curie et Denis Diderot, Paris, France
3Service de physique de ltat Condens, CEA, 91192 Gif-sur-Yvette, France.
4Departamento de Fsica Terica de la Materia Condensada C-V, Universidad Autnoma de Madrid, E-28049 Madrid, Spain
5Institut fr experimentelle und angewandte Physik, Universitt Regensburg, Universittsstr.31, 93040 Regensburg, Germany
We report on conductance measurements in carbon nanotube based double quantum dots connected to two normal electrodes and a central superconducting finger. By operating our devices as beam splitters, we provide evidence for crossed Andreev reflections tunable insitu. This opens an avenue to more sophisticated quantum opticslike experiments with spin entangled electrons. ©2010 The American Physical Society
History: Received 16 September 2009; published 11 January 2010
Permalink: http://link.aps.org/abstract/PRL/v104/e026801
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