Carbon nanotubes as cooper-pair beam splitters

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 in situ. This opens an avenue to more so...

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Bibliographic Details
Published inPhysical review letters Vol. 104; no. 2; p. 026801
Main Authors Herrmann, L G, Portier, F, Roche, P, Yeyati, A Levy, Kontos, T, Strunk, C
Format Journal Article
LanguageEnglish
Published United States 15.01.2010
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Summary: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 in situ. This opens an avenue to more sophisticated quantum opticslike experiments with spin entangled electrons.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.104.026801