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Carbon Nanotubes as Cooper-Pair Beam Splitters

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Herrmann, Lorenz ; Portier, F. ; Roche, P. ; Levy Yeyati, A. ; Kontos, T. ; Strunk, Christoph
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Date of publication of this fulltext: 04 Mar 2010 14:49


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.

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