title: Carbon nanotubes as cooper-pair beam splitters.
abstract: 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.
authors.affiliation: Ecole Normale Supérieure, Laboratoire Pierre Aigrain, 24, rue Lhomond, 75231 Paris Cedex 05, France.
authors.forename: L G
authors.initials: LG
authors.lastname: Herrmann
authors.forename: F
authors.initials: F
authors.lastname: Portier
authors.forename: P
authors.initials: P
authors.lastname: Roche
authors.forename: A Levy
authors.initials: AL
authors.lastname: Yeyati
authors.forename: T
authors.initials: T
authors.lastname: Kontos
authors.forename: C
authors.initials: C
authors.lastname: Strunk