title: Tunable noise cross correlations in a double quantum dot.
abstract: We report measurements of the cross correlation between temporal current fluctuations in two capacitively coupled quantum dots in the Coulomb blockade regime. The sign of the cross-spectral density is found to be tunable by gate voltage and source-drain bias. We find good agreement with the data by including an interdot Coulomb interaction in a sequential-tunneling model.
authors.affiliation: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: D T
authors.initials: DT
authors.lastname: McClure
authors.forename: L
authors.initials: L
authors.lastname: Dicarlo
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: H-A
authors.initials: HA
authors.lastname: Engel
authors.forename: C M
authors.initials: CM
authors.lastname: Marcus
authors.forename: M P
authors.initials: MP
authors.lastname: Hanson
authors.forename: A C
authors.initials: AC
authors.lastname: Gossard