Tunable noise cross correlations in a double quantum dot.
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.
McClure
D T
DT
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Dicarlo
L
L
Zhang
Y
Y
Engel
H-A
HA
Marcus
C M
CM
Hanson
M P
MP
Gossard
A C
AC