Characterization of a Differential Radio-Frequency Single-Electron Transistor

J. F. Schneiderman, P. Delsing, M. D. Shaw, H. M. Bozler, P. M. Echternach

Published 2005-07-18Version 1

We have fabricated and characterized a new type of electrometer that couples two parallel single-electron transistors (SETs) to a radio-frequency tank circuit for use as a differential RF-SET. We demonstrate operation of this device in summing, differential, and single-SET operation modes, and use it to measure a Coulomb staircase from a differential single Cooper-pair box. In differential mode, the device is sensitive to uncorrelated input signals while screening out correlated ones.