Lecture Rolf Brenner
|24 September 2004||FWN-Building 5113.0201, Nijenborgh 4, 9747 AG, Groningen|
|Speaker:||Dr. Rolf Brenner|
|Affiliation:||University of New South Wales, Sydney, Australia|
|Title:||DISET (Double-island single-electron transistor)|
|Date:||Fri Sep 24, 2004|
|Host:||Caspar H. van der Wal|
|Telephone:||+31 50 363 4555|
A novel, nanoscale detector for charge motion in the solid state is introduced: a double-island single-electron transistor (DISET). Such a detector may be used in solid-state quantum computers and quantum-dot cellular automata, where readout of a computational result often requires ultra-sensitive charge detectors capable of sensing the motion of single charges on fast timescales.
Using a DISET, detection of single-electron transfer from one dot to the other in a double-dot is demonstrated. In addition, conductance suppression in this novel detector allows the detection of electrostatically degenerate charge configurations of the double-dot. Finally, results are presented for a DISET operated at radio-frequencies (rf-DISET). A very good charge sensitivity of 5.10-6 e/sqrt(Hz) and detection of small charge signals on microsecond timescales are reported.
|Last modified:||22 October 2012 2.30 p.m.|