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Lecture Rolf Brenner

Rooster

WanneerWaar
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
Start: 15.00
Location: FWN-Building 5113.0201
Host: Caspar H. van der Wal
Telephone: +31 50 363 4555

Abstract

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.

Laatst gewijzigd:22 oktober 2012 14:30