The director of the Melbourne Node of the CQCT is Prof. David Jamieson

Mission Objectives and Goals

The goal of the Melbourne node of the Centre of Excellence - Centre for Quantum Computer Technology (CQCT) is to develop technologies for the placement and detection of Phosphorus atoms in Silicon as part of the realization of a prototype Kane quantum computer, and theoretical modelling of gate operations.

The key strategies for achieving this goal are:

• The use of direct ion implantation for the placement of P atoms.
• Registration of the P atoms using resists or electrical transients.
• Detection of single P atoms using scanning probe microscopies.
• Design methods of monitoring ultra-low levels of damage in Si and optimization of procedures for the removal of damage.
• Modeling of the implantation process and device performance.

• Variable temperature, ultrahigh-vacuum Scanning Tunneling and Atomic Force Microscope.
• Single P ion implanter
• Pelletron accelerator and ion microprobe.
• Focused ion beam source.
• Near field probe.
  

The key experimental objectives (2001-2003) are:

• Demonstration of on-chip detection of keV P ions.
• Demonstration of the signature of P atoms on or buried below Si surfaces. This is to be accomplished by the use of low energy ion implantation followed by imaging using the Scanning Probe Microscope.
• Demonstration of feasibility of a step/repeat method for the realization of arrays of precisely placed P atoms on Si surfaces.
• Evaluation of the local environment of the buried P atom using deep level transient spectroscopy, and investigation of ion tracks.
• Development of alternative methods of single spin detection using miniature SQUIDS and diamond based optical centres.