Quantum Computation
 |
The School of Physical Sciences hosts a node of the ARC Centre of Excellence for Quantum Computer Technology. The UQ node includes closely integrated theoretical and experimental research programs and is is supported by the ARC, the US Government, and the Queensland State Government. The total budget for the UQ node is in excess of $2M per annum.
The quantum optics program is primarily concerned with the implementation of the linear optical quantum computing (LOQC) scheme proposed by us and collaborators in the US. This resulted in the demonstration in 2003 of an LOQC CNOT gate, a key element of quantum computing architectures. The quantum dots program is focused on microcavity QED with semiconductor nanocrystals (CdS, PbS). We are currently using whispering gallery modes of a silica microsphere and moving to toroidal modes of a pillar silica structure.
The quantum optics theory program is developing new schemes for optical quantum information processing including coherent state coding, LOQC, nonlinear optical quantum computing and quantum frequency multiplexing of quantum information. In a collaboration with Michael Nielsen's group, we are studying optical cluster state quantum computing. The quantum information theory program provides theoretical underpinning of all the experimental programs in the centre. In collaboration with the UQ condensed matter theory group we are investigating long range order in condensed phases using tools of quantum information theory. In a collaboration with HP Bristol and Cambridge, we are determining the ultimate sources of decoherence for superconducting phase qubits.
Members of the CQCT are regularly invited to attend major international conferences in the field. Milburn is a member of the US Government's Technical Experts Panel developing the Road Map for Quantum Computer Technology.
Faculty
Prof. Gerard Milburn
Prof Halina Rubinsztein-Dunlop
A/Prof Norman Heckenberg
A/Prof Tim Ralph
Dr Andrew White
Dr Geoff Pryde
Dr Jeremy O'Brien
Dr Alexei Gilchrist
Group
6 postdocs and 12 PhD students.
Collaborations at UQ
Professor M Nielsen, Professor Ross Mckenzie
Collaborations outside UQ
Bristol University, UK.
Cambridge University, UK.
Oxford University,UK.
National Institute for Informatics, Japan.
Applied Physics Laboratory, USA.
University of New Mexico, USA.
University of Illinois, USA.
Caltech, USA.
University of British Columbia,. Canada.
University of Waterloo, Canada
Australian National University
University of New South Wales
University of Melbourne
Griffith University.
Selected recent publications (with citations)
[269] (2000) Knill, Laflamme and Milburn, Nature409, 6816
[32] (2003) O'Brien, Pryde, White, Ralph, Branning, Nature426, 264.
Other Activities
Four patents.
Hosted NSF/AAS joint workshop on quantum computation, 2003.