

Associate Professor & Reader of Phyics University of Melbourne
Program Manager Device Modelling Centre for Quantum Computer Technology
JSPS Fellow (199091)
Research Interests
My early work in nonperturbative many body systems[1] and lattice gauge theory[2]  which produced a new and surprising connection between the Lanczos tridiagonal form of a Hamiltonian and lowest states of the extensive system[3]  was a natural starting point to develop my interest in quantum computing (QC). My present work focuses mainly on theoretical aspects of the implementation of quantum computing in the solidstate. Given the complexities of donor systems in semiconductors, detailed theoretical modelling of the quantum systems proposed as QC architectures is required by experimentalists not only to fabricate and develop existing schemes, but also to develop novel architectures for solidstate quantum computing. To this end, in the Device Modelling Program we work on a large number of problems spanning solidstate buried dopant quantum computing.
At present my work focuses on the physics and modelling of the Kane quantum computer[46] (gate operations, the donor electron wave function, decoherence and spin readout), complimentary buried dopant architectures[7] (buried dopant charge qubit, decoherence due to charge traps), and quantum algorithms[8,9] (implementations on linear arrays, effect of imperfect gates, quantum error correction).
Select papers

L.C.L. Hollenberg, "Plaquette Expansion in Lattice Hamiltonians", Physical Review D47, 1640 (1993).

L.C.L. Hollenberg, "First Order Analytic Diagonalization of Lattice QCD", Physical Review D50, 6917 (1994).

L.C.L. Hollenberg and N.S. Witte, "Analytic Solution for the Ground State Energy of the Extensive ManyBody Problem", Physical Review B54, 16309 (1996).

C.J. Wellard, L.C.L. Hollenberg, and H.C. Pauli, "NonAdiabatic CNOT Gate for the Kane Quantum Computer" Physical Review A65, 032303 (2002).

C.J Wellard and L.C.L. Hollenberg,"Thermal noise in a solid state quantum computer" Journal of Physics D: Applied Physics 35, 2499 (2002).

A.G. Fowler, C.J. Wellard, and L.C.L. Hollenberg, "Error rate of the Kane quantum computer controlledNOT gate in the presence of dephasing" Physical Review A 67,012301 (2003).

L.C.L. Hollenberg, A.S. Dzurak, C.J. Wellard, A.R. Hamilton, D.J. Reilly, G.J. Milburn, R.G. Clark,"Chargebased quantum computing using single donors in semiconductors", condmat/0306235

L.C.L. Hollenberg, "Fast Quantum Search Algorithms in Protein Sequence Comparison  Quantum Bioinformatics",Physical Review E62, 7532 (2000).

A.G. Fowler and L.C.L. Hollenberg,"Robustness of Shor's algorithm with finite rotation control", quantph/0306018.
Contact details
Mailing Address 
Centre for Quantum Computer Technology
School of Physics
University of Melbourne,
Victoria 3010,
Australia

Email 

Telephone 
+61 3 83444210 
Facsimile 
+61 3 8344 4783 
