Welcome to my homepage. I am a physicist specializing in the field
of quantum information theory.

In 2006 I finished a PhD at the University of Queensland under the
supervision of Michael
Nielsen. If you would like to have a look at my thesis, *"Reliable
Quantum Information Processing"*, you can download it
here.

Below you will find links to my scientific work, including papers,
posters and talks.

My email:

*Each title links to the appropriate page on arXiv.org where the
paper can be downloaded*

A. Lund, T. Ralph, H. Haselgrove, "Fault-Tolerant Linear Optical
Quantum Computing with Small-Amplitude Coherent States", *
Phys. Rev. Lett.* 100:030503 (2008)

H. Haselgrove, P. Rohde, "Trade-off between the
tolerance of located and unlocated errors in nondegenrate quantum
error-correcting codes", *Quant. Inf. Comp.* 8(5):0399-0410
(2008)

C. Dawson, H.
Haselgrove, M. Nielsen, “Noise thresholds for
optical cluster-state quantum computation”, *Phys. Rev. A*
73:052306 (2006)

C. Dawson, H.
Haselgrove, M. Nielsen, “Noise thresholds for
optical quantum computers”, *Phys. Rev. Lett.* 96:020501
(2006)

C. Dawson, H.
Haselgrove, A. Hines, D. Mortimer, M. Nielsen, T. Osborne, “Quantum computing and
polynomial equations over the finite field Z_{2}”, *
Quant. Inf. Comp.* 5(2):102-112 (2005)

H. Haselgrove, “Optimal state
encoding for quantum walks and quantum communication over spin systems”,
*Phys. Rev. A* 72:062326 (2005). See also online animations.

H. Haselgrove, M.
Nielsen, T. Osborne, “Entanglement,
correlations, and the energy gap in many-body quantum systems”, *Phys.
Rev. A* 69:032303 (2004)

A. Childs, H.
Haselgrove, M. Nielsen, “Lower bounds on the
complexity of simulating quantum gates”, *Phys. Rev. A*
68:052311 (2003)

H. Haselgrove, M.
Nielsen, T. Osborne, “Practicality of
time-optimal two-qubit Hamiltonian simulation”, *Phys. Rev. A*
68:042303 (2004)

H. Haselgrove, M. Nielsen, T. Osborne, “Quantum states far
from the energy eigenstates of any local Hamiltonian”, *Phys.
Rev. Lett.* 91:210401 (2003)

C. Hill, H. Haselgrove, "Universal quantum dynamics from two 2-local Hamiltonians", arXiv:0801.4487 (2008)

[PPT]
“Noise thresholds for optical quantum computers”, IBM Workshop on
Fault-Tolerant Quantum Computation, New York, 30 August 2005.

*( similar talks were also given on these occasions:
University of New Mexico, C.A.S. seminar, Albuquerque, 8 September 2005
; University of Queensland, QiSci group meeting, Brisbane, 30
September 2005 ; Australian Defence Force Academy, quantum electronics
group meeting, 7 June 2006 )*

[PPT] “Entanglement, correlation, and error-correction in the ground states of many-body systems”, Griffith University, Quantum theory seminar, Brisbane, 10 November 2003

[PPT] “Entanglement, correlations, and error-correction in the ground states of many-body systems”, Australian Institute of Physics Congress, Canberra, 1 February 2005

[PPT] “Optimal state encoding for quantum walks and quantum communication over spin systems”, Quantum Information Theory: Present Status and Future Directions, Cambridge University, UK, 26 August 2004.

[PPT] “Time-optimal two-qubit gate
simulation is impractical”, The 3^{rd} ESF Conference on
Quantum Information Theory and Quantum Computing, Erice, Italy, 16
March 2003.