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.
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 Z2”, 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)
“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 3rd ESF Conference on Quantum Information Theory and Quantum Computing, Erice, Italy, 16 March 2003.