Major Funding Provided By 
Prof. Stephen Bartlett
Professor Stephen Bartlett is pursuing fundamental research in the theory of quantum physics. His particular focus is on quantum information theory, including the theory of quantum computing, as well as the foundational issues of quantum mechanics.
Professor Bartlett completed his PhD in mathematical physics at the University of Toronto in 2000. Moving to Australia, he directed his research to the theory of quantum computing, first as a Macquarie University Research Fellow and then as an ARC Postdoctoral Research Fellow at The University of Queensland. Since 2005, he has lead a research program in theoretical quantum physics at University of Sydney, with interests spanning quantum computing, quantum measurement and control, quantum many-body systems, and the foundations of quantum theory.
Qualifications:
PhD, University of Toronto, Canada (2000)
MSc, University of Toronto, Canada (1996)
BSc (Hons), University of Waterloo, Canada (1995)
Graduate Certificate in Higher Education, University of Sydney, Australia (2007)
Research Facilities:
2020
2020
Webster P, Bartlett SD.
2020. Fault-tolerant quantum gates with defects in topological stabilizer codes. Physical Review A. 102(2)
Tuckett DK, Bartlett SD, Flammia ST, Brown BJ.
2020. Fault-Tolerant Thresholds for the Surface Code in Excess of 5% Under Biased Noise. Physical Review Letters. 124(13)
Roberts S, Bartlett SD.
2020. Symmetry-Protected Self-Correcting Quantum Memories. Physical Review X. 10(3)
2019
2019
Malinowski FK, Martins F, Smith TB, Bartlett SD, Doherty AC, Nissen PD, Fallahi S, Gardner GC, Manfra MJ, Marcus CM et al..
2019. Fast spin exchange across a multielectron mediator. Nature Communications. 10(1)
Ming Y, Lin C-T, Bartlett SD, Zhang W-W.
2019. Quantum topology identification with deep neural networks and quantum walks. npj Computational Materials. 5(1)
Yang C.H, Chan K.W, Harper R., Huang W., Evans T., Hwang J.CC, Hensen B., Laucht A., Tanttu T., Hudson F.E et al..
2019. Silicon qubit fidelities approaching incoherent noise limits via pulse engineering. Nature Electronics.
Tuckett DK, Darmawan AS, Chubb CT, Bravyi S, Bartlett SD, Flammia ST.
2019. Tailoring Surface Codes for Highly Biased Noise. Physical Review X. 9(4)
2018
2018
Frembs M, Roberts S, Bartlett SD.
2018. Contextuality as a resource for measurement-based quantum computation beyond qubits. New Journal of Physics. 20(10):103011.
Harvey S.P, Bøttcher C.GL, Orona L.A, Bartlett SD, Doherty AC, Yacoby A..
2018. Coupling two spin qubits with a high-impedance resonator. Physical Review B. 97(23)
Webster P, Bartlett SD.
2018. Locality-preserving logical operators in topological stabilizer codes. Physical Review A. 97(1)
Saadatmand S.N, Bartlett SD, McCulloch IP.
2018. Phase diagram of the quantum Ising model with long-range interactions on an infinite-cylinder triangular lattice. Physical Review B. 97(15)
Bartlett SD, Brennen G, Miyake A.
2018. Robust symmetry-protected metrology with the Haldane phase. Quantum Science and Technology. 3(1):014010.
Malinowski FK, Martins F, Smith TB, Bartlett SD, Doherty AC, Nissen PD, Fallahi S, Gardner GC, Manfra MJ, Marcus CM et al..
2018. Spin of a Multielectron Quantum Dot and Its Interaction with a Neighboring Electron. Physical Review X. 8(1)
2017
2017
Simmons AW, Wallman J, Pashayan H, Bartlett SD, Rudolph T.
2017. Contextuality under weak assumptions. New Journal of Physics. 19(3):033030.
Elman SJ, Bartlett SD, Doherty AC.
2017. Long-range entanglement for spin qubits via quantum Hall edge modes. Physical Review B. 96(11)
Roberts S, Yoshida B, Kubica A, Bartlett SD.
2017. Symmetry-protected topological order at nonzero temperature. Physical Review A. 96(2)
Robertson A, Granade C, Bartlett SD, Flammia ST.
2017. Tailored Codes for Small Quantum Memories. Physical Review Applied. 8(6)
Bridgeman JC, Bartlett SD, Doherty AC.
2017. Tensor networks with a twist: Anyon-permuting domain walls and defects in projected entangled pair states. Physical Review B. 96(24)
2016
2016
Bartlett SD.
2016. Atomic physics: A milestone in quantum computing. Nature. 536(7614):35-36.
Alexander RN, Turner PS, Bartlett SD.
2016. Randomized benchmarking in measurement-based quantum computing. Physical Review A. 94(3)
Darmawan AS, Bartlett SD.
2016. Spectral properties for a family of two-dimensional quantum antiferromagnets. Physical Review B. 93(4)
Jochym-O'Connor T, Bartlett SD.
2016. Stacked codes: Universal fault-tolerant quantum computation in a two-dimensional layout. Physical Review A. 93(2)
2015
2015
Pashayan H, Wallman J, Bartlett SD.
2015. Estimating Outcome Probabilities of Quantum Circuits Using Quasiprobabilities. Physical Review Letters. 115(7)
Bridgeman JC, O'Brien A, Bartlett SD, Doherty AC.
2015. Multiscale entanglement renormalization ansatz for spin chains with continuously varying criticality. Physical Review B. 91(16)
Fogarty M.A, Veldhorst M., Harper R., Yang C.H, Bartlett SD, Flammia ST, Dzurak A.S.
2015. Nonexponential fidelity decay in randomized benchmarking with low-frequency noise. Physical Review A. 92(2)
Bartlett SD.
2015. Quantum metrology: The sensitive side of a spin. Nature Nanotechnology.
Webster P, Bartlett SD, Poulin D.
2015. Reducing the overhead for quantum computation when noise is biased. Physical Review A. 92(6)
Williamson DJ, Bartlett SD.
2015. Symmetry-protected adiabatic quantum transistors. New Journal of Physics. 17(5):053019.
O'Brien A, Bartlett SD, Doherty AC, Flammia ST.
2015. Symmetry-respecting real-space renormalization for the quantum Ashkin-Teller model. Physical Review E. 92(4)
Karanjai A, Cavalcanti EG, Bartlett SD, Rudolph T.
2015. Weak values in a classical theory with an epistemic restriction. New Journal of Physics. 17(7):073015.
2014
2014
Palmer MC, Girelli F, Bartlett SD.
2014. Changing quantum reference frames. Physical Review A. 89(5)
Darmawan AS, Bartlett SD.
2014. Graph states as ground states of two-body frustration-free Hamiltonians. New Journal of Physics. 16(7):073013.
Brell CG, Bartlett SD, Doherty AC.
2014. Perturbative 2-body parent Hamiltonians for projected entangled pair states. New Journal of Physics. 16(12):123056.
Bartlett SD.
2014. Quantum computing: Powered by magic. Nature.
Shulman M.D, Harvey S.P, Nichol J.M, Bartlett SD, Doherty AC, Umansky V., Yacoby A..
2014. Suppressing qubit dephasing using real-time Hamiltonian estimation. Nature Communications. 5:5156.
2013
2013
Sentís G, Gendra B, Bartlett SD, Doherty AC.
2013. Decomposition of any quantum measurement into extremals. Journal of Physics A: Mathematical and Theoretical. 46(37):375302.
Else DV, Bartlett SD, Doherty AC.
2013. Hidden symmetry-breaking picture of symmetry-protected topological order. Physical Review B. 88(8)
Renes JM, Miyake A, Brennen G, Bartlett SD.
2013. Holonomic quantum computing in symmetry-protected ground states of spin chains . New Journal of Physics. 15(2):025020.
Medford J., Beil J., Taylor J.M, Bartlett SD, Doherty AC, Rashba E.I, DiVincenzo D.P, Lu H., Gossard A.C, Marcus C.M.
2013. Self-consistent measurement and state tomography of an exchange-only spin qubit. Nature Nanotechnology. 8(9):654-659.
Takahashi M, Bartlett SD, Doherty AC.
2013. Tomography of a spin qubit in a double quantum dot. Physical Review A. 88(2)
Brown BJ, Bartlett SD, Doherty AC, Barrett S.
2013. Topological Entanglement Entropy with a Twist. Physical Review Letters. 111(22)
2012
2012
Darmawan AS, Brennen G, Bartlett SD.
2012. Measurement-based quantum computation in a two-dimensional phase of matter. New Journal of Physics. 14(1):013023.
Wallman J, Bartlett SD.
2012. Non-negative subtheories and quasiprobability representations of qubits . Physical Review A. 85(6)
Sergeevich A, Bartlett SD.
2012. Optimizing qubit Hamiltonian parameter estimation algorithm using PSO. 2012 IEEE Congress on Evolutionary Computation (CEC)2012 IEEE Congress on Evolutionary Computation. :1-3.
Else DV, Bartlett SD, Doherty AC.
2012. Symmetry protection of measurement-based quantum computation in ground states. New Journal of Physics. 14(11):113016.
Else DV, Schwarz I, Bartlett SD, Doherty AC.
2012. Symmetry-Protected Phases for Measurement-Based Quantum Computation. Physical Review Letters. 108(24)
2011
2011
Sergeevich A, Chandran A, Combes J, Bartlett SD, Wiseman HM.
2011. Characterization of a qubit Hamiltonian using adaptive measurements in a fixed basis. Physical Review A. 84(5)
Brell CG, Flammia ST, Bartlett SD, Doherty AC.
2011. Toric codes and quantum doubles from two-body Hamiltonians. New Journal of Physics. 13(5):053039.
Storing and Retrieving Spin-Order in Arrays of Spin-1/2 Particles
Zachary Cristina
Doctor Philosophy - Principal Advisor
Foundations of quantum information
Angela Karanjai
Doctor Philosophy - Principal Advisor
Tensor Network Methods for Quantum Phases
Dr. Jacob Bridgeman
Doctor Philosophy - Principal Advisor
Simulating quantum systems
Hakop Pashayan
Doctor Philosophy - Principal Advisor
Designing Bosonic resources for quantum computation
Rafael Alexander
Doctor Philosophy - Principal Advisor
Symmetry protected topological order in cluster states
Sam Roberts
Doctor Philosophy - Principal Advisor
Exchange coupling of spin qubits via a system of electronic spins
Thomas Smith
Honours project - Principal Advisor
Fault tolerant methods for quantum error correcting codes in two dimensional architectures
David Tuckett
Doctor Philosophy - Principal Advisor
A Candidate Self-Correcting Model of the Gauge Colour Code
Campbell McLauchlan
Honours project - Principal Advisor
Fault-Tolerant Quantum Computing with Topological Error Correcting Codes
Paul Webster
Honours project - Principal Advisor
Exchange-based logic gates for spin qubit computation
(2015) Matthew Allen
Honours project - Principal Advisor
Major funding support
The Australian Research Council Centre of Excellence for Engineered Quantum Systems (EQUS) acknowledges the Traditional Owners of Country throughout Australia and their continuing connection to lands, waters and communities. We pay our respects to Aboriginal and Torres Strait Islander cultures and to Elders past and present.
© 2020 Australian Research Council Centre of Excellence for Engineered Quantum Systems