Prof. Steven Flammia

Chief Investigator

University of Sydney

steven.flammia@sydney.edu.au

Professor Steven Flammia's research interests center around quantum information theory and applications of the theory to a broad range of topics, including condensed matter theory, topologically ordered phases, tensor networks, error correction, quantum optics, precision metrology, and classical statistical inference and machine learning, specifically compressed sensing. He has made important contributions to the study of characterization, verification, and validation of quantum devices.

Qualifications:

PhD, University of New Mexico, United States (2007)

BS, Pennsylvania State University, United States (2002)

Research Facilities:

Sydney Quantum Theory Lab

2020

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)

2019

Harper R., Flammia ST. 2019. Fault-Tolerant Logical Gates in the IBM Quantum Experience. Physical Review Letters. 122(8)

Helsen J, Wallman J, Flammia ST, Wehner S. 2019. Multiqubit randomized benchmarking using few samples. Physical Review A. 100(3)

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.

Harper R., Hincks I, Ferrie C, Flammia ST, Wallman J. 2019. Statistical analysis of randomized benchmarking. Physical Review A. 99(5)

Krastanov S, Zhou S, Flammia ST, Jiang L. 2019. Stochastic estimation of dynamical variables. Quantum Science and Technology. 4(3):035003.

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)

2017

Chubb CT, Flammia ST. 2017. Approximate symmetries of Hamiltonians. Journal of Mathematical Physics. 58(8):082202.

Burton S, Brell CG, Flammia ST. 2017. Classical simulation of quantum error correction in a Fibonacci anyon code. Physical Review A. 95(2)

Harper R., Flammia ST. 2017. Estimating the fidelity of T gates using standard interleaved randomized benchmarking. Quantum Science and Technology. 2(1):015008.

Riofrío C.A, Gross D., Flammia ST, Monz T., Nigg D., Blatt R., Eisert J.. 2017. Experimental quantum compressed sensing for a seven-qubit system. Nature Communications. 8:15305.

Harper R., Chapman RJ, Ferrie C, Granade C, Kueng R, Naoumenko D, Flammia ST, Peruzzo A. 2017. Explaining quantum correlations through evolution of causal models. Physical Review A. 95(4)

Flammia ST, Haah J, Kastoryano MJ, Kim IH. 2017. Limits on the storage of quantum information in a volume of space. Quantum. 1:4.

Robertson A, Granade C, Bartlett SD, Flammia ST. 2017. Tailored Codes for Small Quantum Memories. Physical Review Applied. 8(6)

2016

Kueng R, Long DM, Doherty AC, Flammia ST. 2016. Comparing Experiments to the Fault-Tolerance Threshold. Physical Review Letters. 117(17)

Bridgeman JC, Flammia ST, Poulin D. 2016. Detecting topological order with ribbon operators. Physical Review B. 94(20)

Ball H, Stace TM, Flammia ST, Biercuk MJ. 2016. Effect of noise correlations on randomized benchmarking. Physical Review A. 93(2)

2015

Cesare C, Landahl AJ, Bacon D, Flammia ST, Neels A. 2015. Adiabatic topological quantum computing. Physical Review A. 92(1)

Wallman J, Granade C, Harper R., Flammia ST. 2015. Estimating the coherence of noise. New Journal of Physics. 17(11):113020.

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)

Bacon D, Flammia ST, Harrow AW, Shi J. 2015. Sparse Quantum Codes from Quantum Circuits. the Forty-Seventh Annual ACMProceedings of the Forty-Seventh Annual ACM on Symposium on Theory of Computing - STOC '15. :327-334.

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)