Jonathan Baugh

Professor, Chemistry

Research interests: semiconductor quantum devices, quantum transport, spin-based quantum information processing

Biography

Professor Jonathan Baugh is working toward the physical realization of quantum information processors in solid-state systems, using the property of spin to encode and manipulate quantum information.

Baugh believes that the power of quantum information lies in the mathematical structure of quantum mechanics, in which the non-classical concepts of superposition, entanglement and quantum parallelism arise. He is a proponent of taking the ideas and concepts of quantum information theory and implementing them in the laboratory, and sees this as a crucial aspect of the development of quantum technologies that will dominate in the 21st century.

Baugh completed his PhD in Physics in 2001 at the University of North Carolina at Chapel Hill. Part of his PhD research on nuclear dipole-dipole interactions in nanoscale-confined fluids was published in Science in 2001. Baugh was a Post-Doctoral Fellow at the Institute for Quantum Computing (IQC) from 2002-2005, and a Visiting Researcher and Japan Society for the Promotion of Science (JSPS) Fellow at Tokyo University in the Department of Applied Physics in 2006-7. Baugh is a Professor in the Department of Chemistry and is cross-appointed to Physics and Astronomy at the University of Waterloo.

Education

PhD, Physics, University of North Carolina (Chapel Hill), 2001
BSc, Physics, University of Tennessee (Chattanooga), 1995

Jonathan Baugh

Research

Developing scalable approaches to building quantum processors

Professor Baugh joined Institute for Quantum Computing (IQC) as a faculty member in 2007, where he is a group leader in the Coherent Spintronics Lab. The aim of the lab is to develop scalable approaches to building quantum processors based on electron and nuclear spins. Current projects focus on coherent control of single electron spins in quantum dots (e.g. artificial atoms/molecules), hyperfine coupled electron-nuclear spin systems, single molecule magnets and solid-state nuclear magnetic resonance.

Developing techniques for scalable Quantum Information Processing (QIP)

The goal of the Coherent Spintronics Lab’s experimental program is to develop prototypes and quantum control techniques necessary for scalable QIP. Particular focus is on using the particle property of spin to encode quantum information in a robust way. Realizing spin-based quantum bits (qubits) in solid-state systems offers a technologically attractive path to scalable quantum devices; this approach is reminiscent of (and builds on) the semiconductor microelectronics industry, and benefits from cutting edge device technologies now being developed based on novel nanomaterials such as semiconductor nanowires and carbon nanotubes. The research group is establishing a comprehensive program aimed at addressing the fundamental and technical challenges to realizing quantum building block devices. This research will expand fundamental scientific knowledge and create new platforms for technological innovation.

Research interests

Spin qubits
Tunable semiconductor quantum dots
Low temperature quantum transport
Electron and nuclear magnetic resonance
Experimental quantum information processing and quantum control

Publications

Recent publications include:

“Supercurrent interference in semiconductor nanowire Josephson junctions”, P. Sriram, S. S. Kalantre, K. Gharavi*, J. Baugh and B. Muralidharan, Phys. Rev. B 100, 155431 (2019).
“Few-electrode design for silicon MOS quantum dots”, E. B. Ramirez*, F. Sfigakis*, S. Kudva*, J. Baugh, Semiconductor Sci. and Tech. 35, 015002 (2019).
“Understanding resonant charge transport through weakly coupled single-molecule junctions”, J. O. Thomas, B. Limburg, J. K. Sowa, K. Willick*, J. Baugh, G. A. D. Briggs, E. M. Gauger, H. L. Anderson, J. A. Mol, Nature Communications 10, 4628 (2019).
“Hillock-free and atomically smooth InSb QWs grown on GaAs substrates by MBE”, Y. Shi, E. Bergeron*, F. Sfigakis*, J. Baugh and Z. Wasilewski, Journal of Crystal Growth 513, 15 (2019).
“Network architecture for a topological quantum computer in silicon”, B. Buonacorsi*, Z. Cai, E. B. Ramirez*, K. S. Willick*, S. M. Walker*, J. Li*, B. D. Shaw*, X. Xu, S. C. Benjamin and J. Baugh, Quantum Science and Technology 4, 025003 (2019).
“Non-equilibrium Green’s function study of magneto-conductance signatures in clean and disordered nanowires”, A. Lahiri, K. Gharavi*, J. Baugh, and B. Muralidharan, Phys. Rev. B 98, 125417 (2018).
“Closed-loop quantum optimal control in a solid-state two-qubit system”, G. Feng, F. H. Cho*, H. Katiyar, J. Li, D. Lu, J. Baugh, R. Laflamme, Phys. Rev. A 98, 052341 (2018).
“Probing the non-linear transient response of a carbon nanotube mechanical oscillator”, K. Willick*, X. Tang, J. Baugh, Applied Physics Letters 111, 223108 (2017).
“Enhancing quantum control by bootstrapping a quantum processor of 12 qubits”, D. Lu, K. Li, J. Li, H. Katiyar, A. J. Park, G. Feng*, T. Xin, H. Li, G. L. Long, A. Brodutch, J. Baugh, B. Zeng, R. Laflamme, npj Quantum Information 3, 45 (2017).
“Double quantum dot memristor”, Y. Li, G. W. Holloway*, S. C. Benjamin, G. A. D. Briggs, J. Baugh, J. A. Mol, Phys Rev. B 96, 075446 (2017).
“Nb/InAs nanowire proximity junctions from Josephson to quantum dot regimes”, K. Gharavi*, G. Holloway*, R. R. LaPierre, J. Baugh, Nanotechnology 28, 085202 (2017).
“Estimating the coherence of noise in quantum control of a solid-state qubit”, G. Feng*, B. Buonacorsi*, J. J. Wallman, F. H. Cho*, D. Park*, T. Xin, D. Lu, J. Baugh and R. Laflamme, Phys. Rev. Lett. 117, 260501 (2016).
“Readout of Majorana parity states using a quantum dot”, K. Gharavi*, D. Hoving and J. Baugh, Phys. Rev. B 94, 155417 (2016).
“Direct evidence of solution-mediated superoxide transport and organic radical formation in sodium-oxygen batteries”, C. Xia, R. Fernandes, F. H. Cho, N. Sudhakar, B. Buonacorsi*, S. Walker*, M. Xu, J. Baugh and L. F. Nazar, J. Am. Chem. Soc. 138, 11219 (2016).
“Chiral Quantum Walks”, D. Lu*, J. D. Biamonte, J. Li, H. Li, T. H. Johnson, V. Bergholm, M. Faccin, Z. Zimboras, R. Laflamme. J. Baugh, S. Lloyd, Phys. Rev. A 93(4), 042302 (2016).
“Tomography is necessary for universal detection of entanglement for generic states”, D. Lu*, T. Xin, N. Yu, Z. Ji, J. Chen, G. Long, J. Baugh, X. Peng, B. Zheng, R. Laflamme, Phys. Rev. Lett. 116 (23), 230501 (2016).