Curriculum Vitae — Dr. Joel Klassen
Employment
2019 - Present: Senior Quantum Scientist, Phasecraft Ltd., London UK
2017 - 2019: Postdoctoral Researcher, Terhal group, QuTech, TU Delft.
Education
2013-2017: PhD - Physics, The University of Guelph in association with the Institute for Quantum Computing. Thesis: Uniqueness and Existence in the Quantum Marginal Problem.
2012-2013: Masters of Science (Transferred to PHD) - Physics, The University of Guelph in association with the Institute for Quantum Computing.
2005-2011: Bachelor of Science, Honours - Physics, Simon Fraser University.
Refereed Publications
2021: Charles Derby, Joel Klassen, Johannes Bausch, Toby Cubitt Compact fermion to qubit mappings Physical Review B
2020: Joel Klassen, Milad Marvian, et al. Hardness and ease of curing the sign problem for two-local qubit Hamiltonians SIAM Journal on Computing
2019: Joel Klassen, Barbara Terhal, Two-local qubit Hamiltonians: when are they stoquastic? Quantum
2017: Tao Xin, Dawei Lu, Joel Klassen et. al., Quantum State Tomography via Reduced Density Matrices, Phys. Rev. Lett.
2015: Joel Klassen, Xiao-Gang Wen, Topological degeneracy (majorana zero-mode) and 1+1d fermionic topological order in a magnetic chain on superconductor via spontaneous Z2 f symmetry breaking, Journal of Physics: Condensed Matter
2013: Joel Klassen, Jianxin Chen, and Bei Zeng, Universal Entanglers for Bosonic and Fermionic Systems. 8th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2013), Leibniz International Proceedings in Informatics (LIPIcs)
Preprints
2022: Riley Chien, Joel Klassen, Optimizing fermionic encodings for both Hamiltonian and hardware
2022: L Clinton et al. Towards near-term quantum simulation of materials
2021: Clinton, Bausch, Klassen, Cubitt Phase Estimation of Local Hamiltonians on NISQ Hardware
2020: M Ioannou et al. Sign-curing local Hamiltonians: Termwise versus global stoquasticity and the use of Clifford transformations
Talks
2021: A Compact Fermion to Qubit Mapping, QIP 2021
2019/2018: When is a Hamiltonian Stoquastic?, TU Delft, MIT, QIP 2019, QuSoft, Leiden Work-shop Mathematics of QIT.
2017/2016: An Introduction to the Quantum Marginal Problem, TU Delft, Oxford, ICFO
2016: Quantum State Tomography via Reduced Density Matrices, FU Berlin, RWTH Aachen, IQC, University of Guelph, Oxford.
2015: The Symmetric Extendibility Problem, IQC
2014: What is a Quantum Fluctuation?, IQC
2014: New Directions in Pure Symmetric Extendibility, University of Guelph.
2014: Universal Entanglers for Bosonic and Fermionic Systems, IQC.
Organizing Committees
2022: Mini Workshop on industial quantum error mitigation, UCL
2018: Fysica 2018, Utrecht University.
2017-2018: QIP 2018, TU Delft.
2016: Mini Workshop on Quantum Information, The University of Guelph.
2015: Workshop on Quantum Marginals and Numerical Ranges, The University of Guelph.
2014: The 11th Annual Canadian Quantum Information Student Conference, The University of Guelph.
Awards
2016-2017: Ontario Graduate Scholarship, $15000.
2015-2016: Ontario Graduate Scholarsip, $15000.
2014: Queen Elizabeth II Graduate Scholarship in Science and Technology, $5000.
2012-2017: Dean’s Scholarship
Teaching
2019: Lecturer, Quantum Information Theory, TU Delft
2018-2019: Co-Supervisor, Masters Student: Marios Ioannou, TU Delft.
2018: Teaching Assistant, Quantum Hardware, TU Delft.
2012-2017: Teaching Assistant, University of Guelph.
Outreach
2019: BEST Delft, Guest Lecture, A Gentle Introduction to Quantum Computing, TU Delft.
2016: Our Quantum World Blog, Blog Post - Tomography turns out to be harder than expected, IQC
2015: Our Quantum World Blog, Blog Post - On Weirdness, IQC.
2015: Canadian Association of Girls in Science, Volunteer Educator, IQC
2013: Brainstem, Volunteer Educator, The Perimeter Institute.