Experience
Postdoctoral Appointee (Aug. 2022 - present)
Center for Nanoscale Materials - Argonne National Laboratory
- Investigated electronic structure and optical properties of helical van der Waals heterostructures
- Developed high-performance simulations utilizing density functional theory and tight-binding models
- Advanced analytic theory of electronic structure properties in helical symmetry materials
Graduate Research Assitant (June 2016 - July 2022)
Missouri University of Science and Technology
- Studied effects of disorder on superfluid-insulator quantum phase transitions and dynamical properties of the relevant Higgs/Goldstone modes
- Developed high-performance Monte Carlo simulations of disordered Bose-Hubbard model of superfluid-insulator systems
- Created custom suite of data analysis tools for analytic continuation, statistical analysis, linear regression, plotting, and animation
- Delivered group seminars on research and high-performance computing topics
- Authored four publications in Physical Review B and Letters
- Twice recognized in department-wide research competition (First place honors 2018/2021)
Visiting Research Assistant (Sept. 2019 - Mar. 2020)
University of Regensburg
- Developed numerical simulation of light-matter interactions in topological insulator materials utilizing semiconductor-Bloch equation techniques
- Contributed to publications in Nature and Physical Review B
- Collaborated closely with experimental group to guide methods
- Recognized in department-wide research competition (First place honors 2020)
Graduate Teaching Assistant (Aug. 2017 - May 2021)
Missouri University of Science and Technology
- Instructed undergraduate electromagnetism and classical mechanics laboratory courses
- Taught four semesters with approximately 100 students each
- Delivered lectures on theoretical background and experimental measurements
- Provided detailed notes, diagrams, and video lectures of experimental techniques
- Guided extracurricular one-on-one tutoring sessions
Education
Ph.D Physics (Defending 2023)
Missouri University of Science and Technology
Dissertation: “Quantum Critical Behavior and Dynamics of the Superfluid-Mott Glass Transition”
B.S Physics (2015)
Missouri University of Science and Technology
Skills
Programming: Python (numpy, scipy, pandas, matlplotlib), Fortran, C++, High-performance computing (MPI, Torque, Slurm), Linux/Unix systems, Machine learning (scikit-learn, keras), git/github
Methods: quantum Monte Carlo, density functional theory (GPAW, ASE), tight-binding methods, solid-state optics (high-harmonic generation, light-matter interactions in topological materials)
Other: $\LaTeX$
Publications
“Localization of the Higgs mode at the superfluid-Mott glass transition”
J. Crewse, T. Vojta (2021)
Physical Review B 104 (1), 014511
“Tunable non-integer high-harmonic generation in a topological insulator”
C.P. Schmid, L. Weigl, P. Grossing, V. Junk, C. Gorini, S. Schlauderer, S. Ito, M. Meierhofer, N. Mofmann, D. Afanasiec, J. Crewse, K. Koch, O.E. Tereshchenko, J. Gudde, F. Evers, J. Wilhelm, K. Richter, U. Hofer, R. Huber (2021)
Nature 593, 385-390
“Semiconductor Bloch-equations formalism: Derivation and application to high-harmonic generation from Dirac fermions”
J. Wilhelm, P. Grossing, A. Seith, J. Crewse, M. Nitsch, C. Schmid, F. Evers (2021)
Physical Review B 103, 125419
“Collective modes at a disordered quantum phase transition”
M. Puschmann, J. Crewse, J.A. Hoyos, T. Vojta (2020)
Physical Review Letters 125, 127002
“Quantum critical behavior of a three-dimensional superfluid-Mott glass transition”
J. Crewse C. Lerch, T. Vojta (2018)
Physical Review B 98, 054514
“Quantum critical behavior of the superfluid-Mott glass transition”
T. Vojta, J. Crewse, M. Puschmann, D. Arovas, Y. Kiselev
Physical Review B 94, 134501
Conferences
“Quantum Critical Behavior and Collective Modes Near The Superfluid-Mott Glass Transition”
Argonne Postdoc Research and Career Symposium 2022
“Localization of the Higgs mode at the superfluid-Mott glass quantum phase transition”
APS March Meeting 2022
“High-harmonic generation in Dirac metals: Application of the semiconductor-Bloch formalism to topological systems”
APS March Meeting 2021
“Higgs mode locaization at the superfluid-Mott glass quantum phase transition”
Localisation 2020
“Quantum Critical Behavior of the Superfluid-Mott Glass Transition”
Advances in Strongly Correlated Electron Systems (2019)
“Amplitude (Higgs) mode at the superfluid-Mott glass transtion”
APS March Meeting 2019
“Quantum critical behavior of a three-dimensional superfluid-Mott glass transition”
APS March Meeting 2018
“Quantum critical behavior of the superfluid-Mott glass transition”
APS March Meeting 2017
Awards
“Schearer” Prize 2021 (1st Place) - Laird D. Schearer Competition for Graduate Research
“Localization of the Higgs mode near the superfluid-Mott glass quantum phase transiton”“Schearer” Prize 2020 (1st Place) - Laird D. Schearer Competition for Graduate Research
“High-harmonic generation in Dirac metals: Application of the semiconductor-Bloch formalism to topological systems”“Schearer” Prize 2018 (1st Place) - Laird D. Schearer Competition for Graduate Research
“Quantum Critical Behavior of a Three-Dimensional Superfluid-Mott Glass Transition”Fuller Prize 2014 (2nd Place) - Harold Q. Fuller Undergraduate Research Competition
“Magnetization of transition metal-doped topological insulators”Eagle Scout (2005)