Pronouns: he/him (né Karsch)
Jonathan is an assistant staff scientist at Argonne National Laboratory studying spin qubits in semiconductors. He works with silicon quantum dot spin qubits as well as nitrogen defect spins in diamond.
Nuclear Spin Engineering for Quantum Information Science
J. C. Marcks, B. Pingault, J. Zhang, C. Zeledon, F. J. Heremans, D. D. Awschalom. Nuclear Spin Engineering for Quantum Information Science. 2025. J. Mater. Res. 10.1557/s43578-025-01602-x
Minute-long quantum coherence enabled by electrical depletion of magnetic noise
C. Zeledon, B. Pingault, J. C. Marcks, M. Onizhuk, Y. Tsaturyan, Y.-X. Wang, B. S. Soloway, H. Abe, M. Ghezellou, J. Ul-Hassan, T. Ohshima, N. T. Son, F. J. Heremans, G. Galli, C. P. Anderson, D. D. Awschalom. Minute-long quantum coherence enabled by electrical depletion of magnetic noise. 2025. arXiv:2504.13164
Valley Splitting Correlations Across a Silicon Quantum Well
J. C. Marcks, E. Eagen, E. C. Brann, M. P. Losert, T. Oh, J. Reily, C. S. Wang, D. Keith, F. A. Mohiyaddin, F. Luthi, M. J. Curry, J. Zhang, F. J. Heremans, M. Friesen, M. A. Eriksson. Valley Splitting Correlations Across a Silicon Quantum Well. 2025. arXiv:2504.12455
Quantum spin probe of single charge dynamics (PRL Editors' Suggestion)
J. C. Marcks, M. Onizhuk, Y.-X. Wang, Y. Zhu, Y. Jin, B. S. Soloway, M. Fukami, N. Delegan, F. J. Heremans, A. A. Clerk, G. Galli, D. D. Awschalom. Quantum spin probe of single charge dynamics. 2024. Phys. Rev. Let. 10.1103/PhysRevLett.133.130802
Guiding Diamond Spin Qubit Growth with Computational Methods
J. C. Marcks, M. Onizhuk, N. Delegan, Y.-X. Wang, M. Fukami, M. Watts, A. A. Clerk, F. J. Heremans, G. Galli, D. D. Awschalom. Guiding Diamond Spin Qubit Growth with Computational Methods. 2023. Phys. Rev. Mat. 8, 026204. 10.1103/PhysRevMaterials.8.026204
Magnon-mediated qubit coupling determined via dissipation measurements
M. Fukami, J. C. Marcks, D. R. Candido, L. R. Weiss, B. Soloway, S. E. Sullivan, N. Delegan, F. J. Heremans, M. E. Flatté, D. D. Awschalom. Magnon-mediated qubit coupling determined via dissipation measurements. 2023. PNAS 121 (2), e2313754120. 10.1073/pnas.2313754120
Quantifying the limits of controllability for the nitrogen-vacancy electron spin defect
P. Kairys, J. C. Marcks, N. Delegan, J. Zhang, D. D. Awschalom, F. J. Heremans. Quantifying the limits of controllability for the nitrogen-vacancy electron spin defect. 2023. arXiv:2309.03120.
A Roadmap for Quantum Interconnects
D. D. Awschalom, H. Bernien, R. Brown, A. Clerk, E. Chitambar, A. Dibos, J. Dionne, M. Eriksson, B. Fefferman, G. Fuchs, et al. A Roadmap for Quantum Interconnects. United States. 2022. https://doi.org/10.2172/1900586. https://www.osti.gov/servlets/purl/1900586.
Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies
X. Guo, N. Delegan, J. C. Karsch, Z. Li, T. Liu, R. Shreiner, A. Butcher, D. D. Awschalom, F. J. Heremans, A. A. High. Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies. 2021. Nano. Lett. 10.1021/acs.nanolett.1c03703.