Personal Biography

Dr. Junkai Zeng is a researcher specializing in quantum control, quantum dynamics, noise processes, error mitigation, and quantum circuit optimization. Research contributions include the development of geometric frameworks for driven quantum systems and analytically solvable methods for constructing noise-resilient quantum gates. Prior to joining the research community in Shenzhen, Junkai’s work in California’s quantum-technology startup sector focused on quantum optimal-control algorithms and software supporting superconducting qubit platforms.

Education Background

2014-2019, Ph.D. in Physics, Virginia Tech

2010-2014, B.S. in Physics, University of Science and Technology of China

Working Experience

2025-Now, Associate Researcher, International Quantum Academy, Shenzhen, China

2021-2025, Research Assistant Professor, Southern University of Science and Technology (SUSTech), Shenzhen, China

2019-2021, Senior Quantum Control Engineer, QCTRL, Los Angeles, USA

Papers and Patents

1. J Zeng, XH Deng, “Fundamental Costs of Noise-Robust Quantum Control: Speed Limits and Complexity”, arXiv:2510.07183 (2025)

2. J Zeng, L Chen, XH Deng, “Analytically Solvable Robust Single-Qubit Gates for Multi-Qubit Systems with Unwanted Couplings” arXiv:2503.12424 (2025)

3. YJ Hai, Y Song, J Li, J Zeng, D Yu, XH Deng, “Geometric correspondence of noisy quantum dynamics and universal robust quantum gates”, Physical Review Applied (2025)

4. J. Zeng, E. Barnes, “Generating error-resistant quantum control pulses from geometrical curves”, US Patent 11966816 (2024)

5. J Zeng, YJ Hai, H Liang, XH Deng, “Enhancing Quantum Circuit Noise Robustness from a Geometric Perspective”, arXiv:2305.06795 (2023)

6. B Cheng, XH Deng, et al, “Noisy intermediate-scale quantum computers”, Frontiers of Physics 18, 21308 (2023)

7. E Barnes, FA Calderon-Vargas, W Dong, B Li, J Zeng, F Zhuang, “Dynamically corrected gates from geometric space curves”, Quantum Science and Technology 7 (2), 023001 (2022)

8. F Zhuang, J Zeng, SE Economou, E Barnes, “Noise-resistant Landau-Zener sweeps from geometrical curves”, Quantum 6, 639 (2022)

9. B Li, FA Calderon-Vargas, J Zeng, E Barnes, “Designing arbitrary single-axis rotations robust against perpendicular time-dependent noise”, New Journal of Physics 23 (9), 093032 (2021)

10. J Zeng, CH Yang, AS Dzurak, E Barnes, “Geometric formalism for constructing arbitrary single-qubit dynamically corrected gates”, Physical Review A 99 (5), 052321 (2019)

11. J Zeng, E Barnes, “Fastest pulses that implement dynamically corrected single-qubit phase gates”, Physical Review A 98 (1), 012301 (2018)

12. J Zeng, XH Deng, A Russo, E Barnes, “General solution to inhomogeneous dephasing and smooth pulse dynamical decoupling”, New Journal of Physics 20 (3), 033011 (2018)