Curriculum Vitae

Education

Northwestern University

Ph.D. in Physics, School of Physics and Astronomy — Advised by Jens Koch
Sep. 2021 – Present

Shanghai Jiao Tong University

B.S. Major in Physics, School of Physics and Astronomy — Co-advised by Carlos Navarrete-Benlloch and Xian-Min Jin
Thesis: Non-equilibrium quantum phenomena through the Van Der Pol model
Sep. 2017 – June 2021

B.S. Minor in Computer Science, School of Electronic Information and Electrical Engineering
Sep. 2019 – June 2021

Publications

All of my publications can be found on my Google Scholar page.

1. Shashwat Kumar, Xinyuan You, Xanthe Croot, Tianpu Zhao, Danyang Chen, Sara Sussman, Anjali Premkumar, Jacob Bryon, Jens Koch, Andrew A Houck — Protomon: A Multimode Qubit in the Fluxonium Molecule — arXiv:2411.16648
2. Helin Zhang, Chunyang Ding, D. K. Weiss, Ziwen Huang, Yuwei Ma, Charles Guinn, Sara Sussman, Sai Pavan Chitta, Danyang Chen, Andrew A. Houck, Jens Koch, David I. Schuster — Tunable Inductive Coupler for High-Fidelity Gates Between Fluxonium Qubits — PRX Quantum 5, 020326
3. Xu, Xiao-Yun; Wang, Xiao-Wei; Chen, Dan-Yang; Smith, C Morais; Jin, Xian-Min — Quantum transport in fractal networks — Nature Photonics 15, 703–710 (2021)
4. Huang, Xuan-Lun, Jun Gao, Zhi-Qiang Jiao, Zeng-Quan Yan, Zhe-Yong Zhang, Dan-Yang Chen, Xi Zhang, Ling Ji, and Xian-Min Jin — Reconstruction of quantum channel via convex optimization — Science Bulletin 65, 286–292 (2020)

Current Research Projects

• Scaling Up Fluxonium-Based Quantum Processors: Challenges and Potential Solutions — Design, simulate, and optimize multi-fluxonium quantum systems using two distinct coupling schemes: indirect capacitive coupling through a transmon coupler, and inductive coupling through shared inductances.
  • Talk: Flux jumps depend on global magnetic field in gradiometric fluxonium, APS Global Summit 2026. (Original title: Understanding drive-induced state transitions in fluxonium)
• Open System Dynamics during Fluxonium Measurement — Identify the new factors governing measurement-induced state transitions in fluxonium qubits, including measurement duration, qubit decoherence, and weak state hybridization.
  • Talk: An open quantum systems picture of measurement-induced state transitions in fluxonium qubits, APS Global Summit 2026.
• Error Budgeting for Quantum Error Correction Protocols — Perform device-level error-budget analysis for quantum error correction (QEC) protocols. Optimize device parameters using a rapidly computable figure of merit derived from this error budget to improve QEC performance.
  • Talk: Quantum error correction in cat-code qubits: analysis and minimization of failure rates, APS March Meeting 2023.
  • Talk: Accurate Error Budgeting for Quantum Error Correction Protocols in Superconducting Qubits, APS Global Summit 2026.

Software

• QFit: Interactive Parameter Fitting for Superconducting Circuits — A GUI based on scqubits, featuring visualized calibration, resonance peak extraction, manual pre-fit and numerical fitting. Available on GitHub and conda-forge.
  • Talk: QFit: simplifying calibration and parameter fitting for superconducting circuits, APS March Meeting 2024.

Selected Honors

• Outstanding graduate in Shanghai, 2021 (4%)
• Meritorious Winner of the Mathematical Contest In Modeling (MCM), 2020 (7%)

Professional Activities and Services

Chair of the Seminar Committee in Physics and Astronomy Graduate Student Council (PAGSC), hosting:

• Physics and Astronomy Early Career Research Seminar (PAECRS), 2022–2025
• Rapid Fire Research, 2022–2025
• Presentation & Poster Workshop, 2022–2025
• Community Outreach, 2024–2025

Peer reviewer of journals including Physical Review Letters, Physical Review Applied, and Physical Review Research.

Non-academic Activities

• Leader of Crafters’ (Students’ association) in 2021
• President of Astronomer’s Home (Students’ Association) in term 2018–2019
• Captain of school’s soccer team in season 2019–2020

Last update: July 2026