CV

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Education

National University of Singapore
- Doctor of Philosophy - PhD, Physics and Computer Science, 2023 - present
- Supervisors: Lee Ching Hua and Kenji Kawaguchi
- GPA: 5.00/5.00
Sichuan University
- Bachelor of Science - BS, Physics, 2019 - 2023
- GPA: 3.96/4.00 (Ranking 1/285)
University of California, Berkeley
- Visiting Student (BPIE), Physics, 2022
- GPA: 4.00/4.00
University of Oxford
- Summer Institute, Physics, 2022
- GPA: 90/100

Publications

^* Equal contribution ^† Corresponding author(s)

Preprints3

Topological classification through knotted graphs: Fermi surface dispersions and Lifshitz transitions

Hakan Akgün^*†, Xianquan Yan^*†, Ching Hua Lee^†

[Equal contribution; co-first authors listed alphabetically.]

arXiv preprint arXiv:2609.133902026

Under review at Nature Physics

KnottedGraph: Scalable knotted-graph topology for scientific and mathematical discovery

Hakan Akgün^†, Xianquan Yan, Kehan Liu, Zhaoyun Chen, Ching Hua Lee^†

arXiv preprint arXiv:2609.311522026

Practical Error Suppression and Mitigation for Reliable Quantum Computing

Han-Ze Li, Mengjie Yang, Xianquan Yan, Dax Enshan Koh^†, Ching Hua Lee^†, Ruizhe Shen^†

arXiv preprint arXiv:2608.204532026

Under review at Advanced Quantum Technologies

Manuscripts Under Review1

Non-Hermitian Activation of Quantum Mpemba Effect in Dipole-conserving Systems

Yi Qin^†, Han-Ze Li, Chun-Hui Liu, Xianquan Yan^†, Ching Hua Lee^†

2026

Under review at Nature Communications

Journal Articles1

Deterministic scale-invariant dynamics in a logistic Game-of-Life model

Hakan Akgün, Xianquan Yan, Tamer Taşkıran, Muhamet Ibrahimi, Ching Hua Lee, Seymur Jahangirov

Communications Physics2026

XinRui Tier 1 / Top · 2026 JCR Q1 · 2025 Impact Factor 5.5 · 2025

Conference & Workshop Papers5

HSG-12M: A Large-Scale Benchmark of Spatial Multigraphs from the Energy Spectra of Non-Hermitian Crystals

Xianquan Yan^†, Hakan Akgün, Kenji Kawaguchi, N. Duane Loh^†, Ching Hua Lee^†

ICLR 2026

CCF A · 2026 ICORE A* · 2026 Impact Factor* 56.04 · 2026

Media Coverage:NUS Science Sichuan University Physics

Classifying the Graph Topology of Non-Hermitian Energy Spectra with Graph Transformer.

Xianquan Yan, Hakan Akgün, Kenji Kawaguchi, N. Duane Loh, Ching Hua Lee

AAAI 2026 XAI4Science Workshop

Multi-Modal Classification of Extended 1D Cellular Automata

Zhaoyun Chen^*, Xianquan Yan^*, Hakan Akgün, N. Duane Loh, Ching Hua Lee

AI4X — Accelerate Conference 2026

Automated Metric Discovery: Navigating Quantum Geometry with Symbolic Regression

Xianquan Yan^†

AI4X 2025 International Conference

Precise Identification of Topological Phase Transitions with Eigensystem-Based Clustering

Xianquan Yan, Jian-Song Pan

AI4X 2025 International Conference

^* Estimated conference impact score from CS Conference Impact Factors. Venue metrics are labelled by year. JCR category: Physics, Multidisciplinary; XinRui category: Physics and Astronomy.

Experience

Student Research Assistant
- Lawrence Berkeley National Laboratory, 2022
- Berkeley, California, United States. Hybrid.
- Supervisor: Benjamin Nachman
Teaching Assistant
- National University of Singapore, 2024 - 2026
- Singapore. Onsite.
- Courses: Practical Machine Learning for Scientific Discovery (AIS5102), AI in Condensed Matter Physics (AIS5204), Complex Systems Analysis and Modelling (PC5253)

Academic Service

Reviewer, Communications Physics, 2026
Reviewer, NeurIPS 2026
Reviewer, ICLR 2027

Codebases and Datasets

KnottedGraph: Python framework for constructing, visualizing, and analyzing knotted graphs, including scalable Yamada polynomial evaluation.
poly2graph: Python package for automatic Hamiltonian spectral graph construction from characteristic polynomials and Bloch Hamiltonians.
HSG-12M: Codebase for downloading, processing, subsetting, and benchmarking the HSG-12M spatial multigraph dataset with NetworkX and PyTorch Geometric.
HSG-12M (Data): Harvard Dataverse dataset of spatial multigraphs extracted from the energy spectra of non-Hermitian crystals.
ClusterAnalyzer: Python library for analyzing critical behavior, self-similarity, and fractal dimensions of clusters in 2D cellular automata.

Honors and Awards

China National Scholarship (Top 0.2%), The Ministry of Education of the P.R. China, 2021
China National Scholarship (Top 0.2%), The Ministry of Education of the P.R. China, 2020
1st Prize, Scholarship of Bajian program for fundamental disciplines 2.0, The Ministry of Education of the P.R. China, 2022
1st Prize, CASC Scholarship, China Aerospace Science and Technology Corp, 2022
Gold, Asia International Mathematical Olympiad Open Contest, A.I.M.O. Union, 2012
Provincial Excellent Student Leader, The Education Department of Sichuan Province, 2019
1st Prize and Best Demeanor Award, South-West Undergraduate Physics Tournament, Sichuan Physical Society, 2020
2nd Prize, National English Competition for College Students, Advisory Board for College Foreign Language Teaching and College English Teaching Research Association of China, 2020
Faculty of Science PhD Conference Award (FPCA), Faculty of Science, National University of Singapore, 2026

Extracurricular Activities

Football (Soccer), School Team
- Captain, Left-Winger, 2013 - 2023
English Debate Team of Sichuan University and Debate Team of Department of Physics
- Debater, 2019 - 2021
Sichuan University Mathematica Society
- Director, 2021 - 2023
Sichuan University English Association
- Director, 2019 - 2021
Calligraphy
Marathon Runner