About Me

I am a third year Ph.D student studying Computer Science at University of Texas at Austin, advised by Prof. Dana Moshkovitz. My research is mainly focused on complexity theory, especially in hardness of approximation and circuit lower bounds.

I am also interested in topics such as quantum complexity, coding theory and spectral graph theory.

Publications / Manuscripts

• Quantum Meets Minimum Circuit Size Problem
  • Nai-Hui Chia, Chi-Ning Chou, Jiayu Zhang, Ruizhe Zhang
  • [arxiv] [eccc]

• Hybrid Quantum-Classical Implementation of Training Over-Parameterized Neural Networks
  • Zhao Song, Ruizhe Zhang

• Symmetric Boolean Factor Analysis with Applications to InstaHide
  • Sitan Chen, Zhao Song, Runzhou Tao, Ruizhe Zhang
  • [arxiv]

• InstaHide's Sample Complexity When Mixing Two Private Images
  • Baihe Huang, Zhao Song, Runzhou Tao, Ruizhe Zhang, Danyang Zhuo
  • [arxiv]

• Hyperbolic Concentration, Anti-concentration, and Discrepancy
  • Zhao Song, Ruizhe Zhang
  • [arxiv]

• New Approaches for Quantum Copy-Protection
  • Scott Aaronson, Jiahui Liu, Qipeng Liu, Mark Zhandry, Ruizhe Zhang
  • To appear in the 41st Annual International Cryptology Conference (Crypto'2021)
  • Contributed talk at the 16th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC'2021)
  • [arxiv]

• QED driven QAOA for network-flow optimization
  • Yuxuan Zhang, Ruizhe Zhang, Andrew C. Potter
  • In Quantum, Volume 5, Number 510 (2021)
  • [arxiv] [journal]

• On the Quantum Complexity of Closest Pair and Related Problems
  • Scott Aaronson, Nai-Hui Chia, Han-Hsuan Lin, Chunhao Wang, Ruizhe Zhang
  • In Proceedings of the 35th Computational Complexity Conference (CCC'2020)
  • Contributed talk at the 15th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC'2020)
  • [arxiv] [conference]