I’m a Ph.D. candidate at Academy of Mathematics and Systems Science, Chinese Academy of Sciences (AMSS, CAS). My current research focuses on quantum algorithms and quantum complexity theory, especially query complexity. I am also broadly interested in other topics in quantum information science, particularly those with deep mathematical foundations, with the overarching goal of better understanding the structure of quantum advantage.

I’m currently looking for a postdoc position :)

zhangyuxin at amss.ac.cn
zhangyuxin dot math at gmail.com

Papers

Authors are listed alphabetically unless marked with$^\star$

Elfs, transducers and quantum walks
with Simon Apers, Jérémie Roland

DQC1-completeness of normalized trace estimation for functions of log-local Hamiltonians
with Zhengfeng Ji, Tongyang Li, Changpeng Shao, Xinzhao Wang
arXiv:2604.01519

Randomized quantum singular value transformation$^{\star}$
with Xinzhao Wang, Soumyabrata Hazra, Tongyang Li, Changpeng Shao, Shantanav Chakraborty
arXiv:2510.06851

Quantum singular value transformation without block encodings: Near-optimal complexity with minimal ancilla
with Shantanav Chakraborty, Soumyabrata Hazra, Tongyang Li, Changpeng Shao, Xinzhao Wang
arXiv:2504.02385

Quantum spectral method for gradient and Hessian estimation$^{\star}$
with Changpeng Shao
arXiv:2407.03833