Dr. Yibin Guo

About Me

I am a Postdoctoral Researcher at Saarland University, working at the interface of tensor networks and quantum computing. My research develops and applies tensor-network and quantum algorithms to many-body quantum systems, with a focus on frustrated spin systems and lattice gauge theories. My current work has two connected research lines. One focuses on many-body physics. I use tensor-network methods and quantum simulation to study systems such as lattice gauge theories. Recent topics include quantum magic in lattice gauge theories. The other line is methodological. I use tensor networks to simulate quantum circuits and develop quantum state-preparation methods based on tensor-network-inspired ansätze. I am
also exploring dissipative approaches to state preparation and ways to use quantum devices to accelerate tensor-network algorithms.

During my Ph.D., I worked on tensor-network algorithms for 1+1D and 2+1D systems. Motivated by rapid progress in quantum computing, I later began working on variational quantum algorithms. At DESY, I studied lattice gauge theories using both quantum simulation and tensor-network methods. 
Outside research, I enjoy music, films, and sports.

Google Scholar Profile Link
INSPIRE-HEP Profile Link

Preprints

4. J. Hu, R. Chi, Y. Guo, B. Normand, H.-J. Liao, T. Xiang, "Dynamical spectral function of the kagome quantum spin liquid", arXiv:2512.18831 (2025).
3. Y. Guo, M. Schneider, T. Angelides, K. Jansen, C.-J. D. Lin, Y. T. Su, "Preparation of initial states with open and periodic boundary conditions on quantum devices using matrix product states", arXiv:2510.07125 (2025).
2. Y. Chai, Y. Guo, S. Kühn, "Scalable quantum algorithm for meson scattering in a lattice gauge theory", arXiv:2505.21240 (2025).
1. Y. Guo, T. Angelides, K. Jansen, S. Kühn, "Concurrent VQE for simulating excited states of the Schwinger model", arXiv:2407.15629 (2024).
 

Publications

9. E. M. Brehm, Y. Guo, K. Jansen, E. Rinaldi, "Simulating matrix models with tensor networks", J. High Energy Phys. 09, 116 (2025). [arXiv:2412.04133]
8. T. Angelides, Y. Guo, K. Jansen, S. Kühn, G. Magnifico, "Meson thermalization with a hot medium in the open Schwinger model", J. High Energy Phys. 04, 195 (2025). [arXiv:2501.13675]
7. X. Wang, Y. Chai, X. Feng, Y. Guo, K. Jansen, C. Tüysüz, "Imaginary Hamiltonian variational ansatz for combinatorial optimization problems", Phys. Rev. A 111, 032612 (2025). [arXiv:2408.09083]
6. H.-Y. Lin, R.-Q. He, Y. Guo, Z.-Y. Lu, "A hybrid method integrating Green's function Monte Carlo and projected entangled pair states", Chin. Phys. B 33, 117504 (2024).  [arXiv:2503.08450]
5. H.-Y. Lin, Y. Guo, R.-Q. He, Z.-Y. Xie, Z.-Y. Lu, "Green's function Monte Carlo combined with projected entangled pair state approach to the frustrated J1–J2 Heisenberg model", Phys. Rev. B 109, 235133 (2024). [arXiv:2406.12207]
4. X. Li, Z. Zhou, G. Xu, R. Chi, Y. Guo, T. Liu, H. Liao, T. Xiang, "Accurate determination of low-energy eigenspectra with multitarget matrix product states", Phys. Rev. B 109, 045115 (2024). [arXiv:2305.15868]
3. G. Xu, Y. Guo, X. Li, K. Wang, Z. Fan, Z.-S. Zhou, H.-J. Liao, T. Xiang, "Concurrent quantum eigensolver for multiple low-energy eigenstates", Phys. Rev. A 107, 052423 (2023).
2. Y. Guo, Y.-C. Yu, R.-Z. Huang, L.-P. Yang, R.-Z. Chi, H.-J. Liao, T. Xiang, "Entanglement entropy of non-Hermitian free fermions", J. Phys.: Condens. Matter 33, 475502 (2021). [arXiv:2105.09793]
1. B.-B. Chen, Y. Gao, Y. Guo, Y.-Z. Liu, H.-H. Zhao, H.-J. Liao, L. Wang, T. Xiang, W. Li, Z.-Y. Xie, "Automatic differentiation for second renormalization of tensor networks", Phys. Rev. B 101, 220409(R) (2020).