Postdoctoral researcher / University of Amsterdam
I develop tensor-network algorithms and scientific software for strongly correlated quantum matter, with a focus on iPEPS, long-range interactions, and scalable contractions.
Research: tensor networks, iPEPS, CTMRG, long-range systems, and numerical linear algebra.
2026
Preprint
Qi Yang.
Direct evaluation of algebraic interaction tails through connected transfer-matrix functions, Krylov actions, and stable variational gradients.
2026
Physical Review B 113, L201106
Yining Zhang†, Qi Yang†, Philippe Corboz.
QR-based CTMRG replaces expensive decompositions and accelerates two-dimensional tensor-network contractions, especially on GPUs.
2026
Physical Review B 113, 085109
Qi Yang†, Philippe Corboz.
A geometry-native QR-CTMRG framework for efficient and accurate iPEPS contractions on the honeycomb lattice.
† First or co-first author.
Single-file reference implementation for QR-based CTMRG algorithms.
Tools for translating Gaussian fermionic PEPS into generic fPEPS workflows.
Variational benchmarks for quantum many-body problems.
Two-dimensional infinite tensor-network library.
2026-06-30
Julia oracles, native C++ and CUDA kernels, and verification-driven optimization.
2024-11-22
Low-rank approximations for nearby tensors in tensor-network calculations.
2024-11-16
A short note on Markdown, mathematics, and documentation tooling.