Kaifeng Bu

About me

Hi, I am Kaifeng Bu, a tenure-track assistant professor in the Department of Mathematics at Ohio State University. Before that, I was a postdoc at Harvard University working together with Arthur Jaffe. My research interests include quantum information and computation, mathematical physics, quantum Fourier analysis, quantum machine learning, and quantum resource theory.

If you are interested in joining my group (as graduate students or postdocs), please send an email (including your CV) to bu.115@osu.edu

New work in 2025

Quantum Higher Order Fourier Analysis and the Clifford Hierarchy, with Weichen Gu, and Arthur Jaffe, arXiv:2508.15908
Graphical Calculus for Fermionic Tensors, with Yuanjie Ren, and Andreas Bauer, arXiv:2508.03976
Decoded Quantum Interferometry Under Noise, with Weichen Gu, Dax Koh, and Xiang Li, arXiv:2508.10725
Efficient Measurement of Bosonic Non-Gaussianity, with Bikun Li, arXiv:2507.10272
Quantum locally recoverable code with intersecting recovery sets, with Weichen Gu, and Xiang Li, http://arxiv.org/abs/2501.10354

New publication in 2025

Quantum Higher Order Fourier Analysis and the Clifford Hierarchy, with Weichen Gu, Arthur Jaffe, accepted by PNAS
Stabilizer Testing and Magic Entropy via Quantum Fourier Analysis, with Weichen Gu, Arthur Jaffe, Commun. Math. Phys. 406, 236 (2025).
Wasserstein Complexity of Quantum Circuits, with Lu Li, Dax Koh, Arthur Jaffe, Seth Lloyd ,J. Phys. A: Math. Theor. 58, 265302 (2025)
Extremality of stabilizer states, Physical Review A,112,032420 (2025)
Displaced Fermionic Gaussian States and their Classical Simulation, with Xingjian Lyu, J. Phys. A: Math. Theor. 58,295301 (2025)
Quantum Ruzsa Divergence to Quantify Magic, with Weichen Gu, Arthur Jaffe, IEEE Transactions on Information Theory 71, 2726 (2025)
Magic resource can enhance the quantum capacity of channels, with Arthur Jaffe, Phys. Rev. Lett. 134, 050202 (2025)

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