217 citations · 1.3k across the 53 of their papers we have counts for
5 papers · 1 filter
Quantum Higher Order Fourier Analysis and the Clifford Hierarchy
Kaifeng Bu, Weichen Gu, Arthur Jaffe
We propose a mathematical framework that we call quantum, higher-order Fourier analysis. This generalizes the classical theory of higher-order Fourier analysis, which led to many a…
Decoded Quantum Interferometry Under Noise
Kaifeng Bu, Weichen Gu, Dax Enshan Koh +1
Decoded Quantum Interferometry (DQI) is a recently proposed quantum optimization algorithm that exploits sparsity in the Fourier spectrum of objective functions, with the potential…
Graphical Calculus for Fermionic Tensors
Yuanjie Ren, Kaifeng Bu, Andreas Bauer
We introduce a graphical calculus, consisting of a set of fermionic tensors with tensor-network equations, which can be used to perform various computations in fermionic many-body…
Efficient Measurement of Bosonic Non-Gaussianity
Kaifeng Bu, Bikun Li
Non-Gaussian states are essential resources in quantum information processing. In this work, we investigate methods for quantifying bosonic non-Gaussianity in many-body systems. Bu…
Quantum locally recoverable code with intersecting recovery sets
Kaifeng Bu, Weichen Gu, Xiang Li
We introduce the concept of quantum locally recoverable codes (qLRCs) with intersecting recovery sets. We derive a singleton-like bound for these codes by leveraging the additional…