About
Publications
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Xi Lu received his B.S. in Mathematics with a minor in Physics from Zhejiang University in 2021. He is currently pursuing a Ph.D. in Applied Mathematics at the same institution. In Oct 2023 - Dec 2023, he visited the University of Pavia and worked with Prof. Lorenzo Maccone about quantum metrology. In Aug 2024 - Aug 2025, he visited the North Carolina State University and worked with Prof. Yuan Liu about signal Processing and simulation on hybrid continuous-discrete variable (hybrid CV-DV) quantum systems. He is currently crying for a postdoc position.

Timeline

Selected Preprints

Quantum Signal Processing and Quantum Singular Value Transformation on $U(N)$

Xi Lu, Yuan Liu, Hongwei Lin Quantum Signal Processing
Generalizing Quantum Signal Processing (QSP) and Quantum Singular Value Transformation (QSVT) from $U(2)$ to $U(N)$, which enables us to encode multiple polynomials at a time and has application in parameter estimation and mutli-variate QSP
arXiv Poster Demo: QSVT 101
arXiv:2408.01439.(2024)

Selected Journal Articles

Mutual information bounded by fisher information

Wojciech Górecki, Xi Lu (co-first), Chiara Macchiavello, Lorenzo Maccone Quantum Metrology
A connection between local estimation (Fisher information) and global estimation (mutual information), and a global mutual information bound for quantum phase estimation in the presence of different noise sources
arXiv Journal
Physical Review Research, 7(2), L022013.(2025)

Number of bits returned by a quantum estimation

Xi Lu, Wojciech Górecki, Chiara Macchiavello, Lorenzo Maccone Quantum Metrology
Mutual information bound and optimal strategies for noisy quantum phase estimation, and some discussions on optimal entangled and adaptive strategies beyond the bound in noiseless case
arXiv Journal
Physical Review A, 110(3), 032405.(2024)

Research

HTML Slides
Template for making HTML slides from Markdown
LuTeX
Lu's Real-time LaTeX HTML Renderer
Notes
Public Markdown notes
Refs
Personal Reference Manager

Gamedev

[Placeholder! Keep fingers crossed!]

Lulo
An abandoned puzzle game idea, don't expect too much, play gentoo rescue instead

Cubing

LuTimer 2D Rubik's Cube BLD Stat BLD Scrambler

Miscellaneous

Violin Tuner Audio Spectrum Meditation QR Code

Random Nice Stuffs

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