3 papers
quant-ph2026
Optimal Strategies for Multi-parameter Quantum Metrology
Linxuan Li, Zihao Hu, Longyun Chen +2
Estimating multiple unknown parameters simultaneously is essential for practical quantum sensing. However, it faces a fundamental challenge: the optimal strategy for estimating one…
quant-ph2025
Tight bounds of quantum speed limit for noisy dynamics via maximum rotation angles
Zihao Hu, Haidong Yuan, Zigui Zhang +2
The laws of quantum physics place a limit on the speed of computation. In particular, the evolution time of a system from an initial state to a final state cannot be arbitrarily sh…
quant-ph2024
Fully-Optimized Quantum Metrology: Framework, Tools, and Applications
Qiushi Liu, Zihao Hu, Haidong Yuan +1
This tutorial introduces a systematic approach for addressing the key question of quantum metrology: For a generic task of sensing an unknown parameter, what is the ultimate precis…