3 papers
quant-ph2026
Non-commutativity as a Universal Characterization for Enhanced Quantum Metrology
Ningxin Kong, Haojie Wang, Mingsheng Tian +4
A central challenge in quantum metrology is to effectively harness quantum resources to surpass classical precision bounds. Although recent studies suggest that the indefinite caus…
quant-ph2025
Graphical Framework for Non-Gaussian Quantum States
Lina Vandré, Boxuan Jing, Yu Xiang +2
We provide a graphical method to describe and analyze non-Gaussian quantum states using a hypergraph framework. These states are pivotal resources for quantum computing, communicat…
quant-ph2025
Measurement-Incompatibility Constraints for Maximal Randomness
Tianqi Zheng, Yi Li, Yu Xiang +1
Certifying maximal quantum randomness without assumptions about system dimension remains a pivotal challenge for secure communication and foundational studies. Here, we introduce a…