3 papers
quant-ph2026
Universal Scaling of the Minimum Error Probability in Qualification of Quantum States
Zhaoyu Fei, Yaotian Li, Weicheng Huang +2
Qualification of quantum states judges which of two sets of quantum states an unknown state lies in, where the two sets are labeled by two distinct parameter regions. We formulate…
cond-mat.stat-mech2026
Optimal Estimation of Temperature in Finite-sized System
Shaoyong Zhang, Zhaoyu Fei, Xiaoguang Wang
Temperature of a finite-sized system fluctuates due to the thermal fluctuations. However, a systematic mathematical framework for measuring or estimating the temperature is still u…
quant-ph2025
Boundary Time Crystals: Beyond Mean-Field Theory
Zeping Liu, Yaotian Li, Zhaoyu Fei +1
Boundary time crystals are a class of exotic dissipative quantum phases that spontaneously break continuous time-translation symmetry in the thermodynamic limit of open quantum sys…