4 papers
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…
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…
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…
Strongly tilted field induced fractional quantized-drift in non-interacting system
Bo Zhu, Zhi Tan, Huilin Gong +3
Fractional quantized response appears to be a distinctive characteristic in interacting topological systems. Here, we discover a novel phenomenon of tilt-induced fractional quantiz…