4 papers
Role of long-range interaction in critical quantum metrology
Zhen-Xia Niu, Qian Wang
Long-range interacting quantum systems are useful for improving the performance of various applications of quantum technologies. In this work, we carry out a detailed analysis of h…
Multifractality and excited-state quantum phase transition in ferromagnetic spin- Bose-Einstein condensates
Zhen-Xia Niu, Qian Wang
Multifractality of quantum states plays an important role for understanding numerous complex phenomena observed in different branches of physics. The multifractal properties of the…
Dynamic protected states in the non-Hermitian system
Lei Chen, Zhen-Xia Niu, Xingran Xu
The non-Hermitian skin effect and nonreciprocal behavior are sensitive to the boundary conditions, which are unique features of non-Hermitian systems. The eigenenergies will become…
Universal dynamics of the entropy of work distribution in spinor Bose-Einstein condensates
Zhen-Xia Niu
Driving a quantum many-body system across the quantum phase transition (QPT) in the finite time has been concerned in different branches of physics to explore various fundamental q…