36 citations · 87 across the 8 of their papers we have counts for
9 papers
Unconditional robustness of multipartite entanglement of superposition
Hui-Hui Qin, Shao-Shuai Zhao, Shao-Ming Fei
We study the robustness of genuine multipartite entanglement and inseparability of multipartite pure states under superposition with product pure states. We introduce the concept o…
Optimizing incompatible triple quantum measurements
Hui-Hui Qin, Shao-Ming Fei
We investigate the optimal approximation to triple incompatible quantum measurements within the framework of statistical distance and joint measurability. According to the lower bo…
Characterizing multipartite entanglement by violation of CHSH inequalities
Ming Li, Huihui Qin, Chengjie Zhang +3
Entanglement of high-dimensional and multipartite quantum systems offer promising perspectives in quantum information processing. However, the characterization and measure of such…
Quantifying Algebraic Asymmetry of Hamiltonian Systems
Hui-Hui Qin, Shao-Ming Fei, Chang-Pu Sun
The symmetries play important roles in physical systems. We study the symmetries of a Hamiltonian system by investigating the asymmetry of the Hamiltonian with respect to certain a…
Uncertainties of genuinely incompatible triple measurements based on statistical distance
Hui-Hui Qin, Ting-Gui Zhang, Leonardo Jost +3
We investigate the measurement uncertainties of a triple of positive operator-valued measures (POVMs) based on statistical distance, and formulate state-independent tight uncertain…
Maximal violation of Bell inequalities under local filtering
Ming Li, Huihui Qin, Jing Wang +2
We investigate the behavior of the maximal violations of the CHSH inequality and Vrtesi's inequality under the local filtering operations. An analytical method has been…
Multi-observable Uncertainty Relations in Product Form of Variances
Hui-Hui Qin, Shao-Ming Fei, Xianqing Li-Jost
We investigate the product form uncertainty relations of variances for quantum observables. In particular, tight uncertainty relations satisfied by three observables…
Trade-off Relations of Bell Violations among Pairwise Qubit Systems
Hui-Hui Qin, Shao-Ming Fei, Xianqing Li-Jost
We investigate the nonlocality distributions among multiqubit systems based on the maximal violations of the Clauser-Horne-Shimony-Holt (CHSH) inequality of reduced pairwise qubit…
Lower Bound of Concurrence Based on Generalized Positive Maps
Hui-hui Qin, Shao-Ming Fei
We study the concurrence of arbitrary dimensional bipartite quantum systems. By using a positive but not completely positive map, we present an analytical lower bound of concurrenc…