206 citations · 1.3k across the 109 of their papers we have counts for
6 papers · 2 filters
A Note on Normal Forms of Quantum States and Separability
Ming Li, Shao-Ming Fei, Zhi-Xi Wang
We study the normal form of multipartite density matrices. It is shown that the correlation matrix (CM) separability criterion can be improved from the normal form we obtained unde…
Upper bound of the fully entangled fraction
Ming Li, Shao-Ming Fei, Zhi-Xi Wang
We study the fully entangled fraction of quantum states. An upper bound is obtained for arbitrary dimensional bipartite systems. This bound is shown to be exact for the case of two…
Classification of Bipartite and Tripartite Qutrit Entanglement under SLOCC
Xin-Gang Yang, Zhi-Xi Wang, Xiao-Hong Wang +1
We classify biqutrit and triqutrit pure states under stochastic local operations and classical communication. By investigating the right singular vector spaces of the coefficient m…
Separability of Tripartite Quantum Systems
Ming Li, Shao-Ming Fei, Zhi-Xi Wang
We investigate the separability of arbitrary dimensional tripartite sys- tems. By introducing a new operator related to transformations on the subsystems a necessary condition for…
Separability and Entanglement of Quantum States Based on Covariance Matrices
Ming Li, Shao-Ming Fei, Zhi-Xi Wang
We investigate the separability of quantum states based on covariance matrices. Separability criteria are presented for multipartite states. The lower bound of concurrence proposed…
Entanglement of Multipartite Schmidt-correlated States
Ming-Jing Zhao, Shao-Ming Fei, Zhi-Xi Wang
We generalize the Schmidt-correlated states to multipartite systems. The related equivalence under SLOCC, the separability, entanglement witness, entanglement measures of negativit…