321 citations · 994 across the 33 of their papers we have counts for
5 papers · 1 filter
Lower Bounds of Concurrence for Tripartite Quantum Systems
Xiu-Hong Gao, Shao-Ming Fei, Ke Wu
We derive an analytical lower bound for the concurrence of tripartite quantum mixed states. A functional relation is established relating concurrence and the generalized partial tr…
Two-Setting Bell Inequalities for Many Qubits
Kai Chen, Sergio Albeverio, Shao-Ming Fei
We present a family of Bell inequalities involving only two measurement settings of each party for N>2 qubits. Our inequalities include all the standard ones with fewer than N qubi…
Bell Inequalities Classifying Bi-separable Three-qubit States
Bao-Zhi Sun, Shao-Ming Fei
We present a set of Bell inequalities that gives rise to a finer classification of the entanglement for tripartite systems. These inequalities distinguish three possible bi-separab…
A Note on Equivalence of Bipartite States under Local Unitary Transformations
Bao-Zhi Sun, Shao-Ming Fei, Xianqing Li-Jost +1
The equivalence of arbitrary dimensional bipartite states under local unitary transformations (LUT) is studied. A set of invariants and ancillary invariants under LUT is presented.…
R Function Related to Entanglement of Formation
Shao-Ming Fei, Xianqing Li-Jost
By investigating the convex property of the function R, appeared in computing the entanglement of formation for isotropic states in Phys. Rev. Lett. 85, 2625 (2000), and a tight lo…