We study the dynamics of two lower bounds of concurrence in bipartite quantum systems when one party

goes through an arbitrary channel. We show that these lower bounds obey the factorization law similar to that of [Konrad et al., Nat. Phys. 4...

We derive measurable lower bounds on concurrence of arbitrary mixed states, for both

bipartite and multipartite cases. First, we construct measurable lower bonds on the

purely algebraic bounds of concurrence [F. Mintert et al. (2004...

In this paper, we use the concurrence vector as a measure of entanglement, and investigate lower and upper bounds on the concurrence of a superposition of bipartite states as a function of the concurrence of the superposed states. We show...

For a given pure state of amultipartite system, the concurrence vector is defined

by employing the defining representation of generators of the corresponding

rotation groups. The norm of a concurrence vector is considered as a measure...