MiS Preprint Repository

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MiS Preprint

Entanglement of Formation of Bipartite Quantum States

Kai Chen, Sergio Albeverio and Shao-Ming Fei


We give an explicit tight lower bound for the entanglement of formation for arbitrary bipartite mixed states by using the convex hull construction of a certain function. This is achieved by revealing a novel connection among the entanglement of formation, the well-known Peres-Horodecki and realignment criteria. The bound gives a quite simple and efficiently computable way to evaluate quantitatively the degree of entanglement for any bipartite quantum state.

Nov 15, 2005
Nov 15, 2005
03.67.Mn, 03.65.Ud, 89.70.+c
entanglement of formation, lower bound

Related publications

2005 Repository Open Access
Kai Chen, Sergio Albeverio and Shao-Ming Fei

Entanglement of formation of bipartite quantum states

In: Physical review letters, 95 (2005) 21, p. 210501