Entanglement of Formation of Bipartite Quantum States

Details Entanglement of Formation of Bipartite Quantum States Entanglement of Formation of Bipartite Quantum States

2005-11-16

arxiv.org/abs/quant-ph/0511155v1

Phys. Rev. Lett. 95, 210501 (2005)

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevLett.95.210501

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.

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