Entanglement of formation of bipartite quantum states |
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Authors: | Chen Kai Albeverio Sergio Fei Shao-Ming |
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Affiliation: | Institut für Angewandte Mathematik, Universit?t Bonn, D-53115, Germany. |
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Abstract: | 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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