Modified relative entropy of entanglement for multi-party systems

Details Modified relative entropy of entanglement for multi-party systems Modified relative entropy of entanglement for multi-party systems

2000-12-06

arxiv.org/abs/quant-ph/0012029v3

Physics

Quantum Physics

4 pages, 2 figures, Revtex, Revised version

Scientific paper

We present the modified relative entropy of entanglement for multi-party systems by a given relative density matrix which is spanned by a linear combination of the direct products of so-called basis of relative density matrices and reduced density matrices for every party. For three qubit system in a pure state we derive out the explicit and closed expression of our relative density matrix which is a function of the components of the state vector of three qubits. Through computing the modified relative entropy of entanglement of some important and interesting examples, we display the main behaviors and elementary properties of the modified relative entropy of entanglement and compare it with the generalized entanglement of formation. Moreover, we also propose an assistant, as the upper bound, of the modified relative entropy of entanglement.

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