Generalized GHZ-class and W-class concurrence and entanglement vectors of the multipartite systems consisting of qubits

Details Generalized GHZ-class and W-class concurrence and entanglement vectors of the multipartite systems consisting of qubits Generalized GHZ-class and W-class concurrence and entanglement vectors of the multipartite systems consisting of qubits

2004-06-16

arxiv.org/abs/quant-ph/0406114v3

Physics

Quantum Physics

4 pages, Revtex. Adding: to show how to exactly back to the usual Wootters' concurrence

Scientific paper

We propose two classes of the generalized concurrence vectors of the multipartite systems consisting of qubits. Making use of them, we are able to, respectively, describe and quantify GHZ-class and W-class entanglement both in total and between arbitrary two partite in the multipartite system consisting of qubits. In the case of pure state of three qubits that one partite is separable, it is shown to exactly back to the usual Wootters' concurrence after introduce a whole concurrence vector. In principle, our method is applicable to any $N$-partite systems consisting of $N$ qubits.

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