Physics – Quantum Physics
Scientific paper
2010-06-23
Eur. Phys. J. D 61, 765-771 (2011)
Physics
Quantum Physics
8 pages, no figures
Scientific paper
10.1140/epjd/e2010-10432-4
In this paper, we mainly discuss the separability of $n$-partite quantum states from elements of density matrices. Practical separability criteria for different classes of $n$-qubit and $n$-qudit quantum states are obtained. Some of them are also sufficient conditions for genuine entanglement of $n$-partite quantum states. Moreover, one of the resulting criteria is also necessary and sufficient for a class of $n$-partite states.
Gao Ting-Ting
Hong Yan
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