Separability criteria for several classes of $n$-partite quantum states

Abstract

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.

8 pages, no figures

References in corpus (3)

• Entanglement detection
• Quantum information with Gaussian states
• Deterministic secure direct communication using GHZ states and swapping quantum entanglement