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Entanglement in a Class of Multiqubit Mixed States Without Multipartite Tangles by Bai, Yan-Kui; Ye, Ming-Yong; Wang, Z. D. is a scholarly article available to read on EtoBox.

What is Entanglement in a Class of Multiqubit Mixed States Without Multipartite Tangles about?

Based on quantum complementary relations (QCRs) and a purification scenario, we analyze a class of N-qubit mixed states that are entangled but do not have two-, and genuine three-, four-, ..., N-qubit entanglements. It is shown that entanglement (one-tangle or negativity) in these mixed states is closely related to the QCR entanglement of their purified states. In particular, it is elaborated that when the mixed state does not have multipartite tangles (two- and higher tangles), its entanglement is actually a kind of genuine multipartite QCR entanglement between the system and its environment.

Author

Bai, Yan-Kui; Ye, Ming-Yong; Wang, Z. D.

Published

2008

Language

EN