Lower Bounds of Concurrence for Multipartite States
Xue-Na Zhu, Ming Li, Shao-Ming Fei
TL;DR
This paper investigates lower bounds of multipartite quantum state entanglement, proposing improved methods to detect and quantify entanglement through functional relations involving concurrence and partial transpositions.
Contribution
It introduces more effective lower bounds for multipartite concurrence by establishing new functional relations with generalized partial transpositions.
Findings
New lower bounds improve entanglement detection accuracy
Functional relations enhance quantification of multipartite entanglement
Results applicable to complex quantum systems
Abstract
We study the entanglement of multipartite quantum states. Some lower bounds of the multipartite concurrence are reviewed. We further present more effective lower bounds for detecting and qualifying entanglement, by establishing functional relations between the concurrence and the generalized partial transpositions of the multipartite systems.
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