Bounds for multipartite concurrence
Ming Li, Shao-Ming Fei, Zhi-Xi Wang
TL;DR
This paper derives bounds for multipartite quantum concurrence, providing improved methods to estimate entanglement in complex quantum states and enabling better detection of entanglement in multipartite systems.
Contribution
It introduces new lower and upper bounds for multipartite concurrence, enhancing entanglement detection compared to previous approaches.
Findings
Derived an inequality relating bipartite and multipartite concurrence.
Established more effective bounds for multipartite concurrence.
Enabled detection of entanglement in a broader class of states.
Abstract
We study the entanglement of a multipartite quantum state. An inequality between the bipartite concurrence and the multipartite concurrence is obtained. More effective lower and upper bounds of the multipartite concurrence are obtained. By using the lower bound, the entanglement of more multipartite states are detected.
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