title: Multipartite entanglement indicators based on monogamy relations of n-qubit symmetric states.
abstract: Constructed from Bai-Xu-Wang-class monogamy relations, multipartite entanglement indicators can detect the entanglement not stored in pairs of the focus particle and the other subset of particles. We investigate the k-partite entanglement indicators related to the αth power of entanglement of formation (αEoF) for k ≤ n, αϵ and n-qubit symmetric states. We then show that (1) The indicator based on αEoF is a monotonically increasing function of k. (2) When n is large enough, the indicator based on αEoF is a monotonically decreasing function of α, and then the n-partite indicator based on works best. However, the indicator based on 2 EoF works better when n is small enough.
authors: State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China.|School of Mathematics and Statistics Science, Ludong University, Yantai, 264025, China.
authors: Feng
authors: F
authors: Liu
authors: State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors: Fei
authors: F
authors: Gao
authors: State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors: Su-Juan
authors: SJ
authors: Qin
authors: School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China.
authors: Shu-Cui
authors: SC
authors: Xie
authors: State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors: Qiao-Yan
authors: QY
authors: Wen