Tighter constraints of multiqubit entanglement in terms of Rényi-α entropy*
Meng-Li Guo, Bo Li, Zhi-Xi Wang, Shao-Ming Fei · Chinese Physics B · 2020
Quantum entanglement plays essential roles in quantum information processing. The monogamy and polygamy relations characterize the entanglement distributions in the multipartite systems. We present a class of monogamy inequalities related to the μ-th power of the entanglement measure based on Rényi-α entropy, as well as polygamy relations in terms of the μ-th power of Rényi-α entanglement of assistance. These monogamy and polygamy relations are shown to be tighter than the existing ones.