Abstract
We investigate the monogamy relations of multipartite entanglement in terms of the α th power of concurrence, entanglement of formation, negativity and Tsallis-q entanglement. Enhanced new monogamy relations of multipartite entanglement with tighter lower bounds than the existing monogamy relations are presented, together with detailed examples showing the tightness. These monogamy relations give rise to finer characterization of the entanglement distributions among the subsystems of a multipartite system.
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Acknowledgments
This work is supported by the Natural Science Foundation of China (NSFC) under Grants No. 11847209 and No. 11675113, Key Project of Beijing Municipal Commission of Education under Grant No. KZ201810028042, Beijing Natural Science Foundation under Grant No. Z190005, China Postdoctoral Science Foundation funded project No. 2019M650811, the China Scholarship Council No. 201904910005, Academy for Multidisciplinary Studies, Capital Normal University, and Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China (No. SIQSE202001).
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Zhang, J., Jin, Z., Fei, SM. et al. Enhanced Monogamy Relations in Multiqubit Systems. Int J Theor Phys 59, 3449–3463 (2020). https://doi.org/10.1007/s10773-020-04603-0
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DOI: https://doi.org/10.1007/s10773-020-04603-0