Abstract
We investigate genuine multipartite entanglement (GME) in n-partite systems. The norms of the correlation vectors are used as a powerful tool to dealing with the detection of GME for n-partite quantum systems. A sufficient condition for detecting GME in general multipartite systems is presented. Moreover, an effective lower bound of the GME concurrence is derived, which gives a useful way to measure the GME. Several examples are considered to show the effectiveness of the criterion and the lower bound of GME concurrence.
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Acknowledgements
This work is supported by Key Research and Development Project of Guangdong Province under Grant No.2020B0303300001 and the Guangdong Basic and Applied Basic Research Foundation under Grant No.2020B1515310016 and the NSF of China under Grant Nos.11675113, the Key Project of Bei**g Municipal Commission of Education (Grant No.KZ201810028042), Bei**g Natural Science Foundation (Z190005), and Academy for Multidisciplinary Studies, Capital Normal University.
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Xu, W., Zheng, ZJ., Zhu, CJ. et al. Measure and detection of genuine multipartite entanglement for n-partite systems. Eur. Phys. J. Plus 136, 5 (2021). https://doi.org/10.1140/epjp/s13360-020-01036-w
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DOI: https://doi.org/10.1140/epjp/s13360-020-01036-w