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Chinese Journal of Quantum Electronics

Tight monogamy of squared Tsallis-q entropy entanglement

Guang-Ming Yuan, Tiantian Yin, Dong Minghui, Chen Chang-wei, Shunlei Tang, Li Chen

Published Jan 1, 2020• 0 citations
Publisher
DOI
10.3969/j.issn.1007-5461.2020.06.012

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Tsallis-q entanglement is a bipartite entanglement measure which is the generalization of entanglement of formation for q tending to 1. We first expand the range of q for the analytic formula of Tsallis-q entanglement. For , we prove the monogamy relation in terms of the squared Tsallis-q entanglement for an arbitrary multi-qubit systems. It is shown that the multipartite entanglement indicator based on squared Tsallis-q entanglement still works well even when the indicator based on the squared concurrence loses its efficacy. We also show that the μ-th power of Tsallis-q entanglement satisfies the monogamy or polygamy inequalities for any three-qubit state.