English

General Monogamy of Tsallis $q$-Entropy Entanglement in Multiqubit Systems

Quantum Physics 2018-08-02 v3

Abstract

In this paper, we study the monogamy inequality of Tsallis-q entropy entanglement. We first provide an analytic formula of Tsallis-q entropy entanglement in two-qubit systems for 5132q5+132.\frac{5-\sqrt{13}}{2}\leq q\leq\frac{5+\sqrt{13}}{2}. The analytic formula of Tsallis-q entropy entanglement in 2d2\otimes d system is also obtained and we show that Tsallis-q entropy entanglement satisfies a set of hierarchical monogamy equalities. Furthermore, we prove the squared Tsallis-q entropy entanglement follows a general inequality in the qubit systems. Based on the monogamy relations, a set of multipartite entanglement indicators is constructed, which can detect all genuine multiqubit entangled states even in the case of NN-tangle vanishes. Moreover, we study some examples in multipartite higher-dimensional system for the monogamy inequalities.

Keywords

Cite

@article{arxiv.1604.07616,
  title  = {General Monogamy of Tsallis $q$-Entropy Entanglement in Multiqubit Systems},
  author = {Yu Luo and Tian Tian and Lian-He Shao and Yongming Li},
  journal= {arXiv preprint arXiv:1604.07616},
  year   = {2018}
}

Comments

9 pages, 12 figures. v3: closed to published version