English

Monogamy and polygamy relations of quantum correlations for multipartite systems

Quantum Physics 2022-02-08 v1

Abstract

We study the monogamy and polygamy inequalities of quantum correlations in arbitrary dimensional multipartite quantum systems. We first derive the monogamy inequality of the α\alphath (0αr2,r20\leq\alpha\leq\frac{r}{2}, r\geq2) power of concurrence for any 222n22\otimes2\otimes2^{n-2} tripartite states and generalize it to the nn-qubit quantum states. In addition to concurrence, we show that the monogamy relations are satisfied by other quantum correlation measures such as entanglement of formation. Moreover, the polygamy inequality of the β\betath (β0\beta\leq0) power of concurrence and the β\betath (βs,0s1\beta\geq s, 0\leq s\leq1) power of the negativity are presented for 222n22\otimes2\otimes2^{n-2}. We then obtain the polygamy inequalities of quantum correlations for multipartite states. Finally, our results are shown to be tighter than previous studies using detailed examples.

Keywords

Cite

@article{arxiv.2202.03345,
  title  = {Monogamy and polygamy relations of quantum correlations for multipartite systems},
  author = {Mei-Ming Zhang and Naihuan Jing and Hui Zhao},
  journal= {arXiv preprint arXiv:2202.03345},
  year   = {2022}
}