English

Unified monogamy relations for the generalized $W$-class states beyond qubits

Quantum Physics 2024-11-19 v1

Abstract

The monogamy of entanglement stands as an indispensable feature within multipartite quantum systems. We study monogamy relations with respect to any partitions for the generalized WW-class (GW) states based on the unified-(q,sq,s) entanglement (UE). We provide the monogamy relation based on the squared UE for a reduced density matrix of a qudit GW state, as well as tighter monogamy relations based on the α\alphath (α2\alpha\geq2) power of UE. Furthermore, for an nn-qudit system ABC1...Cn2ABC_1...C_{n-2}, generalized monogamy relation and upper bound satisfied by the β\betath (0β10\leq\beta\leq1) power of UE for the GW states under the partition ABAB and C1...Cn2C_1...C_{n-2} are established. In particular, two partition-dependent residual entanglements for the GW states are analyzed in detail.

Keywords

Cite

@article{arxiv.2411.10740,
  title  = {Unified monogamy relations for the generalized $W$-class states beyond qubits},
  author = {Zhong-Xi Shen and Wen Zhou and Dong-Ping Xuan and Zhi-Xi Wang and Shao-Ming Fei},
  journal= {arXiv preprint arXiv:2411.10740},
  year   = {2024}
}

Comments

12 pages, 4 figures