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MiS Preprint

Finer Distribution of Quantum Correlations among Multiqubit Systems

Zhi-Xiang Jin and Shao-Ming Fei


We study the distribution of quantum correlations characterized by monogamy relations in multipartite systems. By using the Hamming weight of the binary vectors associated with the subsystems, we establish a class of monogamy inequalities for multiqubit entanglement based on the $\alpha$th ($\alpha\geq 2$) power of concurrence, and a class of polygamy inequalities for multiqubit entanglement in terms of the $\beta$th ($0\leq \beta\leq2$) power of concurrence and concurrence of assistance. Moveover, we give the monogamy and polygamy inequalities for general quantum correlations.

Application of these results to quantum correlations like squared convex-roof extended negativity (SCREN), entanglement of formation and Tsallis-$q$ entanglement gives rise to either tighter inequalities than the existing ones for some classes of quantum states or less restrictions on the quantum states. Detailed examples are presented.

Feb 11, 2019
Feb 14, 2019

Related publications

2019 Repository Open Access
Zhi-Xiang Jin and Shao-Ming Fei

Finer distribution of quantum correlations among multiqubit systems

In: Quantum information processing, 18 (2019) 1, p. 21