Regular Article

Tighter monogamy and polygamy relations in multiqubit systems

College of Computer Science, Shaanxi Normal University, Xi’an 710062, P.R. China

^a e-mail: liyongm@snnu.edu.cn

Received: 15 October 2018
Received in final form: 27 November 2018
Published online: 15 January 2019

Abstract

In this paper, we investigate some monogamy and polygamy relations in terms of concurrence, Rényi α-entropy entanglement and Tsallis q-entropy entanglement. Those relations are tighter than the existing monogamy and polygamy relations. As application, we give some examples in detail.