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arXiv · 2007.09544

Strong superadditivity relations for multiqubit systems

Xianfei Qi·Ting Gao·Fengli Yan
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Abstract

We investigate the distributions of quantum coherence characterized by superadditivity relations in multipartite quantum systems. General superadditivity inequalities based on the $\alpha$th ($\alpha\geqslant 1$) power of $l_1$ norm of coherence are presented for multiqubit states, which include the existing ones as special cases. Our result is shown to be tighter than the existing one by a specific example.

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Xianfei Qi, Ting Gao, Fengli Yan. 2020-07-19. Strong superadditivity relations for multiqubit systems. https://doi.org/10.1088/1612-202x%2Fabae02

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