English

Ordering states of Tsallis relative $\alpha$-entropies of coherence

Quantum Physics 2016-07-07 v1

Abstract

In this paper, we study the ordering states with Tsallis relative α\alpha-entropies of coherence and l1l_{1} norm of coherence for single-qubit states. We show that any Tsallis relative α\alpha-entropies of coherence and l1l_{1} norm of coherence give the same ordering for single-qubit pure states. However, they don't generate the same ordering for some high dimensional pure states, even though these states are pure. We also consider three special Tsallis relative α\alpha-entropies of coherence, such as C1C_{1} ,C2C_{2} and C12C_{\frac{1}{2}}, and show any one of these three measures and Cl1C_{l_{1}} will not generate the same ordering for single-qubit mixed states. Furthermore, we find that any two of these three special measures generate different ordering for single-qubit mixed states.

Keywords

Cite

@article{arxiv.1607.01591,
  title  = {Ordering states of Tsallis relative $\alpha$-entropies of coherence},
  author = {Fu-Gang Zhang and Lian-He Shao and Yu Luo and Yongming Li},
  journal= {arXiv preprint arXiv:1607.01591},
  year   = {2016}
}