Coherence of assistance and regularized coherence of assistance
Quantum Physics
2017-12-29 v1
Abstract
We study the relation between the coherence of assistance and the regularized coherence of assistance introduced by Chitambar et al. [E. Chitambar et al., Phys. Rev. Lett. 116, 070402 (2016)]. The necessary and sufficient conditions that these two quantities coincide are provided. Detailed examples are analyzed and the optimal pure state decompositions such that the coherence of assistance equals the regularized coherence of assistance are derived. Moreover, we present the protocol for obtaining the maximal relative entropy coherence, assisted by another party under local measurement and one-way communication in one copy setting.
Keywords
Cite
@article{arxiv.1712.09768,
title = {Coherence of assistance and regularized coherence of assistance},
author = {Ming-Jing Zhao and Teng Ma and Shao-Ming Fei},
journal= {arXiv preprint arXiv:1712.09768},
year = {2017}
}