MiS Preprint Repository

We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV ( that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.

MiS Preprint

Coherence of Assistance and Regularized Coherence of Assistance

Ming-Jing Zhao, Teng Ma and Shao-Ming Fei


We study the relation between the coherence of assistance and the regularized coherence of assistance introduced in [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 to 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.


Related publications

2017 Repository Open Access
Ming-Jing Zhao, Teng Ma and Shao-Ming Fei

Coherence of assistance and regularized coherence of assistance

In: Physical review / A, 96 (2017) 6, p. 062332