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 (www.arxiv.org) 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
72/2019
Entanglement enhanced distinguishability of coherence-breaking channels
Long-Mei Yang, Tao Li, Shao-Ming Fei and Zhi-Xi Wang
Abstract
Originated from the superposition principle in quantum mechanics, coherence has been extensively studied as a kind important resource in quantum information processing.
We investigate the distinguishability of coherence-breaking channels with the help of quantum entanglement. By explicitly computing the minimal error probability of channel discrimination, it is shown that entanglement can enhance the capacity of channel distinguishability.
