Entanglement enhanced distinguishability of coherence-breaking channels
Quantum Physics
2019-09-04 v1
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 coherence-breaking channel distinguishability with same types for some cases while cannot enhanced for some other cases. For coherence-breaking channels with different types, the channel distinguishability cannot be enhanced via entanglement.
Keywords
Cite
@article{arxiv.1909.00926,
title = {Entanglement enhanced distinguishability of coherence-breaking channels},
author = {Long-Mei Yang and Tao Li and Shao-Ming Fei and Zhi-Xi Wang},
journal= {arXiv preprint arXiv:1909.00926},
year = {2019}
}
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6 pages