Preprint 72/2019

Entanglement enhanced distinguishability of coherence-breaking channels

Long-Mei Yang, Tao Li, Shao-Ming Fei, and Zhi-Xi Wang

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Submission date: 21. Aug. 2019
Pages: 7
published in: International journal of quantum information, 17 (2019) 4, art-no. 1950036 
DOI number (of the published article): 10.1142/S0219749919500369
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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.

02.11.2019, 02:18