2019/06/01 by Long-Mei Yang, Tao Li, Shao-Ming Fei +2
Computer Science · Physics and Astronomy · #Amplitude damping channel #Channel (broadcasting) #Coherence (philosophical gambling strategy) #Computer science #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum discord #Quantum entanglement #Quantum mechanics #Statistical physics #Superposition principle #Telecommunications #quant-ph
paper · pdf · doi:10.1142/s0219749919500369
published as Int. J. Quant. Inform., 17(4)(2019),1950036 · 6 pages
openalex publication_date 2019/06/01 · arxiv created 2019/09/03 · arxiv updated 2019/09/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Originating from the superposition principle in quantum mechanics, coherence has been extensively studied as a kind of 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 it cannot be enhanced for some other cases. For coherence-breaking channels with different types, the channel distinguishability cannot be enhanced via entanglement.