Star network non-n-local correlations can resist consistency noises better

• URL: http://arxiv.org/abs/2307.09293v2
• Date: Wed, 6 Sep 2023 02:19:23 GMT
• Title: Star network non-n-local correlations can resist consistency noises better
• Authors: Kan He and Yueran Han
• Abstract summary: We find that star network quantum non-n-local correlations can resist better consistency noises than these in polygon and linear networks. Polygon and linear network non-n-local correlations can not meet the requirements.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Imperfections from devices can result in the decay or even vanish of non-n-local correlations as the number of parties n increases in the polygon and linear quantum networks ([Phys. Rev. A 106, 042206 (2022)] and [Phys. Rev. A 107, 032404 (2023)]). Even so this phenomenon is also for the special kind of noises, including consistency noises of a sequence of devices, which means the sequence of devices have the same probability fails to detect. However, in the paper, we discover that star network quantum non-n-local correlations can resist better consistency noises than these in polygon and linear networks. We first calculate the noisy expected value o f star network non-n-locality and analyze the persistency conditions theoretically. When assume that congener devices have the consistency noise, the persistency number of sources n has been rid of such noises, and approximates to the infinity. Polygon and linear network non-n-local correlations can not meet the requirements. Furthermore, we explore the change pattern of the maximal number of sources nmax such that non-nmax-local correlation can be demonstrated in the star network under the influence of partially consistent noises, which is more general than consistent ones.

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