Network nonlocality sharing via weak measurements in the generalized star network configuration

• URL: http://arxiv.org/abs/2206.03100v2
• Date: Mon, 25 Jul 2022 08:42:00 GMT
• Title: Network nonlocality sharing via weak measurements in the generalized star network configuration
• Authors: Jian-Hui Wang, Ya-Jie Wang, Liu-Jun Wang and Qing Chen
• Abstract summary: Network nonlocality exhibits completely novel quantum correlations compared to standard quantum nonlocality. It can be shared in a generalized bilocal scenario via weak measurements.
• Score: 5.203042650294495
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Network nonlocality exhibits completely novel quantum correlations compared to standard quantum nonlocality. It has been shown that network nonlocality can be shared in a generalized bilocal scenario via weak measurements [Phys. Rev. A. 105, 042436 (2022)]. In this paper, we investigate network nonlocality sharing via weak measurements in a generalized star-shaped network configuration with arbitrary numbers of unbiased dichotomic input $k$, which includes $n$ branches and adds ($m$-1) more parties in each branch to the original star network $(n, m=1, k=2)$ scenario. It is shown that network nonlocality sharing among all observers can be revealed from simultaneous violation of $2^n$ inequalities in the ($n, m=2, k=2$) and ($n, m=2, k=3$) scenarios for any $n$ branches. The noise resistance of network nonlocality sharing with a precise noise model is also analyzed.

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