Physical interpretation of nonlocal quantum correlation through local description of subsystems

• URL: http://arxiv.org/abs/2210.00237v1
• Date: Sat, 1 Oct 2022 10:13:40 GMT
• Title: Physical interpretation of nonlocal quantum correlation through local description of subsystems
• Authors: Tanumoy Pramanik, Xiaojiong Chen, Yu Xiang, Xudong Li, Jun Mao, Jueming Bao, Yaohao Deng, Tianxiang Dai, Bo Tang, Yan Yang, Zhihua Li, Qihuang Gong, Qiongyi He and Jianwei Wang
• Abstract summary: We propose the physical interpretation of nonlocal quantum correlation between two systems. Different nonlocal quantum correlations can be discriminated from a single uncertainty relation derived under local hidden state (LHS)-LHS model only.
• Score: 19.542805787744133
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Characterization and categorization of quantum correlations are both fundamentally and practically important in quantum information science. Although quantum correlations such as non-separability, steerability, and non-locality can be characterized by different theoretical models in different scenarios with either known (trusted) or unknown (untrusted) knowledge of the associated systems, such characterization sometimes lacks unambiguous to experimentalist. In this work, we propose the physical interpretation of nonlocal quantum correlation between two systems. In the absence of {\it complete local description} of one of the subsystems quantified by the {\it local uncertainty relation}, the correlation between subsystems becomes nonlocal. Remarkably, different nonlocal quantum correlations can be discriminated from a single uncertainty relation derived under local hidden state (LHS)-LHS model only. We experimentally characterize the two-qubit Werner state in different scenarios.

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