Experimental Characterization of Quantumness Using the Uncertainty Principle, Coherence, and Nonlocality

• URL: http://arxiv.org/abs/2506.21051v1
• Date: Thu, 26 Jun 2025 06:53:40 GMT
• Title: Experimental Characterization of Quantumness Using the Uncertainty Principle, Coherence, and Nonlocality
• Authors: Yan-Han Yang, Xin-Zhu Liu, Xing-Zhou Zheng, Jun-Li Jiang, Xue Yang, Shao-Ming Fei, Zhihao Ma, Zizhu Wang, Ming-Xing Luo,
• Abstract summary: Heisenberg's uncertainty principle, coherence and Bell nonlocality have been individually examined through many experiments.<n>We systematically characterize all of this quantumness in a unified manner.
• Score: 8.117381648441162
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Heisenberg's uncertainty principle, coherence and Bell nonlocality have been individually examined through many experiments. In this Letter, we systematically characterize all of this quantumness in a unified manner. We first construct universal uncertainty relations to reveal intrinsic features of incompatible measurements, which include all the state-independent uncertainties as special cases. We further extend to witness both quantum coherence and Bell nonlocality. We finally perform experiments with unified two-photon states, and validate the uncertainty principle, coherence and Bell nonlocality within the experimental error. Our methods for witnessing quantumness are valuable in characterizing quantum correlations in quantum information processing.

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