Testing spooky action between free-traveling electron-positron pairs

• URL: http://arxiv.org/abs/2502.07597v1
• Date: Tue, 11 Feb 2025 14:46:49 GMT
• Title: Testing spooky action between free-traveling electron-positron pairs
• Authors: Leyun Gao, Alim Ruzi, Qite Li, Chen Zhou, Qiang Li,
• Abstract summary: We investigate the entanglement and the Bell inequality violation of free-traveling electron-positron pairs generated in a fixed-target experiment. Based on this source and the prior knowledge of the entangled state, we demonstrate the feasibility of measuring the polarization correlations of the entangled $e+e-$ pairs.
• Score: 4.004507057677153
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• Abstract: Quantum entanglement is a cornerstone of quantum mechanics. While the entanglement of confined electron pairs has been established early on, the entanglement of free-traveling electron pairs, particularly at high energies, remains largely unexplored due to the substantial challenges involved in measuring the spins of free-traveling electrons. In this study, we investigate the entanglement and the Bell inequality violation of free-traveling electron-positron pairs generated in a fixed-target experiment. This experimental setup facilitates the creation of a controllable source of entangled electron-positron pairs, where entangled events are produced in specific phase spaces. Based on this source and the prior knowledge of the entangled state, we demonstrate the feasibility of measuring the polarization correlations of the entangled $e^+e^-$ pairs through their individual secondary scatterings off two separate additional targets.

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