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arXiv · 2510.24325

Emergent Bell-Triplet State in Proton-Proton Scattering

Z. X. Shen·H. Y. Shang·Y. G. Ma·D. Bai·S. M. Wang·Z. C. Xu·Y. Ayyad·C. Filgueira
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Abstract

Entanglement is a key resource in quantum information science, yet its properties and applications in nuclear systems remain largely unexplored. Here, using proton-proton scattering as a quantum laboratory, we report the emergence of a near-pure Bell-triplet state at a laboratory energy of 151 MeV and a center-of-mass scattering angle of 90 degrees. In this unique kinematic regime, the scattering amplitude functions as a transition operator connecting distinct Bell states. Building upon this emergent resource, we propose a quantum teleportation protocol for proton spins, exploiting the intrinsic Hamiltonian of the strong interaction to perform the requisite Bell measurement. These findings effectively bridge few-body nuclear physics and quantum technology, establishing proton-proton scattering as both a source of high-fidelity entanglement and a natural processor for quantum information.

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Z. X. Shen, H. Y. Shang, Y. G. Ma, D. Bai, S. M. Wang, Z. C. Xu, Y. Ayyad, C. Filgueira. 2025-10-28. Emergent Bell-Triplet State in Proton-Proton Scattering. https://arxiv.org/abs/2510.24325

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