Spin Teleportation via Bell-Triplet States Emergent from Proton-Proton Scattering

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 effectively. 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.

arXiv:2510.24325 [nucl-th]

(or arXiv:2510.24325v4 [nucl-th] for this version)

https://doi.org/10.48550/arXiv.2510.24325 Focus to learn more arXiv-issued DOI via DataCite

Phys. Rev. Lett. 137, 142501 2026

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