PreprintCC BY 4.0arXiv
Quantum tomography at the Electron-Ion Collider
Abstract
We initiate the study of quantum state tomography---the experimental reconstruction of the complete spin density matrix---of massless and massive quark-antiquark pairs produced at the future Electron-Ion Collider (EIC). We show that all components of the spin density matrix can be accessed through azimuthal angular correlations between hadron and dihadron pairs generated by the Collins and dihadron fragmentation functions. This enables the experimental investigation of a variety of quantum information properties at the EIC, such as entanglement and Bell-nonlocality. We predict that the recently discovered maximal entanglement in the heavy-quark sector is signaled by a strong modification of the usual Collins angular dependence cos(ϕ+ϕ')
Related
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BibTeX
@misc{fucilla2026quantum,
title = {{Quantum tomography at the Electron-Ion Collider}},
author = {Michael Fucilla and Yuxun Guo and Yoshitaka Hatta},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.32800},
eprint = {2609.32800},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.32800},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Quantum tomography at the Electron-Ion Collider
AU - Michael Fucilla
AU - Yuxun Guo
AU - Yoshitaka Hatta
PY - 2026
DA - 2026/09/26
PB - arXiv
DO - 10.48550/arxiv.2609.32800
UR - https://arxiv.org/abs/2609.32800
AB - We initiate the study of quantum state tomography---the experimental reconstruction of the complete spin density matrix---of massless and massive quark-antiquark pairs produced at the future Electron-Ion Collider (EIC). We show that all components of the spin density matrix can be accessed through azimuthal angular correlations between hadron and dihadron pairs generated by the Collins and dihadron fragmentation functions. This enables the experimental investigation of a variety of quantum information properties at the EIC, such as entanglement and Bell-nonlocality. We predict that the recently discovered maximal entanglement in the heavy-quark sector is signaled by a strong modification of the usual Collins angular dependence cos(ϕ+ϕ')
ER -