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PreprintCC BY 4.0arXiv

Qubit-Qutrit Quantum Tomography of hadronic Λϕ and ΛK∗ 0 systems

  • Veronica Kanachova
  • Feng Liu
  • Zhoudunming Tu
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Abstract

Quantum-information observables have emerged in recent years as new tools in nuclear and particle physics, from entanglement in top-quark pairs to spin correlations in ΛΛ̅ production. Extending these studies to unequal-spin hadronic final states poses a fundamental challenge: the 6×6 density matrix of a qubit-qutrit system contains 35 independent spin parameters, but the decays of ΛV pairs, with V=ϕ or K*0, provide access to only 23 due to the hidden vector polarization from the strong decay. In this Letter, we formulate a qubit-qutrit quantum tomography (QQQT) technique for these spin-1/2⊗1 systems and establish exact criteria for entanglement certification from the \textit{incomplete} density matrix. Compared with the ΛΛ̅ system, QQQT of Λϕ and ΛK*0 provides a new probe of nonperturbative QCD hadronization, enabling a direct comparison of the spin evolution of entangled quark pairs produced from the vacuum as they hadronize into a baryon or a vector meson.

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Cite

BibTeXRIS
BibTeX
@misc{kanachova2026qubitqutrit,
  title = {{Qubit-Qutrit Quantum Tomography of hadronic $Λϕ$ and $ΛK^\ast 0$ systems}},
  author = {Veronica Kanachova and Feng Liu and Zhoudunming Tu},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.11151},
  eprint = {2609.11151},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.11151},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Qubit-Qutrit Quantum Tomography of hadronic Λϕ and ΛK^∗ 0 systems
AU  - Veronica Kanachova
AU  - Feng Liu
AU  - Zhoudunming Tu
PY  - 2026
DA  - 2026/09/10
PB  - arXiv
DO  - 10.48550/arxiv.2609.11151
UR  - https://arxiv.org/abs/2609.11151
AB  - Quantum-information observables have emerged in recent years as new tools in nuclear and particle physics, from entanglement in top-quark pairs to spin correlations in ΛΛ̅ production. Extending these studies to unequal-spin hadronic final states poses a fundamental challenge: the 6×6 density matrix of a qubit-qutrit system contains 35 independent spin parameters, but the decays of ΛV pairs, with V=ϕ or K^*0, provide access to only 23 due to the hidden vector polarization from the strong decay. In this Letter, we formulate a qubit-qutrit quantum tomography (QQQT) technique for these spin-1/2⊗1 systems and establish exact criteria for entanglement certification from the \textit{incomplete} density matrix. Compared with the ΛΛ̅ system, QQQT of Λϕ and ΛK^*0 provides a new probe of nonperturbative QCD hadronization, enabling a direct comparison of the spin evolution of entangled quark pairs produced from the vacuum as they hadronize into a baryon or a vector meson.
ER  -