Quantum Entanglement Autodistillation in Baryon Pair Decays
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911099878637568 |
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| author | Feng, Hai-Long Tang, Hao Guo, Wu-zhong Qin, Qin |
| author_facet | Feng, Hai-Long Tang, Hao Guo, Wu-zhong Qin, Qin |
| contents | We study the spin-entangled mixed state of a spin-1/2 baryon-antibaryon pair produced in the process e+e- to J/psi, psi(2S) to BBbar. We demonstrate that the spin entanglement of the system can increase following the decays B to b + M and Bbar to bbar + Mbar, where b and bbar are spin-1/2 baryons and M, Mbar are spin-0 mesons. This phenomenon, known as entanglement autodistillation, represents a probabilistic amplification of entanglement during the decay process. We analyze the underlying mechanism and show that it depends only on the initial state of the BBbar system and the decay parameter alphaD, but not on the phase parameter phiD. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15798 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum Entanglement Autodistillation in Baryon Pair Decays Feng, Hai-Long Tang, Hao Guo, Wu-zhong Qin, Qin High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics We study the spin-entangled mixed state of a spin-1/2 baryon-antibaryon pair produced in the process e+e- to J/psi, psi(2S) to BBbar. We demonstrate that the spin entanglement of the system can increase following the decays B to b + M and Bbar to bbar + Mbar, where b and bbar are spin-1/2 baryons and M, Mbar are spin-0 mesons. This phenomenon, known as entanglement autodistillation, represents a probabilistic amplification of entanglement during the decay process. We analyze the underlying mechanism and show that it depends only on the initial state of the BBbar system and the decay parameter alphaD, but not on the phase parameter phiD. |
| title | Quantum Entanglement Autodistillation in Baryon Pair Decays |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics |
| url | https://arxiv.org/abs/2504.15798 |