Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner
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arXiv
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2024
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| author | Moskal, P. Kumar, D. Sharma, S. Beyene, E. Y. Chug, N. Coussat, A. Curceanu, C. Czerwinski, E. Das, M. Dulski, K. Gorgol, M. Jasinska, B. Kacprzak, K. Kaplanoglu, T. Kaplon, L. Kozik, T. Lisowski, E. Lisowski, F. Mryka, W. Niedzwiecki, S. Parzych, S. del Rio, E. P. Radler, M. Skurzok, M. Stepien, E. L. Tanty, P. Ardebili, K. Tayefi Eliyan, K. Valsan |
| author_facet | Moskal, P. Kumar, D. Sharma, S. Beyene, E. Y. Chug, N. Coussat, A. Curceanu, C. Czerwinski, E. Das, M. Dulski, K. Gorgol, M. Jasinska, B. Kacprzak, K. Kaplanoglu, T. Kaplon, L. Kozik, T. Lisowski, E. Lisowski, F. Mryka, W. Niedzwiecki, S. Parzych, S. del Rio, E. P. Radler, M. Skurzok, M. Stepien, E. L. Tanty, P. Ardebili, K. Tayefi Eliyan, K. Valsan |
| contents | In state-of-the-art Positron Emission Tomography (PET), information about annihilation photon polarization is unavailable. Here, we present a PET scanner built from plastic scintillators, where annihilation photons primarily interact via the Compton effect, providing information about both photon polarization and propagation direction. Using this plastic-based PET, we determined the distribution of the relative angle between polarization planes of photons from positron-electron annihilation in a porous polymer. The amplitude of the observed distribution is smaller than predicted for maximally quantum-entangled two-photon states but larger than expected for separable photons. This result can be well explained by assuming that photons from pick-off annihilation are not entangled, while photons from direct and para-positronium annihilations are maximally entangled. Our result indicates that the degree of entanglement depends on the annihilation mechanism in matter, opening new avenues for exploring polarization correlations in PET as a diagnostic indicator. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_08574 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner Moskal, P. Kumar, D. Sharma, S. Beyene, E. Y. Chug, N. Coussat, A. Curceanu, C. Czerwinski, E. Das, M. Dulski, K. Gorgol, M. Jasinska, B. Kacprzak, K. Kaplanoglu, T. Kaplon, L. Kozik, T. Lisowski, E. Lisowski, F. Mryka, W. Niedzwiecki, S. Parzych, S. del Rio, E. P. Radler, M. Skurzok, M. Stepien, E. L. Tanty, P. Ardebili, K. Tayefi Eliyan, K. Valsan Nuclear Experiment Medical Physics Quantum Physics In state-of-the-art Positron Emission Tomography (PET), information about annihilation photon polarization is unavailable. Here, we present a PET scanner built from plastic scintillators, where annihilation photons primarily interact via the Compton effect, providing information about both photon polarization and propagation direction. Using this plastic-based PET, we determined the distribution of the relative angle between polarization planes of photons from positron-electron annihilation in a porous polymer. The amplitude of the observed distribution is smaller than predicted for maximally quantum-entangled two-photon states but larger than expected for separable photons. This result can be well explained by assuming that photons from pick-off annihilation are not entangled, while photons from direct and para-positronium annihilations are maximally entangled. Our result indicates that the degree of entanglement depends on the annihilation mechanism in matter, opening new avenues for exploring polarization correlations in PET as a diagnostic indicator. |
| title | Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner |
| topic | Nuclear Experiment Medical Physics Quantum Physics |
| url | https://arxiv.org/abs/2407.08574 |