2020 Fiscal Year Annual Research Report
Novel imaging technique using Compton cameras and polarized-entangled gamma photons
| Project/Area Number |
19K23436
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Caradonna Pietro 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (10846520)
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| Project Period (FY) |
2019-08-30 – 2021-03-31
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| Keywords | Compton scattering / entangled photons |
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| Outline of Annual Research Achievements |
Compton scattering hinders the detection of the onset of metastatic cancer in Positron Emission Tomography (PET), since it reduces the number of back-to-back photon signal. Our goal is to use quantum entanglement to correct for these scattering loses. So far, this research has reformulated Compton scattering of entangled photons in terms Stokes matrices, making it easier to understand the underlying scattering dynamics, and we have discovered underlying structures in the cross-section which are due solely to entanglement.
An equally important finding was to combine the device capabilities of Compton cameras with a particular type of Compton scattering configuration to find the scattering sites, which we call “the touch cone configuration”. This idea is under a provisional patent, which describes how to extract anatomical information for the first time. In this new theoretical formalism, we consider atomic electron binding effects as well. This is an important concrete outcome since it can be used in future GEANT4 simulations to reflect more accurately the scattering processes in biological material.
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