MeV体系中的光子量子纠缠及其在PET成像中的应用
Photon quantum entanglement in the MeV regime and its application in PET imaging
摘要：
正电子发射断层成像（PET）是一种广泛用于医学研究和临床诊断的成像模式。在这里，我们证明，通过详细的实验和模拟，探索利用PET中使用的两个正电子湮没光子之间的线性偏振的量子纠缠的好处。一个新的模拟，其中包括预测的影响量子纠缠的MeV尺度的光子与物质的相互作用，通过与碲锌镉（CZT）PET演示装置的实验数据进行比较，验证。此外，修改后的设置使第一个实验约束纠缠损失的光子在兆电子伏制度。量子纠缠PET提供了新的方法来解决下一代成像的关键挑战。作为潜在益处的指示，我们提出了一种仅使用PET事件中的量子纠缠信息来量化和去除住院患者散射和随机背景的简单方法。
英文摘要：
Positron Emission Tomography (PET) is a widely-used imaging modality for medical research and clinical diagnosis. Here we demonstrate, through detailed experiments and simulations, an exploration of the benefits of exploiting the quantum entanglement of linear polarisation between the two positron annihilation photons utilised in PET. A new simulation, which includes the predicted influence of quantum entanglement on the interaction of MeV-scale photons with matter, is validated by comparison with experimental data from a cadmium zinc telluride (CZT) PET demonstrator apparatus. In addition, a modified setup enabled the first experimental constraint on entanglement loss for photons in the MeV regime. Quantum-entangled PET offers new methodologies to address key challenges in next generation imaging. As an indication of the potential benefits, we present a simple method to quantify and remove in-patient scatter and random backgrounds using only the quantum entanglement information in the PET events.
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