论文标题
歼灭光子的纠缠
Entanglement of annihilation photons
论文作者
论文摘要
我们介绍了一项新的实验研究的结果，该研究是关于在静止时正电子 - 电子歼灭中产生的光子对的量子纠缠的结果。实验设置包括康普顿极化器系统，以测量纠缠和变形状态中an灭光子的康普顿散射。在偏光仪中测量之前，通过对初始光子之一进行预散制来制备破坏性状态。首次进行了纠缠和因此可分离状态的an灭光子的极化相关性的直接比较。在两个量子状态下，散射光子的角分布都相同，这是量子键入正电子发射断层扫描的意外发现。此外，铃铛不平等中的相关函数对于纠缠和可分离状态也相同。因此，尽管在一系列实验中进行了许多测量，但仍没有实验证明an灭光子的纠缠。这些结果符合对纠缠和特定混合可分离量子状态的相同康普顿散射横截面的最新理论预测，并对铃铛定理的普遍性提出了质量理论中贝尔定理的普遍性的怀疑。
We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. The experimental setup includes a system of Compton polarimeters to measure the Compton scattering of annihilation photons in entangled and decoherent states. Decoherent states are prepared by pre-scattering of one of the initial photons prior to measurements in polarimeters. For the first time, a direct comparison of the polarization correlations of annihilation photons in the entangled and thus prepared separable states has been carried out. The angular distributions of scattered photons turned out to be the same in both quantum states, which is an unexpected discovery for the quantum-entangled positron emission tomography. Moreover, the correlation function in the Bell's inequality is also the same for entangled and separable states. It follows that, despite numerous measurements in a series of experiments, there is still no experimental proof of the entanglement of annihilation photons. These results are in line with recent theoretical predictions of an identical Compton scattering cross-section for entangled and specific mixed separable quantum states and cast doubt on the universality of the Bell's theorem for testing the entanglement and nonlocality in quantum theory.
