Decay dynamics of the entangled atom-pair

本课题组预测了氢分子光解离后的H（2p）原子对是纠缠的。在本研究中，我们的目标是检验预测，确定纠缠态的H（2p）原子和研究纠缠原子对的动力学。原子对中的纠缠被复制到光子对中。利用两个光子探测器沿入射光束独立沿着旋转的新装置，在较宽的气压范围内测量了莱曼α光子对的角相关函数和时间相关函数，并与理论预测进行了比较。事实证明，在这对氢原子中至少有一个氢原子的磁量子数是不确定的。

It was predicted by our group that the pair of H(2p) atoms following the photodissociation of molecular hydrogen is entangled. In the present study we aim at examining the prediction, determining the entangled state of H(2p) atoms and investigating the dynamics of the entangled atom-pair. The entanglement in the atom-pair is copied to the photon-pair. By using the new apparatus, in which two photon-detectors are rotated independently along the incident light beam, the angular-correlation and time-correlation functions of the pair of the Lyman-alpha photons have been measured in the extensive range of pressures and compared with the theoretical prediction. It has turned out that the magnetic quantum number of at least one hydrogen atom in the pair is not definite.