Dynamics of entangled H(2p) pairgenerated in the photodissociation of H_2
Dynamics of entangled H(2p) pairgenerated in the photodissociation of H_2
复制标题
H_2光解产生纠缠H(2p)对的动力学
DOI：
10.1088/1742-6596/388/1/012024
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
T. Tanabe and N. Kouchi
中科院分区：
文献类型：
--
作者：
T. Odagiri;T. Tanabe and N. Kouchi
在入射光子能量为33.66 eV，氢气压力为0.40 Pa和0.02 Pa时，测量了一对H （2p）原子在h2光解过程中发射的两个Lyman-α光子的重合时间谱，得到了两个Lyman-α光子的角分布。实验的角度分布表明了我们小组理论预测的H （2p）原子纠缠对的产生（Miyagi et al . 2007 J. Phys）。B 40 617)和一种新的反应的作用，即纠缠对H （2p）原子与H 2分子的反应，有效地改变了纠缠。结果表明，在0.02 Pa下比在0.40 Pa下有更多纠缠的H （2p）原子对存活。在0.02 Pa时，符合时间谱中的衰变时间常数约为单个H （2p）原子寿命的一半，为1.60 ns，而在0.40 Pa时，衰变时间常数与单个H （2p）原子的寿命一致。由此可见，比单个H （2p）原子寿命更快的衰变源于H （2p）原子对的纠缠。
We have measured the coincidence time spectra of two Lyman-α photons emitted by a pair of H (2p) atoms in the photodissociation of H 2 at the incident photon energy of 33.66 eV and at the hydrogen gas pressures of 0.40 Pa and 0.02 Pa, from which the angular distributions of two Lyman-α photons have been obtained. The experimental angular distributions indicate the generation of the entangled pair of H (2p) atoms as predicted by the theory of our group (Miyagi et al 2007 J. Phys. B 40 617) and the role of a new kind of reaction, ie the reaction of the entangled pair of H (2p) atoms with an H 2 molecule that efficiently changes the entanglement. It has turned out that more entangled pairs of H (2p) atoms survive at 0.02 Pa than at 0.40 Pa. The decay time constant in the coincidence time spectrum at 0.02 Pa is approximately half the lifetime of a single H (2p) atom, 1.60 ns, while the decay time constant at 0.40 Pa is in agreement with the lifetime of a single H (2p) atom. It follows that the decay faster than the lifetime of a single H (2p) atom originates from the entanglement in the pair of H (2p) atoms.