当前位置: X-MOL 学术Chem. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Entangled Photons from Single Atoms and Molecules
Chemical Physics ( IF 2.3 ) Pub Date : 2018-04-03 , DOI: 10.1016/j.chemphys.2018.04.001
Bengt Nordén

The first two-photon entanglement experiment performed 50 years ago by Kocher and Commins (KC) provided isolated pairs of entangled photons from an atomic three-state fluorescence cascade. In view of questioning of Bell’s theorem, data from these experiments are re-analyzed and shown sufficiently precise to confirm quantum mechanical and dismiss semi-classical theory without need for Bell’s inequalities. Polarization photon correlation anisotropy (A) is useful: A is near unity as predicted quantum mechanically and well above the semi-classic range, 0⩽A⩽1/20A1/2. Although yet to be found, one may envisage a three-state molecule emitting entangled photon pairs, in analogy with the KC atomic system. Antibunching in fluorescence from single molecules in matrix and entangled photons from quantum dots promise it be possible. Molecules can have advantages to parametric down-conversion as the latter photon distribution is Poissonian and unsuitable for producing isolated pairs of entangled photons. Analytical molecular applications of entangled light are also envisaged.



中文翻译:

单原子和分子纠缠的光子

50年前由Kocher和Commins(KC)进行的第一个双光子纠缠实验提供了来自原子三态荧光级联的孤立的纠缠光子对。考虑到对贝尔定理的质疑,对这些实验的数据进行了重新分析,并显示出足够精确的结果,以确认量子力学和消除半经典理论,而无需贝尔不等式。极化光子相关各向异性(A)是有用的:A在机械上预测为量子时接近于1,并且远高于半经典范围0⩽A⩽1/ 20一个1个/2个。尽管尚未发现,但可以设想类似于KC原子系统的三态分子发射纠缠的光子对。来自基质中单个分子的荧光的反聚束和来自量子点的纠缠光子的抗聚束有望成为可能。分子在参数下转换方面可能具有优势,因为后者的光子分布是泊松分布,不适合产生孤立的纠缠光子对。还设想了纠缠光的分析分子应用。

更新日期:2018-04-03
down
wechat
bug