Xiang G Y, Huang Y F, Sun F W, Zhang P, Ou Z Y, Guo G C
Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China.
Phys Rev Lett. 2006 Jul 14;97(2):023604. doi: 10.1103/PhysRevLett.97.023604.
An experiment is performed to demonstrate the temporal distinguishability of a four-photon state and a six-photon state, both from parametric down-conversion. The experiment is based on a multiphoton interference scheme in a recently discovered projection measurement of a maximally entangled N-photon state. By measuring the visibility of the interference dip, we can distinguish the various scenarios in the temporal distribution of the pairs and, thus, quantitatively determine the degree of temporal distinguishability of a multiphoton state.
进行了一项实验，以证明通过参量下转换产生的四光子态和六光子态在时间上的可区分性。该实验基于一种多光子干涉方案，该方案存在于最近发现的对最大纠缠N光子态的投影测量中。通过测量干涉极小值的可见度，我们可以区分对的时间分布中的各种情况，从而定量确定多光子态的时间可区分程度。
