Author Affiliations
Abstract
1 Key Laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Lab of Quantum Information, University of Science and Technology of China, Hefei 230026, China
3 e-mail: yshzhang@ustc.edu.cn
4 e-mail: yzgui@siom.ac.cn
Quantum beats can be produced in fourth-order interference such as in a Hong–Ou–Mandel (HOM) interferometer by using photons with different frequencies. Here we present theoretically the appearance of interference of quantum beats when the HOM interferometer is combined with a Franson-type interferometer. This combination can make the interference effect of photons with different colors take place not only within the coherence time of downconverted fields but also in the region beyond that. We expect that it can provide a new method in quantum metrology, as it can realize the measurement of time intervals in three scales.
Coherent optical effects Photon statistics Quantum detectors Photonics Research
2015, 3(3): 03000082
1 中国科学院上海光学精密机械研究所,上海,201800
2 中国工程物理研究院激光聚变研究中心,四川,绵阳,621900
采用20 μm的狭缝配平面晶体谱仪构成空间分辨光谱测量系统,对Al激光等离子体的K壳层发射谱进行测量.利用Al的Ly-α线谱的翼部Stark展宽效应推得电子密度空间分布轮廓,建立了翼部Stark展宽法测量高密度等离子体电子密度的诊断技术.
激光等离子体 翼部Stark展宽 电子密度 X射线光谱学 Laser-produced plasma Stark-broadened wings Electron density X-ray spectroscopy
