Cao Lianzhen, Liu Xia, Yang Yang, Zhang Qinwei, Zhao Jiaqiang, Lu Huaixin
Department of Physics and Optoelectronic Engineering, Weifang University, Weifang 261061, China.
Entropy (Basel). 2020 Feb 15;22(2):219. doi: 10.3390/e22020219.
Quantum correlations of higher-dimensional systems are an important content of quantum information theory and quantum information application. The quantification of quantum correlation of high-dimensional quantum systems is crucial, but difficult. In this paper, using the second-order nonlinear optical effect and multiphoton interference enhancement effect, we experimentally implement the photonic qutrit states and demonstrate the spin-1 information entropic inequality for the first time to quantitative quantum correlation. Our work shows that information entropy is an important way to quantify quantum correlation and quantum information processing.
高维系统的量子关联是量子信息理论和量子信息应用的重要内容。高维量子系统量子关联的量化至关重要但颇具难度。本文利用二阶非线性光学效应和多光子干涉增强效应，通过实验实现了光子三量子比特态，并首次演示了用于定量量子关联的自旋-1信息熵不等式。我们的工作表明，信息熵是量化量子关联和量子信息处理的重要方式。
