Continuous-Variable Quantum Network Coding Based on Quantum Discord

作     者：Tao Shang Ran Liu Jianwei Liu Yafei Hou 

作者机构：School of Cyber Science&TechnologyBeihang UniversityBeijing100083China Graduate School of Natural Science and TechnologyOkayama UniversityOkayama Prefecture700-8530Japan 

出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)

年 卷 期：2020年第64卷第9期

页      面：1629-1645页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This project is supported by the National Natural Science Foundation of China(No.61571024,No.61971021) Aeronautical Science Foundation of China(No.2018ZC51016) the National Key Research and Development Program of China(No.2016YFC1000307)for valuable helps 

主　　题：Continuous variable quantum network coding quantum discord entanglement distribution Gaussian cloning 

摘      要：Establishing entanglement is an essential task of quantum communication *** entanglement,quantum discord,as a measure of quantum correlation,is a necessary prerequisite to the success of entanglement *** realize efficient quantum communication based on quantum discord,in this paper,we consider the practical advantages of continuous variables and propose a feasible continuous-variable quantum network coding scheme based on quantum *** means of entanglement distribution by separable states,it can achieve quantum entanglement distribution from sources to targets in a butterfly *** with the representative discrete-variable quantum network coding schemes,the proposed continuous-variable quantum network coding scheme has a higher probability of entanglement distribution and defends against eavesdropping and forgery ***,the deduced relationship indicates that the increase in entanglement is less than or equal to quantum discord.