@Article{cmc.2020.09820, AUTHOR = {Tao Shang, Ran Liu, Jianwei Liu, Yafei Hou}, TITLE = {Continuous-Variable Quantum Network Coding Based on Quantum Discord}, JOURNAL = {Computers, Materials \& Continua}, VOLUME = {64}, YEAR = {2020}, NUMBER = {3}, PAGES = {1629--1645}, URL = {http://www.techscience.com/cmc/v64n3/39449}, ISSN = {1546-2226}, ABSTRACT = {Establishing entanglement is an essential task of quantum communication technology. Beyond entanglement, quantum discord, as a measure of quantum correlation, is a necessary prerequisite to the success of entanglement distribution. To 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 discord. By means of entanglement distribution by separable states, it can achieve quantum entanglement distribution from sources to targets in a butterfly network. Compared 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 attacks. Particularly, the deduced relationship indicates that the increase in entanglement is less than or equal to quantum discord.}, DOI = {10.32604/cmc.2020.09820} }