@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}
}