A Practical Quantum Network Coding Protocol Based on Non-Maximally Entangled State  

作　　者：Zhen-Zhen Li Zi-Chen Li Xiu-Bo Chen Zhiguo Qu Xiaojun Wang Haizhu Pan 

机构地区：[1]School of Information Engineering,Beijing Institute of Graphic Communication,Beijing,102600,China [2]Information Security Center,State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing,100876,China [3]Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,Nanjing University of Information Science and Technology,Nanjing,210044,China [4]School of Electronic Engineering,Dublin City University,Dublin,9,Ireland [5]College of Computer and Control Engineering,Qiqihar University,Qiqihar,161006,China

出　　处：《Computers, Materials & Continua》2021年第8期2651-2663,共13页计算机、材料和连续体（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61671087,92046001,61962009,61003287,61370188,61373131);the Scientific Research Common Program of Beijing Municipal Commission of Education(KM202010015009,KM201610015002);the Joint Funding Project of Beijing Municipal Commission of Education and Beijing Natural Science Fund Committee(KZ201710015010);the Initial Funding for the Doctoral Program of BIGC(27170120003/020);the Fok Ying Tung Education Foundation(Grant No.131067);the Fundamental Research Funds for the Central Universities(Grant No.2019XD-A02);the Fundamental Research Funds in Heilongjiang Provincial Universities(135509116);the Major Scientific and Technological Special Project of Guizhou Province(20183001);Huawei Technologies Co.Ltd.(No.YBN2020085019),PAPD and CICAEET funds.

摘　　要：In many earlier works,perfect quantum state transmission over the butterfly network can be achieved via quantum network coding protocols with the assist of maximally entangled states.However,in actual quantum networks,a maximally entangled state as auxiliary resource is hard to be obtained or easily turned into a non-maximally entangled state subject to all kinds of environmental noises.Therefore,we propose a more practical quantum network coding scheme with the assist of non-maximally entangled states.In this paper,a practical quantum network coding protocol over grail network is proposed,in which the non-maximally entangled resource is assisted and even the desired quantum state can be perfectly transmitted.The achievable rate region,security and practicability of the proposed protocol are discussed and analyzed.This practical quantum network coding protocol proposed over the grail network can be regarded as a useful attempt to help move the theory of quantum network coding towards practicability.

关 键 词：Quantum network coding non-maximally entangled state quantum grail network practical protocol 

分 类 号：O41[理学—理论物理]