Gang Xu¹, Rui-Ting Shan², Xiu-Bo Chen², Mianxiong Dong³, Yu-Ling Chen^4,*

CMC-Computers, Materials & Continua, Vol.69, No.1, pp. 339-349, 2021, DOI:10.32604/cmc.2021.017968

Abstract With the emergence of classical communication security problems, quantum communication has been studied more extensively. In this paper, a novel probabilistic hierarchical quantum information splitting protocol is designed by using a non-maximally entangled four-qubit cluster state. Firstly, the sender Alice splits and teleports an arbitrary one-qubit secret state invisibly to three remote agents Bob, Charlie, and David. One agent David is in high grade, the other two agents Bob and Charlie are in low grade. Secondly, the receiver in high grade needs the assistance of one agent in low grade, while the receiver in low grade needs the aid of… More >

Zhen-Zhen Li¹, Zi-Chen Li^1,*, Xiu-Bo Chen², Zhiguo Qu³, Xiaojun Wang⁴, Haizhu Pan⁵

CMC-Computers, Materials & Continua, Vol.68, No.2, pp. 2651-2663, 2021, DOI:10.32604/cmc.2021.016960

Abstract

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… More >