Controlled cyclic remote preparation  

作　　者：Li Gong Songya Ma Junli Jiang 

机构地区：[1]Information Security Center,State Key Laboratory of Networking and Switching Technology,Beijing [2]University of Posts and Telecommunications,Beijing 100876,China 2 School of Mathematics and Statistics,Henan University,Kaifeng 475004,China [3]Institute of Mathematics,Henan Academy of Sciences,Zhengzhou 450046,China

出　　处：《Communications in Theoretical Physics》2023年第10期60-70,共11页理论物理通讯（英文版）

基　　金：the National Natural Science Foundation of China(Nos.62172341,62172196,62272208)。

摘　　要：Multi-party quantum communication has gradually attracted widespread attention.To realize the perfect transmission of quantum states among multiple participants,a novel multi-party controlled cyclic remote preparation protocol for arbitrary single-qubit states with three senders is proposed.With the permission of one controller,each sender can transmit an arbitrary singlequbit state to its neighbor.In addition,we give a universal protocol for multi-party controlled cyclic remote preparation of arbitrary single-qubit states in the case of multiple senders,which can realize deterministic cyclic preparation of multiple quantum states in one direction.The scheme shows that the communication task can be successfully achieved only if all senders cooperate with the controller,and there is no need for the senders to employ information splitting and additional operations before performing measurements.Finally,we discuss the cyclic remote preparation protocol with three senders under five types of noisy environment,and the closeness between the output state and original state is measured by calculating fidelity.

关 键 词：controlled cyclic remote preparation network coding measurement basis quantum noise FIDELITY 

分 类 号：O41[理学—理论物理]