Optimal joint remote state preparation in the presence of various types of noises

被引：4
作者：
Nguyen V.H. [1 ]
Cao T.B. [2 ]
Nguyen B.A. [2 ]
机构：
[1] Department of Physics, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi
[2] Center for Theoretical Physics, Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi
来源：
| 1600年 / IOP Publishing Ltd卷 / 08期
关键词：
Four noise types; Joint remote state preparation; Kraus operators; Optimal averaged fidelity;
D O I：
10.1088/2043-6254/aa5980
中图分类号：
学科分类号：
摘要：
A main obstacle faced by any quantum information processing protocol is the noise that degrades the desired coherence/entanglement. In this work we study by means of Kraus operators the effect of four typical types of noises on the quality of joint remote state preparation of a single-qubit state using a three-qubit Greenberger-Horne-Zeilinger-type state as the initial quantum channel. Assuming that two of the three involved qubits independently suffer a type of noise, we derive analytical expressions not only for the optimal averaged fidelities but also for the boundaries in phase space of the domains in which the joint remote state preparation protocol outperforms the classical one. Detailed discussion is given for each of the total 16 noisy scenarios. We also provide physical interpretation for the obtained results and outline possible future topics. © 2017 Vietnam Academy of Science & Technology.
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