Pauli噪声环境下任意二粒子受控短距离隐形传态  

Controlled Short-distance Quantum Teleportation for Arbitrary Two-particles State in Pauli Noise Environment

作　　者：向生建 XIANG Shengjian(School of Mathematical Science,Sichuan Normal University,Chengdu 610066,China)

机构地区：[1]四川师范大学数学科学学院,成都610066

出　　处：《计算机科学》2023年第S01期631-634,共4页Computer Science

基　　金：四川省重点研发计划(2020YFG0290);成都市量子科技计划(2021-YF09-00116-GX)。

摘　　要：量子隐形传态是量子通信中研究的热点之一。有别于传统的隐形传态方案,短距离隐形传态通过加强两个参与者距离上的限制以进一步节约宝贵的量子纠缠资源。但这样的限制同时也增加了传输双方作弊的可能。为此,文中在现有短距离隐形传输研究的基础上加入第三方控制者,提高了传输过程的安全性。同时,由于粒子在传输过程中不可避免地会遭受信道噪声的影响,理想环境下的隐形传输是不可能的。保真度是刻画传输前后量子态相似性的工具,文中进一步分析了作为普遍使用的噪声信道模型即Pauli噪声信道对二粒子受控短距离隐形传输保真度的影响。最终得出,不同类型的Pauli噪声信道下,发送者所传输二粒子的纠缠程度不同保真度也不同。这为短距离隐形传输的实验研究以及量子网络发展提供了一些参考价值。The quantum teleportation is one of the hot topics in the quantum communication.The short-distance teleportation,different from the traditional teleportation,can further save costly quantum entanglement resource based on the restriction in the distance.However,this also increases the probability in terms of cheating for the participants.Therefore,this paper proposes another short-distance quantum teleportation for arbitrary two-particles state scheme with a controller in order to enhance the safety.At the same time,it is impossible for quantum teleportation in an ideal environment,due to a fact that the particle will be ine-vitably affected by the noise channel during the distributing period.This paper also analyzes the influence of Pauli noise,which is a widely used noise channel model,on the fidelity of a two-particles state.As a result,the different concurrence in the two-particles state can generate different fidelity in some typical Pauli noise channel.This research can provide some theoretical value in the aspect of quantum communication network and the experiment research.

关 键 词：量子隐形传态 短距离 控制者 安全性 Pauli噪声 保真度 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]