测量基角度偏差对单量子态隐形传送的影响研究  

Influence of Angular Deviation of Measurement Basis on Teleportation of Single Quantum State

作　　者：韩泽楠 李言然 章礼华 吴义恒 HAN Zenan;LI Yanran;ZHANG Lihua;WU Yiheng(School of Electronic Engineering and Intelligent Manufacturing,Anqing Normal University,Anqing 246133,China)

机构地区：[1]安庆师范大学电子工程与智能制造学院,安徽安庆246133

出　　处：《安庆师范大学学报（自然科学版）》2023年第1期42-47,共6页Journal of Anqing Normal University(Natural Science Edition)

基　　金：安徽省重点研究与开发计划项目(202004f06020021);安徽省高等学校省级质量工程项目(2020jyxm1080,2020szsfkc0548,2021cyxy04);安徽省高校自然科学研究项目(KJ2019A0564);安徽省教育厅高校优秀拔尖人才项目(gxgnfx2021140)。

摘　　要：量子隐形传态是量子信息传输的一种重要方式,在量子态传送过程中不可避免地存在信道噪声。本文构造了一组测量算符以分析量子态与测量算符偏差角度的关系,并给出了量子测量信道的信道传递矩阵。通过对未知单量子态隐形传送协议的分析,给出了发送方和接收方测量基的旋转偏差对量子态传送结果的影响,其中接收方的判定概率不再恒为0.25,且从测量信道获取的量子平均互信息量在旋转角为0或π时达到最大值。Quantum teleportation is an important way of quantum information transmission,and channel noise is inevitable in the process of quantum state transmission.Based on the constructed set of measurement operators in this paper,the deviation angle relationship between quantum state and measurement operator is analyzed,and the channel transfer matrix of quantum measurement channel is given.Through the analysis of the unknown single quantum state teleportation protocol,it is given by the influence of the measurement basis rotation deviation between the sender and the receiver on the quantum state transmission results.The probability of detection is no longer constant 0.25,and the quantum mutual information obtained from the measurement channel reaches the maximum value when the rotation angle is 0 orπ.

关 键 词：测量基 量子隐形传态 量子比特 量子平均互信息量 

分 类 号：TN918[电子电信—通信与信息系统]