量子密集编码的理论研究进展  

Theoretical Quantum Dense Coding

作　　者：莫智文[1] 杨雪 江雨婷 柏明强[1] MO Zhiwen;YANG Xue;JIANG Yutin;BAI Mingqiang(College of Mathematics and Software Science, Sichuan Normal University, Chengdu 610066, Sichuan)

机构地区：[1]四川师范大学数学与软件科学学院,四川成都610066

出　　处：《四川师范大学学报（自然科学版）》2019年第1期115-127,共13页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金(61673285;11671284);四川省科技支撑计划项目(2017JY0197;2015JY0002);四川省青年科技基金(2017JQ0046)

摘　　要：量子纠缠是量子信息论的1种重要物理资源.在经典通信中,发送1个经典比特,只能得到1个比特经典信息,而在量子通信中,利用量子纠缠的奇妙特性,发送1个量子比特,可以得到2个比特经典信息,这就是量子纠缠引发的新的关注点—量子密集编码.综述量子密集编码在量子信息论的研究现状,结合已有的Bennett密集编码方案和受控密集编码方案,展望了同时密集编码及受控同时密集编码在量子通信中的研究前景.Quantum entanglement is an essential physical resource in quantum information theory.In classical communication,only one bit of classical information can be obtained by sending a classical bit.However,in quantum communication,by sending a qubit,we have the ability to achieve transmission of two bits of classical information,this is the new focus of quantum entanglement,namely quantum dense coding.In this paper,the current states and progress of quantum dense coding in quantum information theory are outlined.Combining the existing Bennett dense coding and controlled dense coding schemes,we discuss the prospect of the future work of simultaneous dense coding and controlled simultaneous dense coding.

关 键 词：量子态 量子纠缠 量子密集编码 量子测量 FOURIER变换 

分 类 号：O59[理学—应用物理]