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Duplicating classical bits with universal quantum cloning machine

文献类型：期刊论文

作者Cai, QingYu2; Wang, MingHao1,2
刊名SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期2019-03-01
卷号62期号:3页码:5
关键词quantum no-cloning classical duplication error-correction correspondence principle
ISSN号1674-7348
DOI10.1007/s11433-018-9296-3
英文摘要It seems there is a large gap between quantum cloning and classical duplication since quantum mechanics forbid perfect copies of unknown quantum states. In this paper, we prove that a classical duplication process can be realized by using a universal quantum cloning machine (QCM). A classical bit is encoded not on a single quantum state, but on a large number of single identical quantum states. Errors are inevitable when copying these identical quantum states due to the quantum no-cloning theorem. When a small part of errors are ignored, i.e., errors as the minority are automatically corrected by the majority, the fidelity of duplicated copies of classical information will approach unity infinitely. In this way, the classical bits can be duplicated precisely with a universal QCM, which presents a natural transition from quantum cloning to classical duplication. The implement of classical duplication by using QCM shines new lights on the universality of quantum mechanics.
WOS关键词PROBABILISTIC CLONING ; STATE DISCRIMINATION ; CANNOT
资助项目National Natural Science Foundation of China[11725524] ; National Natural Science Foundation of China[61471356]
WOS研究方向Physics
语种英语
WOS记录号WOS:000449972200001
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.wipm.ac.cn/handle/112942/13368]  
专题中国科学院武汉物理与数学研究所
通讯作者Cai, QingYu
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonances & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Cai, QingYu,Wang, MingHao. Duplicating classical bits with universal quantum cloning machine[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(3):5.
APA Cai, QingYu,&Wang, MingHao.(2019).Duplicating classical bits with universal quantum cloning machine.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(3),5.
MLA Cai, QingYu,et al."Duplicating classical bits with universal quantum cloning machine".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.3(2019):5.

入库方式： OAI收割

来源：武汉物理与数学研究所

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