量子电子学报2011，Vol.28Issue(5)：583-587,5.DOI:10.3969/j.issn.1007-5461.2011.05.012
一类最优相位协变量子克隆
A class of optimal phase-covariant quantum cloning
摘要
Abstract
The phase-covariant quantum cloning has an important application in quantum cryptography. By exploiting a general unitary transformation, the fidelity of clones is derived. The result shows that there exists a class of optimal phase-covariant quantum cloning. For these explicit transformations of the phase-covariant quantum cloning, the fidelity of clones is maximal and equal. Based on the cavity quantum electrodynamics, a scheme to implement the transformations of quantum cloning is proposed.关键词
量子信息/量子克隆/最优相位协变量子克隆/腔量子电动力学Key words
quantum information/ quantum cloning/ optimal phase-covariant quantum cloning/ cavity quantum electrodynamics分类
数理科学引用本文复制引用
张文海,戴结林,曹卓良,杨名..一类最优相位协变量子克隆[J].量子电子学报,2011,28(5):583-587,5.基金项目
国家自然科学基金(10704001)、安徽省级高等学校自然科学研究(KJ2010ZD08,KJ2010B172,KJ2010B204)、淮南师范学院博士研究启动资金资助项目 （10704001）
