Optical implementation of quantum random walks using weak cross-Kerr media  

作　　者：WANG Chuan LI YanSong HAO Liang 

机构地区：[1]School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Key Laboratory of Optical Communication and Lightwave Technologies,Beijing University of Posts and Telecommunications,Beijing 100876,China [3]Department of Physics,Tsinghua University,Beijing 100084,China

出　　处：《Chinese Science Bulletin》2011年第20期2088-2091,共4页

基　　金：supported by the National Basic Research Program of China (2010CB923202);the Specialized Research Fund for Doctoral Programs of the Ministry of Education of China(20090005120008);the Fundamental Research Funds for the Central Universities(BUPT2009RC0710);the National Natural Science Foundation of China(10805010,10947151)

摘　　要：Weak cross-Kerr media provides additional degrees of freedom of qubits in quantum information processing.In this paper,by exploiting weak cross-Kerr nonlinearity,we propose an optical implementation scheme of one-dimensional quantum random walks. The random walks are described by the interaction of single photons with cross-Kerr media.The proposed scheme can also be used to implement one-dimensional quantum random walks on an infinite line.Weak cross-Kerr media provides additional degrees of freedom of qubits in quantum information processing.In this paper,by exploiting weak cross-Kerr nonlinearity,we propose an optical implementation scheme of one-dimensional quantum random walks. The random walks are described by the interaction of single photons with cross-Kerr media.The proposed scheme can also be used to implement one-dimensional quantum random walks on an infinite line.

关 键 词：随机游动 光量子 媒体 KERR非线性 量子信息处理 相互作用 克尔介质 量子位 

分 类 号：O431.2[机械工程—光学工程]