Experimental quantum deletion in an NMR quantum information processor

作     者：LONG Yu FENG GuanRu PEARSON Jasong LONG GuiLu 

作者机构：State Key Laboratory of Low-dimensional Quantum Physics and Department of Physics Tsinghua University Collaborative Innovation Center of Quantum Matter Tsinghua National Laboratory for Information Science and Technology Tsinghua University 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2014年第57卷第7期

页      面：1256-1261页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11175094 and 91221205) the National Basic Research Program of China(Grant No.2011CB9216002) 

主　　题：quantum deletion algorithm quantum computing nuclear magnetic resonance quantum search algorithm 

摘      要：We report an NMR experimental realization of a rapid quantum deletion algorithm that deletes marked states in an unsorted *** classical deletion,where search and deletion are equivalent,quantum deletion can be implemented with only a single query,which achieves exponential speed-up compared to the optimal classical *** the experimental realization,the GRAPE algorithm was used to obtain an optimized NMR pulse sequence,and the efficient method of maximum-likelihood has been used to reconstruct the experimental output state.