First experimental demonstration of an exact quantum search algorithm in nuclear magnetic resonance

• 作 者: LIU Yang ZHANG FeiHao
• 机 构: SchoolofNuclearScienceandEngineering,StateKeyLaboratoryo',fIntensePulsedRadiationSimulationandEff
• 出 处: 中国科学：物理学、力学、天文学英文版
• 发表日期: 2015年7期
• 关键词: 量子搜索算法 核磁共振系统 大型数据库 示范 目标状态 最优控制理论 实验实现 成功概率 quantum search algorithm improved
• 基金项目: This work was supported by the National Natural Science Foundation of China （Grant Nos. 11175094 and 91221205）, the National Basic Research Program of China （Grant No. 2011CB9216002）, and the Fund of

The success probability of searching an objective item from an unsorted database using standard Grover’s algorithm is usually not exactly 1. It is exactly 1 only when it is used to find the target state from a database with four items. Exact search is alw