摘要
简单地介绍了量子搜索算法中的相位匹配条件、改进的成功率为 10 0 %的量子搜索算法和量子搜索算法中的主要误差等 .
We briefly introduced some of our recent work related to the phase matching condition in quantum searching algorithms and the improved Grover algorithm. When one replaces the two phase inversions in the Grover algorithm with arbitrary phase rotations, the modified algorithm usually fails in searching the marked state unless a phase matching condition is satisfied between the two phases. The Grover algorithm is not 100% in success rate, an improved Grover algorithm with zero-failure rate is given by replacing the phase inversions with angles that depends on the size of the database. Other aspects of the Grover algorithm such as the SO(3) picture of quantum searching, the dominant gate imperfections in the Grover algorithm are also mentioned.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2004年第2期114-116,共3页
Nuclear Physics Review
基金
国家自然科学基金资助项目 ( 60 0 73 0 0 9)
国家重点基础研究规划资助项目 ( 0 0 1CB3 0 93 0 8)
教育部博士点基金资助项目~~
