Preparing Pseudo-Pure States in a Quadrupolar Spin System Using Optimal Control  

作　　者：TAN Yi-Peng NIE Xin-Fang LI Jun CHEN Hong-Wei ZHOU Xian-Yi PENG Xin-Hua DU Jiang-Feng 谭一鹏;聂新芳;李俊;陈宏伟;周先意;彭新华;杜江峰(Department of Modern Physics,University of Science and Technology of China,Hefei 230026;Hefei National Laboratory for Physical Sciences at Microscale,Hefei 230026;High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031)

机构地区：[1]Department of Modern Physics,University of Science and Technology of China,Hefei 230026 [2]Hefei National Laboratory for Physical Sciences at Microscale,Hefei 230026 [3]High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031

出　　处：《Chinese Physics Letters》2012年第12期204-207,共4页中国物理快报（英文版）

基　　金：Supported by the Chinese Academy of Sciences,and the National Natural Science Foundation of China under Grant Nos 10975124,10834005,91021005.

摘　　要：Pseudo-pure state(PPS)preparation is crucial in nuclear magnetic resonance quantum computation.There have been some methods in spin-1/2 systems and a few attempts in quadrupolar spin systems.As optimal control via gradient ascent pulses engineering(GRAPE)has been widely used in quantum information science,we apply this technique to PPS preparation in quadrupolar spin systems.This approach shows an effective and fast quantum control method for both the state preparation and the realization of quantum gates in quadrupolar systems.

关 键 词：computation. quantum POLAR 

分 类 号：O41[理学—理论物理]