Determining spatial structures of ion crystals by simulated annealing method  

作　　者：武文博 吴春旺 李剑 欧保全 谢艺 吴伟 陈平形 

机构地区：[1]College of Science,National University of Defense Technology,Changsha 410073,China [2]Interdisciplinary Center for Quantum Information,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Physics B》2017年第8期50-53,共4页中国物理B（英文版）

基　　金：supported by the National Basic Research Program of China(Grant No.2016YFA0301903);the National Natural Science Foundation of China(Grant Nos.11304387,11174370,61632021,61205108,and 11305262);the Research Plan Project of National University of Defense Technology(Grant No.ZK16-03-04)

摘　　要：Calculating the spatial structures of ion crystals is important in ion-trapped quantum computation. Here we demon- strate that the simulated annealing method is a powerful tool to evaluate the structures of ion crystals. By calculating equilibrium positions of 10 ions under harmonic potential and those of 120 ions under anharmonic potential, both with the standard procedure and simulated annealing method, we find that the standard procedure to evaluate spatial structures is complicated and may be inefficient in some cases, and that the simulated annealing method is more favorable.Calculating the spatial structures of ion crystals is important in ion-trapped quantum computation. Here we demon- strate that the simulated annealing method is a powerful tool to evaluate the structures of ion crystals. By calculating equilibrium positions of 10 ions under harmonic potential and those of 120 ions under anharmonic potential, both with the standard procedure and simulated annealing method, we find that the standard procedure to evaluate spatial structures is complicated and may be inefficient in some cases, and that the simulated annealing method is more favorable.

关 键 词：quantum information ion trap ion crystal equilibrium position 

分 类 号：O471.1[理学—半导体物理]