中国物理B ›› 2017, Vol. 26 ›› Issue (8): 80303-080303.doi: 10.1088/1674-1056/26/8/080303

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Determining spatial structures of ion crystals by simulated annealing method

Wen-Bo Wu(武文博), Chun-Wang Wu(吴春旺), Jian Li(李剑), Bao-Quan Ou(欧保全), Yi Xie(谢艺), Wei Wu(吴伟), Ping-Xing Chen(陈平形)   

  1. 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
  • 收稿日期:2017-03-31 修回日期:2017-05-02 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: Wei Wu, Ping-Xing Chen E-mail:weiwu@nudt.edu.cn;pxchen@nudt.edu.cn
  • 基金资助:

    Project 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), and the Research Plan Project of National University of Defense Technology (Grant No. ZK16-03-04).

Determining spatial structures of ion crystals by simulated annealing method

Wen-Bo Wu(武文博)1,2, Chun-Wang Wu(吴春旺)1,2, Jian Li(李剑)1,2, Bao-Quan Ou(欧保全)1,2, Yi Xie(谢艺)1,2, Wei Wu(吴伟)1,2, Ping-Xing Chen(陈平形)1,2   

  1. 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
  • Received:2017-03-31 Revised:2017-05-02 Online:2017-08-05 Published:2017-08-05
  • Contact: Wei Wu, Ping-Xing Chen E-mail:weiwu@nudt.edu.cn;pxchen@nudt.edu.cn
  • About author:0.1088/1674-1056/26/8/
  • Supported by:

    Project 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), and the Research Plan Project of National University of Defense Technology (Grant No. ZK16-03-04).

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摘要：

Calculating the spatial structures of ion crystals is important in ion-trapped quantum computation. Here we demonstrate 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

Abstract:

Calculating the spatial structures of ion crystals is important in ion-trapped quantum computation. Here we demonstrate 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.

Key words: quantum information, ion trap, ion crystal, equilibrium position

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
37.10.Ty (Ion trapping) 64.60.F- (Equilibrium properties near critical points, critical exponents)