The influence of non-Gaussian noise on the accuracy of parameter estimation

被引:4
|
作者
Li, Xue-Lian [1 ]
Li, Jun-Gang [1 ]
Wang, Yuan-Mei [1 ]
机构
[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
Non-Gaussian noise; Quantum Fisher information; Parameter estimation; QUANTUM-ENHANCED METROLOGY; LIMIT; STATES; ENTANGLEMENT; CHANNELS;
D O I
10.1016/j.physleta.2016.10.050
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We analyze the influence of non-Gaussian noise on the accuracy of the parameter estimation. Specially, we estimate the intensity of magnetic field by adopting a spin-1/2 system which is influenced by random telegraph noise and colored noise with 1/f(alpha) spectrum. We find that, for the random telegraph noise case, both weak coupling and strong coupling conditions are suitable for the parameter estimation. For the colored noise case, the accuracy of the parameter estimation decreases with the parameter a firstly and then increases with it. We also give physical explanations for these phenomena. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:216 / 220
页数:5
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