Fitting magnetic field gradient with Heisenberg-scaling accuracy
文献类型：期刊论文
| 作者 | Zhang, YL ; Wang, H ; Jing, L ; Mu, LZ ; Fan, H |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2014 |
| 卷号 | 4 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Fan, H (reprint author), Peking Univ, Sch Phys, Beijing 100871, Peoples R China. |
| 中文摘要 | The linear function is possibly the simplest and the most used relation appearing in various areas of our world. A linear relation can be generally determined by the least square linear fitting (LSLF) method using several measured quantities depending on variables. This happens for such as detecting the gradient of a magnetic field. Here, we propose a quantum fitting scheme to estimate the magnetic field gradient with N-atom spins preparing in Wstate. Our scheme combines the quantum multi-parameter estimation and the least square linear fitting method to achieve the quantum Cramer-Rao bound (QCRB). We show that the estimated quantity achieves the Heisenberg-scaling accuracy. Our scheme of quantum metrology combined with data fitting provides a new method in fast high precision measurements. |
| 资助信息 | 973 Program [2010CB922904]; NFFTBS [J1103205, J1030310]; NSFC [11175248]; Chinese Academy of Sciences; Peking University |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59675]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, YL,Wang, H,Jing, L,et al. Fitting magnetic field gradient with Heisenberg-scaling accuracy[J]. SCIENTIFIC REPORTS,2014,4. |
| APA | Zhang, YL,Wang, H,Jing, L,Mu, LZ,&Fan, H.(2014).Fitting magnetic field gradient with Heisenberg-scaling accuracy.SCIENTIFIC REPORTS,4. |
| MLA | Zhang, YL,et al."Fitting magnetic field gradient with Heisenberg-scaling accuracy".SCIENTIFIC REPORTS 4(2014). |
入库方式： OAI收割
来源：物理研究所
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