Criterion for remote clock synchronization with Heisenberg-scaling accuracy
文献类型：期刊论文
| 作者 | Zhang, YL ; Zhang, YR ; Mu, LZ ; Fan, H |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:5 |
| ISSN号 | 1050-2947 |
| 通讯作者 | Zhang, YL (reprint author), Peking Univ, Sch Phys, Beijing 100871, Peoples R China. |
| 中文摘要 | We propose a quantum method to judge whether two spatially separated clocks have been synchronized within a specific accuracy sigma. If the measurement result of the experiment is clearly a nonzero value, the time difference between two clocks is smaller than sigma; otherwise, the difference is beyond sigma. Upon sharing the 2N-qubit bipartite maximally entangled state in this scheme, the accuracy of judgment can be enhanced to sigma similar to pi/[omega(N + 1)]. This criterion is consistent with Heisenberg scaling, which can be considered as the beating standard quantum limit; moreover, the unbiased estimation condition is not necessary. In particular, we demonstrate that this scheme is still feasible when suffering the loss of qubits. |
| 资助信息 | 973 Program [2010CB922904]; NSFC [11175248]; NFFTBS [J1030310, J1103205]; Chinese Academy of Sciences; Chun-Tsung scholar fund of Peking University |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56849]  |
| 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,Zhang, YR,Mu, LZ,et al. Criterion for remote clock synchronization with Heisenberg-scaling accuracy[J]. PHYSICAL REVIEW A,2013,88(5). |
| APA | Zhang, YL,Zhang, YR,Mu, LZ,&Fan, H.(2013).Criterion for remote clock synchronization with Heisenberg-scaling accuracy.PHYSICAL REVIEW A,88(5). |
| MLA | Zhang, YL,et al."Criterion for remote clock synchronization with Heisenberg-scaling accuracy".PHYSICAL REVIEW A 88.5(2013). |
入库方式： OAI收割
来源：物理研究所
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