期刊
PHYSICAL REVIEW X
卷 10, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.10.031003
关键词
-
资金
- Center for Ultracold Atoms
- ARO MURI
- Vannevar Bush Faculty Fellowship Program
- DARPA DRINQS
- Moore Foundation [GBMF-4306]
- Samsung Fellowship
- Miller Institute for Basic Research in Science
- NSF [PHY-1506284]
- Japan Society for the Promotion of Science KAKENHI [26246001]
- EU (FP7, Horizons 2020, ERC)
- DFG
- SNSF
- BMBF
Quantum metrology is a powerful tool for explorations of fundamental physical phenomena and applications in material science and biochemical analysis. While in principle the sensitivity can be improved by increasing the density of sensing particles, in practice this improvement is severely hindered by interactions between them. Here, using a dense ensemble of interacting electronic spins in diamond, we demonstrate a novel approach to quantum metrology to surpass such limitations. It is based on a new method of robust quantum control, which allows us to simultaneously suppress the undesired effects associated with spin-spin interactions, disorder, and control imperfections, enabling a fivefold enhancement in coherence time compared to state-of-the-art control sequences. Combined with optimal spin state initialization and readout directions, this allows us to achieve an ac magnetic field sensitivity well beyond the previous limit imposed by interactions, opening a new regime of high-sensitivity solid-state ensemble magnetometers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据