Knowles Helena S, Kara Dhiren M, Atatüre Mete
Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
Phys Rev Lett. 2016 Sep 2;117(10):100802. doi: 10.1103/PhysRevLett.117.100802.
An obstacle for spin-based quantum sensors is magnetic noise due to proximal spins. However, a cluster of such spins can become an asset, if it can be controlled. Here, we polarize and readout a cluster of three nitrogen electron spins coupled to a single nitrogen-vacancy spin in diamond. We further achieve sub-nm localization of the cluster spins. Finally, we demonstrate coherent spin exchange between the species by simultaneous dressing of the nitrogen-vacancy and the nitrogen states. These results establish the feasibility of environment-assisted sensing and quantum simulations with diamond spins.
基于自旋的量子传感器面临的一个障碍是来自近端自旋的磁噪声。然而，如果能够对这样一群自旋进行控制，那么它们就可以成为一种优势。在这里，我们极化并读出了与金刚石中的单个氮空位自旋耦合的三个氮电子自旋的簇。我们还实现了簇自旋的亚纳米级定位。最后，我们通过同时对氮空位和氮态进行缀饰，证明了不同种类自旋之间的相干自旋交换。这些结果确立了利用金刚石自旋进行环境辅助传感和量子模拟的可行性。
