Three-dimensional optical manipulation of a single electron spin
Three-dimensional optical manipulation of a single electron spin
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DOI：
10.1038/nnano.2012.259
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发表时间：
2013-03-01
影响因子：
38.3
通讯作者：
Quidant, Romain
中科院分区：
文献类型：
--
作者：
Geiselmann, Michael;Juan, Mathieu L.;Quidant, Romain
金刚石中的氮空位（NV）中心是用于量子光学（1，2）、基于自旋的量子信息处理（3，4）和高分辨率传感（5-11）的有前景的元素块。然而，充分利用这些NV中心的能力需要适当的策略来准确地操纵它们。在这里，我们使用光镊（12）作为工具，以实现对单个NV自旋的单个纳米金刚石的确定性捕获和三维空间操纵。值得注意的是，我们发现，NV轴几乎是固定的陷阱内，并可以控制在原位通过调整捕获光的偏振。通过将这种独特的空间和角度控制与NV自旋和荧光寿命测量的相干操作相结合，我们证明了单个光学捕获NV中心作为三维矢量磁力测量和光学状态局部密度传感的新途径。
Nitrogen vacancy (NV) centres in diamond are promising elemental blocks for quantum optics(1,2), spin-based quantum information processing(3,4) and high-resolution sensing(5-11). However, fully exploiting the capabilities of these NV centres requires suitable strategies to accurately manipulate them. Here, we use optical tweezers(12) as a tool to achieve deterministic trapping and three-dimensional spatial manipulation of individual nanodiamonds hosting a single NV spin. Remarkably, we find that the NV axis is nearly fixed inside the trap and can be controlled in situ by adjusting the polarization of the trapping light. By combining this unique spatial and angular control with coherent manipulation of the NV spin and fluorescence lifetime measurements near an integrated photonic system, we demonstrate individual optically trapped NV centres as a novel route for both three-dimensional vectorial magnetometry and sensing of the local density of optical states.