Identification and Control of Electron-Nuclear Spin Defects in Diamond
Identification and Control of Electron-Nuclear Spin Defects in Diamond
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DOI：
10.1103/physrevlett.124.083602
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发表时间：
2020-02-25
影响因子：
8.6
通讯作者：
Cappellaro, Paola
中科院分区：
文献类型：
--
作者：
Cooper, Alexandre;Sun, Won Kyu Calvin;Cappellaro, Paola
我们通过实验证明了一种在量子探针环境中利用自旋缺陷来放大量子器件的方法。我们遵循这种方法来识别，定位和控制两个电子核自旋缺陷的环境中的一个单一的氮空位中心的金刚石。通过在磁场的不同方向上进行光谱分析，我们提取了超精细和偶极相互作用张量的未知参数，我们使用这些参数来定位两个自旋缺陷，并设计控制序列来初始化、操纵和读出它们的量子态。最后，我们在三个电子自旋之间建立了量子相干性，为建立真正的三重纠缠铺平了道路。这种方法将有助于组装多自旋量子寄存器，用于量子传感和量子信息处理。
We experimentally demonstrate an approach to scale up quantum devices by harnessing spin defects in the environment of a quantum probe. We follow this approach to identify, locate, and control two electron-nuclear spin defects in the environment of a single nitrogen-vacancy center in diamond. By performing spectroscopy at various orientations of the magnetic field, we extract the unknown parameters of the hyperfine and dipolar interaction tensors, which we use to locate the two spin defects and design control sequences to initialize, manipulate, and readout their quantum state. Finally, we create quantum coherence among the three electron spins, paving the way for the creation of genuine tripartite entanglement. This approach will be useful in assembling multispin quantum registers for applications in quantum sensing and quantum information processing.