Room-temperature manipulation and decoherence of a single spin in diamond
Room-temperature manipulation and decoherence of a single spin in diamond
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DOI：
10.1103/physrevb.74.161203
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发表时间：
2006-10-01
影响因子：
3.7
通讯作者：
Awschalom, D. D.
中科院分区：
文献类型：
--
作者：
Hanson, R.;Gywat, O.;Awschalom, D. D.
本文报道了在室温下对金刚石中单个氮空位中心自旋的相干控制，并研究了它的相干性随磁场的变化。我们使用磁共振诱导拉比章动和应用哈恩自旋回波，以消除低频失相的影响。在磁场中，氮空位中心自旋通过磁偶极耦合共振耦合到置换氮自旋，观察到退相干率的急剧上升。最后，我们发现的证据表明，远离这些能量共振自旋翻转的氮电子的退相干的主要来源。
We report on room-temperature coherent manipulation of the spin of a single nitrogen-vacancy center in diamond and a study of its coherence as a function of magnetic field. We use magnetic resonance to induce Rabi nutations and apply a Hahn spin echo to remove the effect of low-frequency dephasing. A sharp rise in the decoherence rate is observed at magnetic fields where the nitrogen-vacancy center spin couples resonantly to substitutional nitrogen spins via the magnetic dipolar coupling. Finally, we find evidence that away from these energy resonances spin flips of nitrogen electrons are the main source of decoherence.