All-Optical Control of the Silicon-Vacancy Spin in Diamond at Millikelvin Temperatures
All-Optical Control of the Silicon-Vacancy Spin in Diamond at Millikelvin Temperatures
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毫开尔文温度下金刚石中硅空位自旋的全光学控制
DOI：
10.1103/physrevlett.120.053603
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发表时间：
2018-01-30
影响因子：
8.6
通讯作者：
Becher, Christoph
中科院分区：
文献类型：
--
作者：
Becker, Jonas N.;Pingault, Benjamin;Becher, Christoph
金刚石中的硅空位中心由于其良好的光学性质和光学可寻址的电子自旋，在量子光子学中提供了有吸引力的机会。在这里，我们将两者联合收割机结合起来，实现了对其自旋态的全光相干控制。我们利用这种方法来探索自旋退相的影响，在一个杂质丰富的样品超出了声子诱导的退相干的限制：采用拉姆齐和Hahnecho技术在温度下降到40 mK，我们确定共振耦合到取代氮自旋浴作为限制退相干源的电子自旋。
The silicon-vacancy center in diamond offers attractive opportunities in quantum photonics due to its favorable optical properties and optically addressable electronic spin. Here, we combine both to achieve all-optical coherent control of its spin states. We utilize this method to explore spin dephasing effects in an impurity-rich sample beyond the limit of phonon-induced decoherence: Employing Ramsey and Hahnecho techniques at temperatures down to 40 mK we identify resonant coupling to a substitutional nitrogen spin bath as limiting decoherence source for the electron spin.