Neutral Silicon-Vacancy Center in Diamond: Spin Polarization and Lifetimes.
Neutral Silicon-Vacancy Center in Diamond: Spin Polarization and Lifetimes.
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金刚石中的中性硅空位中心：自旋极化和寿命。
DOI：
10.1103/physrevlett.119.096402
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发表时间：
2017
影响因子：
8.6
通讯作者：
Green BL
中科院分区：
文献类型：
--
作者：
Green BL
我们证明了金刚石()中中性带电的硅空位缺陷的光学自旋极化，该缺陷在946 nm处发射一条零声子线。在共振激发下，自旋极化效率最高，但在低于共振能量时，自旋极化效率不为零。我们测量了低温下的系综自旋相干时间和自旋弛豫极限。在946 nm附近的光学自旋态初始化允许在相同的光寻址体积内独立地初始化，并且在电信下转换波段内发射到1550 nm：当与其高的德拜-沃勒因子相结合时，我们的初步结果表明它是一个很有前途的远程量子通信技术的候选者。
We demonstrate optical spin polarization of the neutrally charged silicon-vacancy defect in diamond (), andefect which emits with a zero-phonon line at 946 nm. The spin polarization is found to be most efficient under resonant excitation, but nonzero at below-resonant energies. We measure an ensemble spin coherence timeat low-temperature, and a spin relaxation limit of. Optical spin-state initialization around 946 nm allows independent initialization ofandwithin the same optically addressed volume, andemits within the telecoms down-conversion band to 1550 nm: when combined with its high Debye-Waller factor, our initial results suggest thatis a promising candidate for a long-range quantum communication technology.