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arXiv 1202.5875cond-mat.mtrl-sci
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4 H-和6 H- SiC中硅空位的室温相干自旋取向

Room temperature coherent spin alignment of silicon vacancies in 4H- and 6H-SiC

Victor A. Soltamov, Alexandra A. Soltamova, Ivan I. Proskuryakov, Pavel G. Baranov

摘要:

报道了室温下碳化硅(SiC)中硅空位($V_{\mathrm{Si}}$)基态自旋子能级的光诱导反转布居的实现。结果表明,探测的硅空位自旋系综可以在自旋态的相干叠加中制备。拉比章动持续超过80 $μ$ s。两个相反的方案的光学对准之间的基态自旋子级的硅空位照射与非偏振光的人口实现在4 H-和6 H-SiC在室温下。这些共同使得SiC中的硅空位成为自旋电子学、量子信息处理和磁力测量的非常有利的缺陷。

英文摘要:

We report the realization of the optically induced inverse population of the ground-state spin sublevels of the silicon vacancies ($V_{\mathrm{Si}}$) in silicon carbide (SiC) at room temperature. The data show that the probed silicon vacancy spin ensemble can be prepared in a coherent superposition of the spin states. Rabi nutations persist for more than 80 $μ$s. Two opposite schemes of the optical alignment of the populations between the ground-state spin sublevels of the silicon vacancy upon illumination with unpolarized light are realized in 4H- and 6H-SiC at room temperature. These altogether make the silicon vacancy in SiC a very favorable defect for spintronics, quantum information processing, and magnetometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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