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来自钻石中的空中心的室温皮秒单光子发射

Hengming Li¹, Deniz Acil¹, Andrew M Boyce¹

¹Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, United States.

|May 15, 2025

概括

研究人员使用钻石缺陷中心创建了超快的单光子源. 通过将空位中心 (SiV-) 与超小腔相合,它们的寿命短至5.5 ps,从而提高了量子技术的潜力.

科学领域:

量子光学就是一个量子光学.
固态物理固态物理
材料科学是一种材料科学.

背景情况:

与光腔相结合的量子发射器是计算和钥匙分配等量子技术的关键.
钻石缺陷中心,特别是空缺中心 (SiV-),是有前途的量子发射器.
以前的限制包括长的自发发射寿命 (数百个皮秒),这是因为在钻石中创建小模式体积腔的挑战.

研究的目的:

设计钻石缺陷中心,用于超快单光子生成.
为了克服钻石基量子发射器自发发射寿命的局限性.
提高量子应用的空位中心 (SiV-) 的性能.

主要方法:

使用10nm钻石膜制造超小的模式-体积光学腔.
在钻石膜中植入负电荷的空隙中心 (SiV-).
SiV-中心与由金镜和纳米盘阵列组成的空腔相合.

主要成果:

实现的单光子寿命仅为5.5ps,Purcell因子的改善>700倍.
显示光发光的增强为4800倍.
在室温下获得高达361 Mcps的单光子生成速率.

结论:

开发的超小模式体积腔显著增强SiV-中心的辐射自发发射率.
这项工作表明了创造大规模,定制的单光子源的可行途径.
这些发现将钻石缺陷中心和其他固态平台定位为量子信息处理的强大竞争者.

关键词:

皮尔塞尔增强增强器的使用这是一种钻石膜.纳米空洞的纳米空洞纳米间隙腔 (nanogap) 的使用塑制剂的使用方法单光子光源是一个光子源.超快的寿命超快的寿命

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