对于已识别的可见单光子发射器的六角化的结构缺陷工程
Tsz Wing Tang1, Ritika Ritika2,3, Mohsen Tamtaji1,4
1Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR 999077, P. R. China.
ACS nano
|February 28, 2025
概括
研究人员通过控制碳度,对六角化 (hBN) 单光子发射器 (SPE) 中的碳缺陷进行了工程设计. 这种缺陷调整精确地控制了量子应用的hBN SPE排放.
科学领域:
- 材料科学 材料科学 材料科学
- 量子光学是一种量子光学.
- 两维材料是二维材料.
背景情况:
- 六角化 (hBN) 单光子发射器 (SPEs) 由于其可见范围的发射,对量子光学技术具有前景.
- 控制hBN中的碳缺陷结构以获得统一的带结构对于芯片上的量子设备集成至关重要,但仍然具有挑战性.
研究的目的:
- 通过工程碳缺陷结构来证明精确控制hBN SPE排放.
- 研究碳缺陷从CB转换为C2B-CN及其对光学性能的影响.
主要方法:
- 化学蒸汽沉积 (CVD) 工艺,在铜 (Cu) 基板中控制碳度 (%的0.00050.082).
- 密度函数理论 (DFT) 计算分析频段结构,振动模式和电子过渡.
- 对SPE排放进行光谱分析,重点关注零声波线 (ZPL) 转移.
主要成果:
- 成功设计了hBN中的碳缺陷,通过调节CVD期间的碳度,将CB转换为C2B-CN.
- 在SPEs的零声波线 (ZPL) 中从600610nm到630640nm实现了精确的转移.
- DFT结果证实了缺陷结构变化,带结构修改和观察到的光谱变化之间的相关性.
结论:
- 在hBN中证明了结构性缺陷工程,用于定制SPEs的排放特性.
- SPE辐射光谱可以作为指纹,用于识别碳点缺陷结构的变化.
- 这项工作突出了二维材料工程对于先进的芯片量子设备的潜力.
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