通过光子晶体控制量子点自发发射的动力学
Peter Lodahl1, A Floris Van Driel, Ivan S Nikolaev
1Complex Photonic Systems (COPS), Department of Science and Technology and MESA Research Institute, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands. p.lodahl@utwente.nl
Nature
|August 6, 2004
概括
研究人员使用光子晶体控制了量子点的光辐射. 这一突破使光学量子系统的动态操纵成为可能,为先进的量子光学应用铺平了道路.
科学领域:
- 量子光学是一种量子光学.
- 材料科学 材料科学 材料科学
背景情况:
- 自发光辐射对于量子光学应用,如激光器和量子信息,至关重要.
- 需要量身定制的介电环境来操纵真空波动,控制自发发射.
研究的目的:
- 为了研究半导体量子点在逆光光子晶体内的自发发射.
- 为了证明光子晶体环境对光发射性能的控制.
主要方法:
- 将半导体量子点嵌入到反向的光子晶体中.
- 分析发射光的光谱分布和时间依赖的衰变.
- 与光子晶体的格子参数对应的辐射特性.
主要成果:
- 光子晶体显著控制量子点辐射的光谱分布和衰变速率.
- 在10%的带宽上观察到修改后的辐射,超过了微腔室的性能.
- 实现了抑制和增强的衰变速率,可通过格子参数调节.
结论:
- 逆光光子晶体为控制量子点自发发射提供了一个强大的平台.
- 这些发现支持开发光学量子系统的全固态动态控制.
- 这项研究为新的量子光学和光子设备应用开辟了道路.
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