在Cu2O微空洞中的非线性瑞德伯格激子-极子.
Maxim Makhonin1, Anthonin Delphan2, Kok Wee Song3
1Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK. m.makhonin@sheffield.ac.uk.
Light, science & applications
|February 6, 2024
概括
我们使用Rydberg封锁在极子中展示了强大的光学非线性. 这种现象在氧化铜微振解器中观察到,增强了量子应用的光子对光子相互作用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子光学就是一个量子光学.
背景情况:
- 赖德伯格激子是具有很大的波尔半径的高度兴奋的电子孔状态.
- 刺激子相互作用和光合可以导致强烈的光学非线性,对传感和量子信息处理有用.
研究的目的:
- 在极子子系统中通过莱德伯格阻塞实现强效的光子对光子相互作用.
- 为了研究极子非线性与主要量子数的缩放.
主要方法:
- 使用一个 Cu2O 充满的微回振器,形成混合激子和光子 (极子).
- 采用脉冲共振激发和分析极子共振频率重新规范化.
- 应用理论分析来理解莱德伯格封锁的作用.
主要成果:
- 通过Rydberg封锁观察到强效的光子-光子相互作用 (Kerr类光学非线性).
- 证明了极子共振频率的重新规范化,这是由于光子-兴奋子合的减少以及兴奋子密度的增加.
- 实验验证了极子非线性系数的缩放为n4.4±1·8对于主要量子数直到n=7.
结论:
- 莱德伯格封锁对于在极子中实现高光学非线性至关重要.
- 在极子子系统中研究高主量子数对于量子光学应用至关重要.
- 这项工作为在固体中强烈相关的光子状态的基础研究开辟了道路.
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