新科学想法 › 学术文库 › 学术文献 › 浏览文献

Optical levitation of microdroplet containing a single quantum dot

zqyin 添加于 2014-9-14 09:01 | 1180 次阅读 | 0 个评论

作者
Minowa Y, Kawai R, Ashida M
摘要
Semiconductor nanocrystals, also known as quantum dots (QDs), are key ingredients in current quantum optics experiments. They serve as quantum emitters and memories and have tunable energy levels that depend not only on the material but also, through the quantum confinement effect, on the size. The resulting strongly confined electron and hole wave functions lead to large transition dipole moments, which opens a path to ultra strong coupling and even deep strong coupling between light and matter. Such efficient coupling requires the precise positioning of the QD in an optical cavity with a high quality factor and small mode volume, such as micro-Fabry--Perot cavity, whispering-gallery-mode microcavity, or photonic-crystal cavity. However, the absence of a technique for free-space positioning has limited the further research on QD-based cavity quantum electrodynamics. In this paper, we present a technique to overcome this challenge by demonstrating the optical levitation or trapping in helium gas of a single QD within a liquid droplet. Bright single-photon emission from the levitated QD was observed for more than 200 s. To the best of our best knowledge, this study provides the first proof-of-principle demonstration of an optically levitated solid-state quantum emitter.
详细资料
- 关键词: physics.optics
- 文献种类: Manual Script
- 期卷页: 2014年
- 日期: 2014-8-30
- 发布方式: arXiv e-prints
- 备注:arXiv:1409.0092v1; 17 pages, 4 figures
学科领域自然科学 » 物理学
相关链接 URL
zqyin 的文献笔记订阅