Single artificial atom photonic crystal nanocavity laser

单人造原子光子晶体纳米腔激光器

• 批准号: 20760030
• 负责人: NOMURA Masahiro
• 金额: $ 2.75万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760030/
• 关键词: フォトニック結晶; 単一量子ドット; レーザ; ナノ共振器

The objective of research is the first demonstration of single semiconductor quantum dot laser using a high quality two-dimensional photonic crystal nanocavity with air-bridge structure.We have succeeded in the demonstration for the first time. This single quantum dot laser can be called as a single artificial atom laser, because a quantum dot is an artificial atom. Vacuum Rabi splitting, which is a spectral splitting in photoluminescence spectrum, can be observed when an exciton in a single quantum dot interacts with single photon in a nanocavity. There was no report on lasing in such a strongly coupled system in solid-state material. We have achieved lasing in this strongly coupled system for the first time. Moreover, the vacuum Rabi splitting is sustained at the laser threshold, which indicates that coexistence of reversible and irreversible physical processes at the same time.This achievement can be said as one of the important mile stones in the field of semiconductor lasers. Therefore, this article was published by Nature Physics, which has a very high impact factor, and was reported by several newspapers. The transition from the strong-coupling to lasing regime occurs with single-quantum-level. Therefore, this is the first step towards solid-state cavity quantum electric experiments with large number of quanta.

本课题的研究目标是首次利用空气桥结构的高质量二维光子晶体纳米腔实现半导体单量子点激光器的演示，并首次获得成功。这种单个量子点激光器可以被称为单个人造原子激光器，因为量子点就是人造原子。真空拉比分裂是光致发光光谱中的一种光谱分裂，当单个量子点中的激子与纳米腔中的单光子相互作用时，可以观察到真空拉比分裂。还没有关于固体材料中如此强耦合系统中的激光的报道。我们首次在这个强耦合系统中实现了激光。此外，真空拉比分裂被维持在激光阈值，这表明可逆和不可逆的物理过程同时存在，这一成果可以说是半导体激光器领域的重要里程碑之一。因此，这篇文章被影响因子很高的《自然物理》发表，并被多家报纸报道。从强耦合到激光的转变发生在单量子能级。因此，这是迈向大量量子的固态腔量子电学实验的第一步。

项目成果

High-Q design of semiconductor-based ultrasmall photonic crystal nanocavity

• DOI: 10.1364/oe.18.008144
• 发表时间: 2010-04-12
• 期刊: OPTICS EXPRESS
• 影响因子: 3.8
• 作者: Nomura, Masahiro;Tanabe, Katsuaki;Arakawa, Yasuhiko
• 通讯作者: Arakawa, Yasuhiko

Observation of unique photon statistics of single artificial atom laser

单人造原子激光器独特光子统计观测

• 发表时间: 2009
• 期刊: Physica E
• 影响因子: 3.3
• 作者: M. Nomura;N. Kumagai;S. Iwamoto;Y. Ota;Y. Arakawa
• 通讯作者: Y. Arakawa

Single Quantum Dot Laser with Photonic Crystal Nanocavity

具有光子晶体纳米腔的单量子点激光器

• 发表时间: 2009
• 作者: M. Nomura (Invited);S. Iwamoto;Y. Arakawa
• 通讯作者: Y. Arakawa

高Q値H0型フォトニック結晶ナノ共振器の設計

高Q值H0型光子晶体纳米腔设计

• 发表时间: 2010
• 作者: 野村政宏;田辺克明;岩本敏;荒川泰彦
• 通讯作者: 荒川泰彦

単一量子ドット-フォトニック結晶ナノ共振器レーザ ～単一人工原子レーザの実現～

单量子点-光子晶体纳米腔激光器~单人造原子激光器的实现~

• 发表时间: 2009
• 作者: 野村政宏;熊谷直人;岩本敏;太田泰友;荒川泰彦
• 通讯作者: 荒川泰彦