Study on energy-level fluctuation of two-level system in semiconductor nanostructures
| Project/Area Number |
24310084
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Nanostructural science
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
KUMANO HIDEKAZU 北海道大学, 電子科学研究所, 准教授 (70292042)
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2013: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2012: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
|
|---|
| Keywords | 量子ドット / 量子情報 / 量子光源 / 荷電状態制御 / 光子相関測定 / キャリアダイナミクス / 単一光子光源 / 半導体ナノ構造 / 単一量子ドット / 励起子 / 荷電状態 / 光子相関 / コヒーレンス |
|---|
| Outline of Final Research Achievements |
I have fabricated single photon sources with a single InAs quantum dot (QD), and its carrier dynamics were investigated. Originally introduced metal microcolumnar structure have enhanced the photon extraction efficiency up to 18 % from conventionally obtained 1% with planar structure.
Charge states formed in the QD were modeled with 5-level system, and by comparing simulated time-evolution of the population with experimentally obtained correlation functions, I have successfully reproduced the carrier dynamics. This finding is crucial for controlling the carrier dynamics characterizing quantum photon sources.
|
Report
(4 results)
Research Products
(20 results)
