2012 Fiscal Year Final Research Report
Development of simple single photon source and its application to quantum state manipulation
| Project/Area Number |
22340113
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KUGA Takahiro 東京大学, 大学院・総合文化研究科, 教授 (60195419)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 単一光子源 / 半導体ナノ粒子 / 1粒子計測 / 量子情報処理 / 量子暗号 / アンチバンチング / ナノファイバー / ポリマー薄膜 |
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| Research Abstract |
We constituted a much more simple and inexpensive single photon source than conventional ones. Semiconductor nanoparticles are embedded in a thin film of polymer and one of those particles are illuminated by a laser radiation. Because of the quantum confinement effect in nanoparticles, a single nanoparticle cannot emit multiple photons at one time, i.e. this system can work as a single photon source. We have obtained more than 10 thousand photons per second in a single mode fiber and confirmed the antibunching property, which is the clear evidence for a single photon source.
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