Study on Electron-photon Quantum-state Conversion in Quantum Dots Embedded in Meta Microcavities

超微腔中嵌入量子点的电子-光子量子态转换研究

• 批准号: 21246048
• 负责人: SUEMUNE Ikuo
• 金额: $ 28.12万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21246048/
• 关键词: 量子ドット; 金属埋め込み; 単一光子; 光子相関測定; 半導体量子ドット; 単一光子光源; 2次相関関数; 荷電励起子; オンデマンド; FDTD

We have prososed and fabricated metal-embedded GaAs pillars with InAs quantum dots inside. Initially titanium was used for the fabrication of the metal-embedded structure and the photon extraction efficiency to couple to lens (NA=0.4) of 8% was observed. Later metal was changed to silver and the much higher efficiency of 18% was achieved. The single photon generation purity can be examined with the second-order photon correlation function g(2)(0), and the world-record level 0.02 was observed under non-resonant excitation and the lower value of 0.007 was observed under quasi-resonant excitation.

我们已经提出并制作了金属嵌入GaAs柱与InAs量子点内。最初，钛用于制造金属嵌入结构，并且观察到耦合到透镜（NA=0.4）的光子提取效率为8%。后来的金属被改为银，并实现了18%的高得多的效率。用二阶光子相关函数g（2）（0）检验单光子产生纯度，在非共振激发下达到世界最高水平0.02，在准共振激发下达到较低水平0.007。

项目成果

Size Control of Tapered Cones for High Density Quantum Dots as 1.55μm Emitters

作为 1.55μm 发射器的高密度量子点锥形锥体的尺寸控制

• 发表时间: 2011
• 作者: J.-H.Huh;C.Hemannstadter;K.Akahane;N.A Jahan;H.Sasakura;H.Sasaki;I.Suemune
• 通讯作者: I.Suemune

Semiconductor Quantum Dots in Metallic Nanostructures

金属纳米结构中的半导体量子点

• 发表时间: 2009
• 作者: I.Suemune;Y.Idutsu;M.Takada;D.Kato;S.Ida;J.-H.Huh;H.Sasakura;H.Kumano
• 通讯作者: H.Kumano

Position controlled nanowires for infrared single photon emission

• DOI: 10.1063/1.3506499
• 发表时间: 2010-10-25
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Dorenbos, S. N.;Sasakura, H.;Suemune, I.
• 通讯作者: Suemune, I.

ObservationofEnhancedLuminescence Emitted from InAs Quantum Dots with Direct Contact to Superconducting Niobium Stripe

直接接触超导铌带的 InAs 量子点发射增强发光的观察

• 发表时间: 2008
• 作者: M.Takada,Y.Idutsu,Y.Hayashi,T.Akazaki,H.Sasakura;H.Kumano,I.Suemune
• 通讯作者: H.Kumano,I.Suemune

Transformation from InAs Quantum Dots to Disks for Reduced Exction-State Splitting

从 InAs 量子点到盘的转变以减少激发态分裂

• 发表时间: 2011
• 作者: S. Sakurai;S. Odashima;H. Iijima;and I.Suemune
• 通讯作者: and I.Suemune