標題: 量子點輻射與微碟共振腔模態之耦合研究
Investigations of Couplings between Quantum Dot Emissions and Resonant Modes of Microdisk Microcavities
作者: 張文豪
CHANG WEN HAO
國立交通大學電子物理學系(所)
公開日期: 2011
摘要: 本計畫擬研究量子點輻射與微碟共振腔之細語迴廊模態耦合,並應用於 量子點量子光源之開發。主要研究方向包括:(1)以外加磁場調控單量子點與 微共振腔之耦合強度;(2)高品質因子微碟共振腔製作及量子點腔體-量子電 動力學;(3)第二型量子點與微共振腔耦合之載子動力學;(4)量子點與雙微 共振腔之耦合研究;(5) 微共振腔與光纖側向波導之耦合研究。首先,利用 電感式耦合電漿蝕刻技術及適當的製程改良,我們目標製作高品質因子 (>20000)之微碟共振腔,使其與單量子點的二能階系統達到強耦合。除了以 改變溫度來調控耦合強度外,本研究將利用磁場來改變量子點輻射波長, 使其與微碟共振腔模態產生共振。利用超快時間解析光激螢光光譜量測以 及時間解析激發相干量測,將可研究量子點在共振腔中的量子電動力學效 應,包括強耦合及弱耦合作用。此外,我們也將嘗試讓第二型量子點與共 振腔產生耦合,研究共振腔對第二型量子點載子動力學的影響。本計畫亦 目標製作雙微碟共振腔,使雙微碟模態因耦合而形成光子分子態。最後, 我們將發展以光纖側向波導耦合微碟共振模態的技術,達到共振激發量子 點的目標。側向光纖可牽引出共振腔的模態,而形成“飛行"量子位元, 進而使其傳遞於兩個腔體量子電動力學系統之間。
The proposal is devoted to the study of resonant couplings between quantum dot (QD) emissions and whispering-gallery modes of microdisk (MD) cavities for the development of QD-based quantum light sources. Proposed research topics are: (1) Using externally applied magnetic field to manipulate the coupling strength between QD emissions and the MD cavity modes; (2) Fabrication of MD cavities with high quality factors (Q factor) for the study of QD cavity-quantum electrodynamics (c-QED); (3) Carrier dynamics of type-II QDs in MD cavities; (4) Interactions of QD with coupled modes of double-disk cavities; (5) Lateral coupling of MD cavity emissions using fiber taper waveguides. In order to enter the strong coupling regime, we will use our inductively-coupled-plasma reactive-ion-etching (ICP-RIE) system and optimized recipes to fabricate high-Q MD cavities (Q>20,000). Apart from the conventional temperature tuning of QD-cavity coupling, we propose to use externally applied magnetic field to manipulate the emission energy of single QDs for matching resonant modes of MD cavities. By using the time-resolved photoluminescence and time-resolved excitation correlation measurements, the effects of c-QED in either the strong or the weak coupling regimes on the QD-cavity system will be comprehensively investigated. In addition to conventional InAs QDs, we will also incorporate type-II InAs/GaAsSb QDs in MD cavities to investigate the effects of cavity coupling on the carrier dynamics of type-II QDs. Finally, the technique of lateral coupling of cavity emissions by fiber taper waveguides will be developed, by which the cavity emission can be drawn out to act as a flying quantum bit transferring among different QD-cavity systems.
官方說明文件#: NSC99-2112-M009-008-MY2
URI: http://hdl.handle.net/11536/99123
https://www.grb.gov.tw/search/planDetail?id=2206860&docId=352202
Appears in Collections:Research Plans