Quantum Beats in Hybrid Metal-Semiconductor Nanostructures

被引：8

作者：

Dass, Chandriker Kavir ^{[1
]}

Jarvis, Thomas ^{[1
]}

Kunets, Vasyl P. ^{[2
]}

Mazur, Yuriy I. ^{[2
]}

Salamo, Gregory G. ^{[2
]}

Lienau, Christoph ^{[3
]}

Vasa, Parinda ^{[4
]}

Li, Xiaoqin ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[2] Univ Arkansas, Inst Nanosci & Engn, Fayetteville, AR 72701 USA

[3] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany

[4] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

来源：

ACS PHOTONICS | 2015年 / 2卷 / 09期

基金：

美国国家科学基金会;

关键词：

plasmonics; quantum well; hybrid nanostructure; ultrafast spectroscopy; quantum coherence; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; HEAVY-HOLE EXCITONS; SPONTANEOUS EMISSION; SPIN RELAXATION; WELLS; SURFACE; LIGHT; GAAS; DYNAMICS; OSCILLATIONS;

D O I：

10.1021/acsphotonics.5b00328

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate nonradiative quantum coherence in the presence of coupling between excitons and surface plasmon polaritons (SPPs) in a hybrid metal semiconductor nanostructure. In particular, we study how quantum coherence between heavy-hole (HH) and light-hole (LH) excitons in a GaAs quantum well (QW) is modified when they are coupled to SPPs of a gold grating. We find that the nonradative coherence is reduced in correlation with the coupling strength between the excitons and SPPs. Under the resonant coupling condition, the nonradiative coherence remains in the range of hundreds of femtoseconds, which is significantly longer than the plasmonic coherence. These experiments directly probe quantum critical information for exploring future quantum plasmonics applications. dynamics in a prototypical hybrid system and provide critical information for exploring future quantum plasmonics applications.

引用

页码：1341 / 1347

页数：7

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