Spectral line narrowing via spontaneously generated coherence in quantum dot molecules

被引：21

作者：

Tian, Si-Cong ^{[1
]}

Tong, Cun-Zhu ^{[1
]}

Wang, Chun-Liang ^{[2
]}

Wang, Li-Jie ^{[1
]}

Wu, Hao ^{[1
]}

Xing, En-Bo ^{[1
]}

Ning, Yong-Qiang ^{[1
]}

Wang, Li-Jun ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Peoples R China

[2] Northeast Normal Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2014年 / 312卷

基金：

中国国家自然科学基金;

关键词：

Spontaneously generated coherence; Quantum dot molecule; Fluorescence spectrum; Linewidth narrowing; SPONTANEOUS EMISSION; ABSORPTION PROPERTIES; INDUCED TRANSPARENCY; OPTICAL CONTROL; INTERFERENCE; SYSTEM; STATES;

D O I：

10.1016/j.optcom.2013.09.059

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically demonstrate that it is possible to simulate spontaneously generated coherence in an asymmetric double quantum dot system, a quantum dot molecule. With the tunneling coupling, the system emulates to large degree a three level system with quantum interference and the fluorescence spectrum can display ultranarrow lines. In our system the coupling field is not necessary and the degree of quantum interference can be controlled. The dressed states for this system are identified, and the spectral features are interpreted in terms of transitions among these dressed states. The system studied here is more practical and can permit the observation of spontaneously generated coherence without the need for closely lying levels and parallel dipole moments. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：296 / 301

页数：6

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