Spontaneous emission of two quantum dots in a single-mode cavity

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	Spontaneous emission of two quantum dots in a single-mode cavity
	Qiu, L ; Zhang, K ; Li, ZY
刊名	CHINESE PHYSICS B
	2013
卷号	22 期号:9
关键词	spontaneous emission quantum dot single-mode cavity
ISSN号	1674-1056
通讯作者	Li, ZY (reprint author), Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100190, Peoples R China.
中文摘要	The spontaneous emission spectrum from two quantum dots (QDs) that are strongly coupled with a single-mode nanocavity is investigated using rigorous numerical calculations and simple analytical solutions of quantum dynamics. The emission spectra both from the side and along the axis of the cavity are considered. Modification of two parameters, the coupling strength and the detuning between the transition frequencies of the two quantum dots, allows us to efficiently control the shape of the spontaneous emission spectrum. Different profiles and their physical origins can be well understood in the dressed-state picture for the light-QD interaction in the on-resonance and off-resonance situations. In the on-resonance situation, the emission spectra exhibit symmetric features, and they are not altered by the asymmetry in the coupling parameters. The axis spectra show two emission peaks while the side spectra have three emission peaks. In the off-resonance situation, the emission spectra always show an asymmetrical three-peak feature. When the two QDs have different decay parameters, singular features (a peak or a dip) can take place at the frequency of the cavity mode, and this is attributed to the unbalanced process of the emission and absorption of a single photon.
资助信息	National Basic Research Foundation of China [2011CB922002]
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57466]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Qiu, L,Zhang, K,Li, ZY. Spontaneous emission of two quantum dots in a single-mode cavity[J]. CHINESE PHYSICS B,2013,22(9).
APA	Qiu, L,Zhang, K,&Li, ZY.(2013).Spontaneous emission of two quantum dots in a single-mode cavity.CHINESE PHYSICS B,22(9).
MLA	Qiu, L,et al."Spontaneous emission of two quantum dots in a single-mode cavity".CHINESE PHYSICS B 22.9(2013).