Spontaneous emission control of single quantum dots by electromechanical tuning of a photonic crystal cavity

被引：29
|
作者：
Midolo, L. [1 ]
Pagliano, F. [1 ]
Hoang, T. B. [1 ]
Xia, T. [1 ]
van Otten, F. W. M. [1 ]
Li, L. H. [2 ]
Linfield, E. H. [2 ]
Lermer, M. [3 ]
Hoefling, S. [3 ]
Fiore, A. [1 ]
机构：
[1] Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands
[2] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
[3] Univ Wurzburg, Tech Phys & Wilhelm Conrad Rontgen Res Ctr Comple, D-97074 Wurzburg, Germany
来源：
APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 09期
基金：
英国工程与自然科学研究理事会;
关键词：
NANOCAVITY;
D O I：
10.1063/1.4748302
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate the control of the spontaneous emission rate of single InAs quantum dots embedded in a double-membrane photonic crystal cavity by the electromechanical tuning of the cavity resonance. Controlling the separation between the two membranes with an electrostatic field, we obtain the real-time spectral alignment of the cavity mode to the excitonic line and we observe an enhancement of the spontaneous emission rate at resonance. The cavity has been tuned over 13 nm without shifting the exciton energies. A spontaneous emission enhancement of approximate to 4.5 has been achieved with a coupling efficiency of the dot to the mode beta approximate to 92%. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4748302]
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页数：4
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