Experimental realization of highly efficient broadband coupling of single quantum dots to a photonic crystal waveguide

被引:272
|
作者
Lund-Hansen, T. [1 ]
Stobbe, S. [1 ]
Julsgaard, B. [1 ]
Thyrrestrup, H. [1 ]
Suenner, T. [2 ]
Kamp, M. [2 ]
Forchel, A. [2 ]
Lodahl, P. [1 ]
机构
[1] Tech Univ Denmark, Dept Photon Engn, DTU Foton, DK-2800 Lyngby, Denmark
[2] Univ Wurzburg, D-97074 Wurzburg, Germany
关键词
D O I
10.1103/PhysRevLett.101.113903
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present time-resolved spontaneous emission measurements of single quantum dots embedded in photonic crystal waveguides. Quantum dots that couple to a photonic crystal waveguide are found to decay up to 27 times faster than uncoupled quantum dots. From these measurements beta-factors of up to 0.89 are derived, and an unprecedented large bandwidth of 20 nm is demonstrated. This shows the promising potential of photonic crystal waveguides for efficient single-photon sources. The scaled frequency range over which the enhancement is observed is in excellent agreement with recent theoretical proposals taking into account that the light-matter coupling is strongly enhanced due to the significant slow-down of light in the photonic crystal waveguides.
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页数:4
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