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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 11期

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.

引用

页数：4

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