Spontaneous emission interference in negative-refractive-index waveguides

被引：54
|
作者：
Li, Gao-xiang [1 ,2 ]
Evers, Joerg [1 ]
Keitel, Christoph H. [1 ]
机构：
[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[2] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China
来源：
PHYSICAL REVIEW B | 2009年 / 80卷 / 04期
基金：
中国国家自然科学基金;
关键词：
TRANSPARENCY; METAMATERIAL;
D O I：
10.1103/PhysRevB.80.045102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The spontaneous decay of a V-type three-level atom placed in a negative-refractive-index waveguide is analyzed. We find that in thin waveguides, highly efficient surface-guided modes are supported, which do not occur in positive-index waveguides. In addition, at low absorption, the mode density and thus spontaneous emission into particular regular-guided modes is enhanced by several orders of magnitude as compared to regular dielectric waveguides. The asymmetries between emission into the different modes and the enhancement of particular guided modes allow us to induce strong spontaneous emission interference between transitions with orthogonal transition dipole moments.
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页数：7
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