Current switch by coherent trapping of electrons in quantum dots

被引：65

作者：

Brandes, T

Renzoni, F

机构：

[1] Univ Hamburg, Inst Theoret Phys 1, D-20355 Hamburg, Germany

[2] Univ Hamburg, Inst Laserphys, D-20355 Hamburg, Germany

[3] Univ Manchester, Inst Sci & Technol, Dept Phys, Manchester M60 1QD, Lancs, England

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.85.4148

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a new transport mechanism through tunnel-coupled quantum dots based on the coherent population trapping effect. Coupling to an excited level by the coherent radiation of two microwaves can lead to an extremely narrow current antiresonance. The effect can be used to determine interdot dephasing rates and is a mechanism for a very sensitive, optically controlled current switch.

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页码：4148 / 4151

页数：4

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