Current switch by coherent trapping of electrons in quantum dots

Authors
Brandes, T Renzoni, F
Citation
T. Brandes et F. Renzoni, Current switch by coherent trapping of electrons in quantum dots, PHYS REV L, 85(19), 2000, pp. 4148-4151
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
19
Year of publication
2000
Pages
4148 - 4151
Database
ISI
SICI code
0031-9007(20001106)85:19<4148:CSBCTO>2.0.ZU;2-Z
Abstract
We propose a new transport mechanism through tunnel-coupled quantum dots ba sed on the coherent population trapping effect. Coupling to an excited leve l by the coherent radiation of two microwaves can lead to an extremely narr ow current antiresonance. The effect can be used to determine interdot deph asing rates and is a mechanism for a very sensitive, optically controlled c urrent switch.