Current Switch by Coherent Trapping of Electrons in Quantum Dots

Details Current Switch by Coherent Trapping of Electrons in Quantum Dots Current Switch by Coherent Trapping of Electrons in Quantum Dots

2000-09-15

arxiv.org/abs/cond-mat/0009229v1

Phys. Rev. Lett. 85, 4148 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.85.4148

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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