# All-electronic coherent population trapping in quantum dots

@article{Michaelis2005AllelectronicCP, title={All-electronic coherent population trapping in quantum dots}, author={Bj{\"o}rn Michaelis and Clive Emary and C. W. J. Beenakker}, journal={EPL}, year={2005}, volume={73}, pages={677-683} }

We present a fully electronic analogue of coherent population trapping in quantum optics, based on destructive interference of single-electron tunneling between three quantum dots. A large bias voltage plays the role of the laser illumination. The trapped state is a coherent superposition of the electronic charge in two of these quantum dots, so it is destabilized as a result of decoherence by coupling to external charges. The resulting current I through the device depends on the ratio of the… Expand

#### 77 Citations

Counting statistics of coherent population trapping in quantum dots

- Physics
- 2006

Destructive interference of single-electron tunneling between three quantum dots can trap an electron in a coherent superposition of charge on two of the dots. Coupling to external charges causes… Expand

Interference through quantum dots

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We discuss the effect of quantum interference on transport through a quantum dot (QD) system. We introduce an indirect coherent coupling parameter ?, which provides constructive/destructive… Expand

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All-electronic suppression of transport in a carbon nanotube originating from coherent population trapping is found and criteria for the presence of such a dark state is given. Expand

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We use a quantum master equation approach to study the transport properties of a triple quantum dot ring. Unlike double quantum dots and triple quantum dot chains, this geometry gives two transport… Expand

Triple quantum dots as charge rectifiers.

- Physics, Medicine
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The results show that triple dots in series can be designed to behave as quantum charge rectifiers and include phenomenologically a finite spin relaxation rate and calculate the current numerically. Expand

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We study electron transport through a triple quantum dot in ring or interferometer configuration. In particular, we analyze the influence of a gate voltage that detunes one of the dots, such that it… Expand

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Triple quantum dots present rich and interesting electron spin dynamics coming from the interplay of different coherent phenomena: coherent population trapping due to interference of the electron… Expand

Phonon-mediated decoherence in triple quantum dot interferometers

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We investigate decoherence in a triple quantum dot in ring configuration in which one dot is coupled to a damped phonon mode, while the other two dots are connected to source and drain, respectively.… Expand

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