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Quantum dot dephasing by edge states

Y. Levinson
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Abstract

We calculate the dephasing rate of an electron state in a pinched quantum dot, due to Coulomb interactions between the electron in the dot and electrons in a nearby voltage biased ballistic nanostructure. The dephasing is caused by nonequilibrium time fluctuations of the electron density in the nanostructure, which create random electric fields in the dot. As a result, the electron level in the dot fluctuates in time, and the coherent part of the resonant transmission through the dot is suppressed.

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Y. Levinson. 1999-07-04. Quantum dot dephasing by edge states. https://doi.org/10.1103/physrevb.61.4748

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