Dephasing in a quantum dot due to coupling with a quantum point contact

Details Dephasing in a quantum dot due to coupling with a quantum point contact Dephasing in a quantum dot due to coupling with a quantum point contact

1997-02-18

arxiv.org/abs/cond-mat/9702164v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, no figures, Europhysics Letters style

Scientific paper

10.1209/epl/i1997-00351-x

We consider the dephasing of an one-electron state in a quantum dot due to
charge fluctuations in a biased quantum point contact coupled to the dot
capacitively. The contribution to the dephasing rate due to the bias depends on
temperature and bias in the same way as shot-noise in the point contact at zero
frequency, but do not follow the |t|^2(1-|t|^2) suppression.

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