Simple theory of the measured current through quantum dots
Mesoscale and Nanoscale Physics
2013-05-29 v1
Abstract
A simple theory of the detected current I(t) flowing through charge qubits -- quantum dots -- is proposed in terms of standard continuous measurement theory. Applied to a double dot, our formalism easily confirms previous results on quantum Zeno effect, driven by growing ammeter performance gamma. Due to the transparent formalism, we can calculate the exact fluctuation spectrum S(omega) of the detected current, containing a significant Lorentzian peak near the Rabi frequency of the double dot.
Keywords
Cite
@article{arxiv.0707.2535,
title = {Simple theory of the measured current through quantum dots},
author = {Jozsef Zsolt Bernad and Andras Bodor and Lajos Diosi and Tamas Geszti},
journal= {arXiv preprint arXiv:0707.2535},
year = {2013}
}
Comments
4 pages, 2 figures