Dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor
Mesoscale and Nanoscale Physics
2015-05-19 v1 Quantum Physics
Abstract
We theoretically investigated the dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor. We employed the interpolative 2nd-order perturbation theory to include the charge sensing Coulomb interaction. It is shown that the visibility of the Aharonov-Bohm oscillation of the linear conductance decreases monotonically as the sensing Coulomb interaction increases. In particular, for a weak sensing interaction regime, the visibility decreases parabolically, and it behaves linearly for a strong sensing interaction regime.
Cite
@article{arxiv.1005.2226,
title = {Dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor},
author = {T. Kubo and Y. Tokura and S. Tarucha},
journal= {arXiv preprint arXiv:1005.2226},
year = {2015}
}
Comments
13 pages, 5 figures, to be published in Journal of Physics A