Dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor

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.

13 pages, 5 figures, to be published in Journal of Physics A

References in corpus (2)

• Electron transport through Aharonov-Bohm interferometer with laterally coupled double quantum dots
• Interference through quantum dots

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• Magnetotransport in Aharonov Bohm interferometers: Exact numerical simulations
• Exotic electron states and tunable magneto-transport in a fractal Aharonov-Bohm interferometer
• Backaction Dephasing by a Quantum Dot Detector