Detection of the relaxation rates of an interacting quantum dot by a capacitively coupled sensor dot
Artikel i vetenskaplig tidskrift, 2014

We present a theoretical study of the detection of the decay time scales for a single-level quantum dot by means of a capacitively coupled sensor dot, which acts as an electrometer. We investigate the measurement back-action on the quantum-dot decay rates and elucidate its mechanism. We explicitly show that the setup can be used to measure the bare quantum-dot relaxation rates by choosing gate pulses that minimize the back-action. Interestingly, we find that besides the charge relaxation rate, also the rate associated to the fermion parity in the dot can be accessed with this setup. © 2014 American Physical Society.


Jens Schulenborg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Janine Splettstoesser

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

M. Governale

Victoria University of Wellington

L.D. Contreras-Pulido

JARA - Fundamentals of Future Information Technologies

Universität Ulm

RWTH Aachen University

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 89 19 195305- 195305


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