Detection of the relaxation rates of an interacting quantum dot by a capacitively coupled sensor dot
Journal article, 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.

Author

Jens Schulenborg

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Janine Splettstoesser

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

M. Governale

Victoria University of Wellington

L.D. Contreras-Pulido

JARA - Fundamentals of Future Information Technologies

University of Ulm

RWTH Aachen University

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 89 19 195305- 195305

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Condensed Matter Physics

DOI

10.1103/PhysRevB.89.195305

More information

Latest update

9/6/2018 1