Abstract
We present a systematic review of features due to resonant electron tunnelling, observablein transport spectroscopy experiments on quantum dots and single donors. The reviewcovers features attributable to intrinsic properties of the dot (orbital, spin and valleystates) as well as extrinsic effects (phonon/photon emission/absorption, features in thecharge reservoirs, coupling to nearby charge centres). We focus on the most commonoperating conditions, neglecting effects due to strong coupling to the leads. By discussingthe experimental signatures of each type of feature, we aim at providing practical methodsto distinguish between their different physical origins. The correct classification of theresonant tunnelling features is an essential requirement to understand the details of theconfining potential or to predict the performance of the dot for quantum informationprocessing.
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