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@ARTICLE{Hader:1005435,
author = {Hader, Fabian and Vogelbruch, Jan and Humpohl, Simon and
Hangleiter, Tobias and Eguzo, Chimezie and Heinen, Stefan
and Meyer, Stefanie and van Waasen, Stefan},
title = {{O}n {N}oise-{S}ensitive {A}utomatic {T}uning of
{G}ate-{D}efined {S}ensor {D}ots},
journal = {IEEE transactions on quantum engineering},
volume = {4},
issn = {2689-1808},
address = {New York, NY},
publisher = {IEEE},
reportid = {FZJ-2023-01472},
pages = {5500218},
year = {2023},
abstract = {In gate-defined quantum dot systems, the conductance change
of electrostatically coupled sensor dots allows the
observation of the quantum dots' charge and spin states.
Therefore, the sensor dots must be optimally sensitive to
changes in its electrostatic environment. A series of
conductance measurements varying the two sensor-dot-forming
barrier gate voltages serve to tune the dot into a
corresponding operating regime. In this paper, we analyze
the noise characteristics of the measured data and define a
criterion to identify continuous regions with a sufficient
signal-gradient-to-noise ratio. Hence, accurate noise
estimation is required when identifying the optimal
operating regime. Therefore, we evaluate several existing
noise estimators, modify them for 1D data, optimize their
parameters, and analyze their quality based on simulated
data. The estimator of Chen et al. [1] turns out to be best
suited for our application concerning minimally scattering
results. Furthermore, using this estimator in an algorithm
for flank-of-interest classification in measured data shows
the relevance and applicability of our approach.},
cin = {ZEA-2 / PGI-11},
ddc = {621.3},
cid = {I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)PGI-11-20170113},
pnm = {5223 - Quantum-Computer Control Systems and Cryoelectronics
(POF4-522) / 5221 - Advanced Solid-State Qubits and Qubit
Systems (POF4-522)},
pid = {G:(DE-HGF)POF4-5223 / G:(DE-HGF)POF4-5221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001363356900001},
doi = {10.1109/TQE.2023.3255743},
url = {https://juser.fz-juelich.de/record/1005435},
}