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@ARTICLE{Fleitmann:909945,
author = {Fleitmann, Sarah and Hader, Fabian and Vogelbruch, Jan and
Humpohl, Simon and Hangleiter, Tobias and Meyer, Stefanie
and van Waasen, Stefan},
title = {{N}oise {R}eduction {M}ethods for {C}harge {S}tability
{D}iagrams of {D}ouble {Q}uantum {D}ots},
journal = {IEEE transactions on quantum engineering},
volume = {3},
issn = {2689-1808},
address = {New York, NY},
publisher = {IEEE},
reportid = {FZJ-2022-03539},
pages = {2689-1808},
year = {2022},
abstract = {Operating semiconductor quantum dots as quantum bits
requires isolating single electrons by adjusting gate
voltages. The transitions of electrons to and from the dots
appear as a honeycomb-like pattern in recorded charge
stability diagrams (CSDs). Thus, detecting the pattern is
essential to tune a double dot, but manual tuning is
seriously time-consuming. However, automation of this
process is difficult because the transitions’ contrast is
often low, and noise and background disorder potential
shifts disturb the CSDs. Therefore, the signal-to-noise
ratio needs to be increased to improve the detection of the
line pattern. For this purpose, we evaluate a representative
set of edge-preserving smoothing filters and compare them
both quantitatively and qualitatively by suitable metrics
and visual assessment. We generate artificial data to use
full-reference metrics for the evaluation procedure and to
optimize the filter parameters. Based on the results of this
article, the methods attain a moderate to good amount of
noise reduction and structure improvement dependent on the
different CSD qualities. In conclusion, we suggest
introducing the block-matching and three-dimensional
transform-domain filter into the automated tuning processing
pipeline. If the data are corrupted by significant amounts
of random telegraph noise, the bilateral filter and the
rolling guidance filter are also good choices.},
cin = {ZEA-2},
ddc = {621.3},
cid = {I:(DE-Juel1)ZEA-2-20090406},
pnm = {5223 - Quantum-Computer Control Systems and Cryoelectronics
(POF4-522)},
pid = {G:(DE-HGF)POF4-5223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001369115500050},
doi = {10.1109/TQE.2022.3165968},
url = {https://juser.fz-juelich.de/record/909945},
}