Learning Coulomb diamonds in large quantum dot arrays
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Learning Coulomb diamonds in large quantum dot arrays. / Krause, Oswin; Chatterjee, Anasua; Kuemmeth, Ferdinand; van Nieuwenburg, Evert.
In: SciPost Physics, Vol. 13, No. 4, 084, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Learning Coulomb diamonds in large quantum dot arrays
AU - Krause, Oswin
AU - Chatterjee, Anasua
AU - Kuemmeth, Ferdinand
AU - van Nieuwenburg, Evert
PY - 2022
Y1 - 2022
N2 - We introduce an algorithm that is able to find the facets of Coulomb diamonds in quantum dot arrays. We simulate these arrays using the constant-interaction model, and rely only on one-dimensional raster scans (rays) to learn a model of the device using regularized maximum likelihood estimation. This allows us to determine, for a given charge state of the device, which transitions exist and what the compensated gate voltages for these are. For smaller devices the simulator can also be used to compute the exact boundaries of the Coulomb diamonds, which we use to assess that our algorithm correctly finds the vast majority of transitions with high precision.
AB - We introduce an algorithm that is able to find the facets of Coulomb diamonds in quantum dot arrays. We simulate these arrays using the constant-interaction model, and rely only on one-dimensional raster scans (rays) to learn a model of the device using regularized maximum likelihood estimation. This allows us to determine, for a given charge state of the device, which transitions exist and what the compensated gate voltages for these are. For smaller devices the simulator can also be used to compute the exact boundaries of the Coulomb diamonds, which we use to assess that our algorithm correctly finds the vast majority of transitions with high precision.
U2 - 10.21468/SciPostPhys.13.4.084
DO - 10.21468/SciPostPhys.13.4.084
M3 - Journal article
VL - 13
JO - SciPost Physics
JF - SciPost Physics
SN - 2542-4653
IS - 4
M1 - 084
ER -
ID: 324694466