@article{7d8277ce29ef4be49ee6e9a1922b2e3b,
title = "Computer-automated tuning procedures for semiconductor quantum dot arrays",
abstract = "As with any quantum computing platform, semiconductor quantum dot devices require sophisticated hardware and controls for operation. The increasing complexity of quantum dot devices necessitates the advancement of automated control software and image recognition techniques for rapidly evaluating charge stability diagrams. We use an image analysis toolbox developed in Python to automate the calibration of virtual gates, a process that previously involved a large amount of user intervention. Moreover, we show that straightforward feedback protocols can be used to simultaneously tune multiple tunnel couplings in a triple quantum dot in a computer automated fashion. Finally, we adopt the use of a {"}tunnel coupling lever arm{"} to model the interdot barrier gate response and discuss how it can be used to more rapidly tune interdot tunnel couplings to the gigahertz values that are compatible with exchange gates.",
author = "Mills, {A. R.} and Feldman, {M. M.} and C. Monical and Lewis, {P. J.} and Larson, {K. W.} and Mounce, {A. M.} and Petta, {J. R.}",
note = "Funding Information: We thank Lisa Edge for providing the heterostructure used in these experiments and David Zajac for fabricating the device. This work was funded by Army Research Office Grant No. W911NF-15-1-0149 and the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF4535. Devices were fabricated in the Princeton University Quantum Device Nanofabrication Laboratory. The Sandia National Laboratory portion of this work was funded by the Sandia National Laboratory LDRD program and at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under Contract No. DE-NA0003525. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in this paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Funding Information: We thank Lisa Edge for providing the heterostructure used in these experiments and David Zajac for fabricating the device. This work was funded by Army Research Office Grant No. W911NF-15-1-0149 and the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF4535. Devices were fabricated in the Princeton University Quantum Device Nanofabrication Laboratory. The Sandia National Laboratory portion of this work was funded by the Sandia National Laboratory LDRD program and at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under Contract No. DE-NA0003525. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in this paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Publisher Copyright: {\textcopyright} 2019 Author(s).",
year = "2019",
month = sep,
day = "9",
doi = "10.1063/1.5121444",
language = "English (US)",
volume = "115",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "11",
}