Computer-automated tuning of semiconductor double quantum dots into the single-electron regime

Journal Article · Mon May 23 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4952624· OSTI ID:22590463

Baart, T. A.; Vandersypen, L. M. K. ^[1]; Eendebak, P. T. ^[1]; Reichl, C.; Wegscheider, W. ^[2]

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1. QuTech, Delft University of Technology, P.O. Box 5046, 2600 GA Delft (Netherlands)
2. Solid State Physics Laboratory, ETH Zürich, 8093 Zürich (Switzerland)

We report the computer-automated tuning of gate-defined semiconductor double quantum dots in GaAs heterostructures. We benchmark the algorithm by creating three double quantum dots inside a linear array of four quantum dots. The algorithm sets the correct gate voltages for all the gates to tune the double quantum dots into the single-electron regime. The algorithm only requires (1) prior knowledge of the gate design and (2) the pinch-off value of the single gate T that is shared by all the quantum dots. This work significantly alleviates the user effort required to tune multiple quantum dot devices.

• OSTI ID: 22590463
• Journal Information: Applied Physics Letters, Vol. 108, Issue 21; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
BENCHMARKS
COMPUTERS
ECONOMICS
ELECTRIC POTENTIAL
EQUIPMENT
GALLIUM ARSENIDES
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
TUNING