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arXiv · 1603.02274

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

T. A. Baart·P. T. Eendebak·C. Reichl·W. Wegscheider·L. M. K. Vandersypen
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Abstract

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.

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T. A. Baart, P. T. Eendebak, C. Reichl, W. Wegscheider, L. M. K. Vandersypen. 2016-03-07. Computer-automated tuning of semiconductor double quantum dots into the single-electron regime. https://doi.org/10.1063/1.4952624

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