Dynamically controlled charge sensing of a few-electron silicon quantum dot
Authors: C. H. Yang, W. H. Lim, F. A. Zwanenburg, A. S. Dzurak
Abstract: We report charge sensing measurements of a silicon metal-oxide-semiconductor quantum dot using a single-electron transistor as a charge sensor with dynamic feedback control. Using digitallycontrolled feedback, the sensor exhibits sensitive and robust detection of the charge state of the quantum dot, even in the presence of charge drifts and random charge rearrangements. The sensor enables the occupancy of the quantum dot to be probed down to the single electron level.
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