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Cassidy, M. C.; Dzurak, A. S.; Clark, R. G.; Petersson, K. D.; Farrer, I.; Ritchie, D. A.; Smith, C. G. (2009)
Languages: English
Types: Preprint
Subjects: Condensed Matter - Mesoscale and Nanoscale Physics

Classified by OpenAIRE into

arxiv: Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
We report on charge sensing measurements of a GaAs semiconductor quantum dot device using a radio frequency quantum point contact (rf-QPC). The rf-QPC is fully characterized at 4 K and milli-Kelvin temperatures and found to have a bandwidth exceeding 20 MHz. For single-shot charge sensing we achieve a charge sensitivity of 2x10^-4 e/(sqrt)Hz referred to the neighboring dot's charge. The rf-QPC compares favorably with rf-SET electrometers and promises to be an extremely useful tool for characterizing and measuring semiconductor quantum systems on fast timescales.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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