Küng, B. and Pfäffli, O. and Gustavsson, S. and Ihn, Thomas and Ensslin, Klaus and Reinwald, Matthias and Wegscheider, Werner
Time-resolved charge detection with cross-correlation techniques.
Physical Review B 79 (3), 035314.
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We present time-resolved charge-sensing measurements on a GaAs double quantum dot with two proximal quantum point-contact (QPC) detectors. The QPC currents are analyzed with cross-correlation techniques, which enable us to measure dot charging and discharging rates for significantly smaller signal-to-noise ratios than required for charge detection with a single QPC. This allows us to reduce the ...
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