Charge sensitivity of the inductive single-electron transistor
Charge sensitivity of the inductive single-electron transistor
We calculate the charge sensitivity of a recently demonstrated device where the Josephson inductance of a single Cooper-pair transistor is measured. We find that the intrinsic limit to detector performance is set by oscillator quantum noise. Sensitivity better than 10−6e∕Hz is possible with a high Q value ∼103, or using …