The finite frequency voltage fluctuations of single electron transistor (SET) island biased in the transport mode were evaluated. An expression was derived for the voltage noise of a SET valid in the entire frequency range from low frequency classical shot noise to high frequency quantum noise. The expression was used to analyze the back-action of the SET on the single-Cooper-pair box (SCB). Single-shot readout of a SCB qubit using radio-frequency single electron transistor (RFSET) was found to be possible using the information about back-action.
|Number of pages||4|
|Journal||Physical Review Letters|
|State||Published - 28 Jan 2002|