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Direct measurement of the maximum tunnel rate in a radio frequency single electron transistor operated as a microwave mixer

D. J. Reilly·T. M. Buehler
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Abstract

By operating the radio frequency single electron transistor (rf-SET) as a mixer we present measurements in which the RC roll-off of the tunnel junctions is observed at high frequencies. Our technique makes use of the non-linear rf-SET transconductance to mix high frequency gate signals and produce difference-frequency components that fall within the bandwidth of the rf-SET. At gate frequencies >15GHz the induced charge on the rf-SET island is altered on time-scales faster than the inverse tunnel rate, preventing mixer operation. We suggest the possibility of utilizing this technique to sense high frequency signals beyond the usual rf-SET bandwidth.

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D. J. Reilly, T. M. Buehler. 2004-12-15. Direct measurement of the maximum tunnel rate in a radio frequency single electron transistor operated as a microwave mixer. https://doi.org/10.1063/1.2093929

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