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Mixing with the radiofrequency single-electron transistor

L. J. Swenson·D. R. Schmidt·J. S. Aldridge·D. K. Wood·A. N. Cleland
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Abstract

By configuring a radio-frequency single-electron transistor as a mixer, we demonstrate a unique implementation of this device, that achieves good charge sensitivity with large bandwidth about a tunable center frequency. In our implementation we achieve a measurement bandwidth of 16 MHz, with a tunable center frequency from 0 to 1.2 GHz, demonstrated with the transistor operating at 300 mK. Ultimately this device is limited in center frequency by the RC time of the transistor's center island, which for our device is ~ 1.6 GHz, close to the measured value. The measurement bandwidth is determined by the quality factor of the readout tank circuit.

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L. J. Swenson, D. R. Schmidt, J. S. Aldridge, D. K. Wood, A. N. Cleland. 2005-01-26. Mixing with the radiofrequency single-electron transistor. https://doi.org/10.1063/1.1923188

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