Sillanpää, Mika A. & Roschier, Leif & Hakonen, Pertti J. 2005. Charge sensitivity of the inductive single-electron transistor. Applied Physics Letters. Volume 87, Issue 9. 092502/1-3. ISSN 0003-6951 (printed). DOI: 10.1063/1.2034096.
Abstract:
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 oscillatorquantum noise. Sensitivity better than 10−6e/√Hz is possible with a high Q value ∼103, or using a superconducting quantum interference deviceamplifier. The model is compared to experiment, where charge sensitivity 3×10−5e/√Hz and bandwidth 100 MHz are achieved.
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