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arXiv · 1808.04687

Measuring carbon nanotube vibrations using a single-electron transistor as a fast linear amplifier

Yutian Wen·N. Ares·T. Pei·G. A. D. Briggs·E. A. Laird
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Abstract

We demonstrate sensitive and fast electrical measurements of a carbon nanotube mechanical resonator. The nanotube is configured as a single-electron transistor, whose conductance is a sensitive transducer for its own displacement. Using an impedance-matching circuit followed by a cryogenic amplifier, the vibrations can be monitored in real time. The sensitivity of this continuous displacement measurement approaches within a factor 470 of the standard quantum limit.

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Yutian Wen, N. Ares, T. Pei, G. A. D. Briggs, E. A. Laird. 2018-10-23. Measuring carbon nanotube vibrations using a single-electron transistor as a fast linear amplifier. https://doi.org/10.1063/1.5052185

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