Wen, Yutian and Ares, N and Pei, T and Briggs, Andrew and Laird, Edward Alexander (2018) Measuring carbon nanotube vibrations using a single-electron transistor as a fast linear amplifier. Applied Physics Letters, 113 (15): 153101. ISSN 0003-6951
pdf_archiveAPPLABvol_113iss_15153101_1_am.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.
Download (4MB)
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 at radio frequency. The sensitivity of this continuous displacement measurement approaches within a factor 470 of the standard quantum limit.