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19 April 2024 |
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The radio-frequency single-electron transistor (RF-SET): A fast and ultrasensitive electrometer | | R J Schoelkopf
; P Wahlgren
; A A Kozhevnikov
; P Delsing
; D E Prober
; | | Date: |
22 May 1998 | | Journal: | Science, 280 (5367), 1238-42 | | Abstract: | A new type of electrometer is described that uses a single-electron transistor (SET) and that allows large operating speeds and extremely high charge sensitivity. The SET readout was accomplished by measuring the damping of a 1.7-gigahertz resonant circuit in which the device is embedded, and in some ways is the electrostatic "dual" of the well-known radio-frequency superconducting quantum interference device. The device is more than two orders of magnitude faster than previous single-electron devices, with a constant gain from dc to greater than 100 megahertz. For a still-unoptimized device, a charge sensitivity of 1.2 x 10(-5) e/hertz was obtained at a frequency of 1.1 megahertz, which is about an order of magnitude better than a typical, 1/f-noise-limited SET, and corresponds to an energy sensitivity (in joules per hertz) of about 41 Planck’s over 2pi. | | Source: | PubMed, pmid9596572 | | Services: | Forum | Review | Favorites | |
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