Three-waveform bidirectional pumping of single electrons with a silicon quantum dot
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Scientific Reports, Volume 6, pp. 1-7
Abstract
Semiconductor-based quantum dot single-electron pumps are currently the most promising candidates for the direct realization of the emerging quantum standard of the ampere in the International System of Units. Here, we discuss a silicon quantum dot single-electron pump with radio frequency control over the transparencies of entrance and exit barriers as well as the dot potential. We show that our driving protocol leads to robust bidirectional pumping: one can conveniently reverse the direction of the quantized current by changing only the phase shift of one driving waveform with respect to the others. We anticipate that this pumping technique may be used in the future to perform error counting experiments by pumping the electrons into and out of a reservoir island monitored by a charge sensor.Description
Keywords
Other note
Citation
Tanttu, T, Rossi, A, Tan, K Y, Mäkinen, A, Chan, K W, Dzurak, A S & Möttönen, M 2016, 'Three-waveform bidirectional pumping of single electrons with a silicon quantum dot', Scientific Reports, vol. 6, 36381, pp. 1-7. https://doi.org/10.1038/srep36381