Three-waveform bidirectional pumping of single electrons with a silicon quantum dot

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Tanttu, Tuomo and Rossi, Alessandro and Tan, Kuan Yen and Mäkinen, Akseli and Chan, Kok Wai and Dzurak, Andrew S. and Möttönen, Mikko (2016) Three-waveform bidirectional pumping of single electrons with a silicon quantum dot. Scientific Reports, 6. 36381. ISSN 2045-2322 (https://doi.org/10.1038/srep36381)

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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.

ORCID iDs

Tanttu, Tuomo, Rossi, Alessandro ORCID logoORCID: https://orcid.org/0000-0001-7935-7560, Tan, Kuan Yen, Mäkinen, Akseli, Chan, Kok Wai, Dzurak, Andrew S. and Möttönen, Mikko;
  • Item type:Article
    ID code:68652
    Dates:
    Date
    Event
    8 November 2016
    Published
    12 October 2016
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:28 Jun 2019 14:55
    Last modified:11 Nov 2024 12:20
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/68652
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