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

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • University of New South Wales
  • University of Cambridge

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli36381
Sivut1-7
JulkaisuScientific Reports
Vuosikerta6
TilaJulkaistu - 8 marraskuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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