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Single electron pumping in InAs nanowire double quantum dots

Publiceringsår: 2007
Språk: Engelska
Sidor: 052109-1-052109-3
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 91
Nummer: 5
Dokumenttyp: Artikel
Förlag: American Institute of Physics


Closely spaced local gate electrodes are used to electrically define a double quantum dot along an InAs nanowire crystal. By applying a periodic pulse sequence to two plunger gate electrodes controlling the double quantum dot charge configuration, the device is operated as a single electron pump. The authors find that within measurement accuracy, the pumping current equals one electron per cycle for frequencies up to 2 MHz, demonstrating the suitability of nanowire based quantum dots for pumping applications.



  • Condensed Matter Physics



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