Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2767197
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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. (c) 2007 American Institute of Physics.
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