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A tunable few electron triple quantum dot

Source: Appl. Phys. Lett. 95, 193101 (2009); doi:10.1063/1.3258663

Published 9 November 2009

KEYWORDS and PACS
Keywords
PACS
  • 73.63.Kv
    Quantum dots (electronic transport)
  • 68.65.Hb
    Quantum dots patterned in quantum wells (structure and nonelectronic properties)
  • YEAR: 2009
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L. Gaudreau,1,2 A. Kam,1 G. Granger,1 S. A. Studenikin,1 P. Zawadzki,1 and A. S. Sachrajda1
1National Research Council, Ottawa K1A 0R6, Canada
2Department of Physics, University of Sherbrooke, Quebec J1K 2R1, Canada
In this paper, we report on a tunable few electron lateral triple quantum dot design. The quantum dot potentials are arranged in series. The device is aimed at studies of triple quantum dot properties where knowing the exact number of electrons is important as well as quantum information applications involving electron spin qubits. We demonstrate tuning strategies for achieving required resonant conditions such as quadruple points where all three quantum dots are on resonance. We find that in such a device resonant conditions at specific configurations are accompanied by complex charge transfer behavior. ©2009 American Institute of Physics
History: Received 8 July 2009; accepted 13 September 2009; published 9 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/193101/1

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