Engineering the quantum point contact response to single-electron charging in a few-electron quantum-dot circuit | Zendy

L.-X. Zhang | Zendy; JeanPierre Leburton | Zendy; Ronald Hanson | Zendy; Leo P. Kouwenhoven | Zendy

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Engineering the quantum point contact response to single-electron charging in a few-electron quantum-dot circuit

Author(s) -

L.-X. Zhang,

JeanPierre Leburton,

Ronald Hanson,

Leo P. Kouwenhoven

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1790605

Subject(s) - quantum point contact , quantum dot , electron , quantum dot laser , physics , quantum , sensitivity (control systems) , poisson's equation , condensed matter physics , quantum mechanics , quantum well , electronic engineering , engineering , laser

We show that the design of a quantum point contact adjacent to a quantum dot can be optimized to produce maximum sensitivity to single-electron charging in the quantum dot. Our analysis is based on the self-consistent solution of coupled three-dimensional Kohn-Sham and Poisson equations for the quantum circuit. We predict a detection sensitivity increase by at least 73% over the conventional design

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