Controlled resonant tunneling in a coupled double-quantum-dot system

Gou Shinkai, Toshiaki Hayashi, Yoshiro Hirayama, Toshimasa Fujisawa

研究成果: Article

30 引用 (Scopus)

抜粋

The authors investigate electrostatic coupling between two double quantum dots (DQDs) defined in an AlGaAsGaAs heterostructure by measuring the correlation between resonant tunneling currents through the DQDs. Resonant tunneling in one DQD can be controlled by the charge state of the other DQD. This controlled resonant tunneling is consistent with the capacitance model for the geometry and can be used to investigate the statistics of single-electron charge states in the DQD. The observed electrostatic coupling is strong enough to perform two-qubit quantum gates both for charge- and electron-spin-based qubit schemes.

元の言語English
記事番号103116
ジャーナルApplied Physics Letters
90
発行部数10
DOI
出版物ステータスPublished - 2007 3 16

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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